/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-rb-sentinel-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 08:59:01,346 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 08:59:01,350 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 08:59:01,376 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 08:59:01,377 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 08:59:01,378 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 08:59:01,380 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 08:59:01,381 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 08:59:01,384 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 08:59:01,385 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 08:59:01,387 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 08:59:01,389 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 08:59:01,389 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 08:59:01,390 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 08:59:01,392 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 08:59:01,393 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 08:59:01,394 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 08:59:01,395 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 08:59:01,397 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 08:59:01,399 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 08:59:01,401 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 08:59:01,402 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 08:59:01,404 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 08:59:01,405 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 08:59:01,410 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 08:59:01,411 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 08:59:01,411 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 08:59:01,415 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 08:59:01,415 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 08:59:01,416 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 08:59:01,419 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 08:59:01,420 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 08:59:01,421 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 08:59:01,422 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 08:59:01,424 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 08:59:01,424 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 08:59:01,425 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 08:59:01,425 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 08:59:01,426 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 08:59:01,434 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 08:59:01,435 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 08:59:01,439 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 08:59:01,486 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 08:59:01,487 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 08:59:01,490 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 08:59:01,490 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 08:59:01,490 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 08:59:01,491 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 08:59:01,491 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 08:59:01,491 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 08:59:01,491 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 08:59:01,492 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 08:59:01,493 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 08:59:01,493 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 08:59:01,493 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 08:59:01,494 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 08:59:01,494 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 08:59:01,494 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 08:59:01,494 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 08:59:01,495 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 08:59:01,495 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 08:59:01,495 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 08:59:01,495 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 08:59:01,495 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:59:01,496 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 08:59:01,496 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 08:59:01,496 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 08:59:01,496 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 08:59:01,497 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 08:59:01,497 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 08:59:01,497 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 08:59:01,498 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-09-25 08:59:02,038 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 08:59:02,062 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 08:59:02,068 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 08:59:02,070 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 08:59:02,070 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 08:59:02,072 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-rb-sentinel-1.i [2020-09-25 08:59:02,153 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/58cb42502/0fc05a2981574730a87007d10717550d/FLAG0058324cf [2020-09-25 08:59:02,787 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 08:59:02,789 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/dll-rb-sentinel-1.i [2020-09-25 08:59:02,812 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/58cb42502/0fc05a2981574730a87007d10717550d/FLAG0058324cf [2020-09-25 08:59:02,993 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/58cb42502/0fc05a2981574730a87007d10717550d [2020-09-25 08:59:03,005 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 08:59:03,010 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 08:59:03,011 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 08:59:03,011 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 08:59:03,016 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 08:59:03,017 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:59:02" (1/1) ... [2020-09-25 08:59:03,021 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59c286c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:03, skipping insertion in model container [2020-09-25 08:59:03,022 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:59:02" (1/1) ... [2020-09-25 08:59:03,031 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 08:59:03,096 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 08:59:03,650 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:59:03,666 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 08:59:03,713 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:59:03,774 INFO L208 MainTranslator]: Completed translation [2020-09-25 08:59:03,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:03 WrapperNode [2020-09-25 08:59:03,776 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 08:59:03,777 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 08:59:03,777 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 08:59:03,777 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 08:59:03,792 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:03" (1/1) ... [2020-09-25 08:59:03,792 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:03" (1/1) ... [2020-09-25 08:59:03,811 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:03" (1/1) ... [2020-09-25 08:59:03,812 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:03" (1/1) ... [2020-09-25 08:59:03,832 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:03" (1/1) ... [2020-09-25 08:59:03,841 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:03" (1/1) ... [2020-09-25 08:59:03,844 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:03" (1/1) ... [2020-09-25 08:59:03,857 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 08:59:03,857 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 08:59:03,858 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 08:59:03,858 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 08:59:03,862 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:03" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:59:03,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 08:59:03,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 08:59:03,937 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 08:59:03,938 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-25 08:59:03,938 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-25 08:59:03,938 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-25 08:59:03,938 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-25 08:59:03,938 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-25 08:59:03,938 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-25 08:59:03,939 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-25 08:59:03,939 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-25 08:59:03,939 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-25 08:59:03,939 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-25 08:59:03,939 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-25 08:59:03,940 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-25 08:59:03,940 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-25 08:59:03,940 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-25 08:59:03,940 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-25 08:59:03,940 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-25 08:59:03,941 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-25 08:59:03,941 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-25 08:59:03,941 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-25 08:59:03,941 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-25 08:59:03,941 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-25 08:59:03,942 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-25 08:59:03,942 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-25 08:59:03,942 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-25 08:59:03,942 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-25 08:59:03,942 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-25 08:59:03,942 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-25 08:59:03,943 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-25 08:59:03,943 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-25 08:59:03,943 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-25 08:59:03,943 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-25 08:59:03,943 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-25 08:59:03,943 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-25 08:59:03,944 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-25 08:59:03,944 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-25 08:59:03,944 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-25 08:59:03,944 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-25 08:59:03,944 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-25 08:59:03,944 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-25 08:59:03,945 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-25 08:59:03,945 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-25 08:59:03,945 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-25 08:59:03,945 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-25 08:59:03,945 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-25 08:59:03,946 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-25 08:59:03,946 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-25 08:59:03,946 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-25 08:59:03,946 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-25 08:59:03,946 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-25 08:59:03,946 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-25 08:59:03,947 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 08:59:03,947 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-25 08:59:03,947 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-25 08:59:03,947 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-25 08:59:03,947 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-25 08:59:03,947 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-25 08:59:03,948 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-25 08:59:03,948 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-25 08:59:03,948 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-25 08:59:03,948 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 08:59:03,948 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-25 08:59:03,948 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-25 08:59:03,949 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-25 08:59:03,949 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 08:59:03,949 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-25 08:59:03,949 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-25 08:59:03,949 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-25 08:59:03,949 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-25 08:59:03,949 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-25 08:59:03,950 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-25 08:59:03,950 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-25 08:59:03,950 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-25 08:59:03,950 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-25 08:59:03,950 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-25 08:59:03,950 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-25 08:59:03,951 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-25 08:59:03,951 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-25 08:59:03,951 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-25 08:59:03,951 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-25 08:59:03,951 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-25 08:59:03,951 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-25 08:59:03,952 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-25 08:59:03,952 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-25 08:59:03,952 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-25 08:59:03,952 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-25 08:59:03,952 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-25 08:59:03,952 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-25 08:59:03,953 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-25 08:59:03,953 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-25 08:59:03,953 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-25 08:59:03,953 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-25 08:59:03,953 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-25 08:59:03,953 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-25 08:59:03,953 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-25 08:59:03,954 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-25 08:59:03,954 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-25 08:59:03,954 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-25 08:59:03,954 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-25 08:59:03,954 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-25 08:59:03,954 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-25 08:59:03,954 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-25 08:59:03,955 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-25 08:59:03,955 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-25 08:59:03,955 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 08:59:03,955 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 08:59:03,955 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 08:59:03,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 08:59:03,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 08:59:03,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 08:59:03,956 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 08:59:03,956 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 08:59:03,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 08:59:03,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 08:59:03,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 08:59:04,690 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 08:59:04,690 INFO L295 CfgBuilder]: Removed 17 assume(true) statements. [2020-09-25 08:59:04,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:59:04 BoogieIcfgContainer [2020-09-25 08:59:04,696 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 08:59:04,697 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 08:59:04,698 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 08:59:04,702 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 08:59:04,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 08:59:02" (1/3) ... [2020-09-25 08:59:04,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12e823f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:59:04, skipping insertion in model container [2020-09-25 08:59:04,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:59:03" (2/3) ... [2020-09-25 08:59:04,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12e823f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:59:04, skipping insertion in model container [2020-09-25 08:59:04,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:59:04" (3/3) ... [2020-09-25 08:59:04,707 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-rb-sentinel-1.i [2020-09-25 08:59:04,720 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 08:59:04,731 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-09-25 08:59:04,755 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-09-25 08:59:04,785 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 08:59:04,785 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 08:59:04,785 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 08:59:04,785 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 08:59:04,785 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 08:59:04,785 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 08:59:04,785 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 08:59:04,786 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 08:59:04,812 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states. [2020-09-25 08:59:04,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-25 08:59:04,819 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:59:04,821 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] [2020-09-25 08:59:04,821 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:59:04,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:59:04,828 INFO L82 PathProgramCache]: Analyzing trace with hash 1523709425, now seen corresponding path program 1 times [2020-09-25 08:59:04,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:59:04,839 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [992278930] [2020-09-25 08:59:04,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:59:05,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:05,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:05,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:05,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:05,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 08:59:05,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:59:05,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 753 [2020-09-25 08:59:05,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:05,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:05,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:05,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 08:59:05,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:05,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 08:59:05,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:59:05,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:05,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:05,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:05,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:59:05,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:05,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 08:59:05,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:05,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:05,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:05,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:05,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:05,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:05,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:59:05,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [992278930] [2020-09-25 08:59:05,886 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:59:05,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 08:59:05,888 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055464808] [2020-09-25 08:59:05,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 08:59:05,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:59:05,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 08:59:05,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:59:05,920 INFO L87 Difference]: Start difference. First operand 123 states. Second operand 3 states. [2020-09-25 08:59:06,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:59:06,274 INFO L93 Difference]: Finished difference Result 228 states and 286 transitions. [2020-09-25 08:59:06,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 08:59:06,276 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-09-25 08:59:06,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:59:06,290 INFO L225 Difference]: With dead ends: 228 [2020-09-25 08:59:06,290 INFO L226 Difference]: Without dead ends: 100 [2020-09-25 08:59:06,296 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 08:59:06,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-09-25 08:59:06,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2020-09-25 08:59:06,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-09-25 08:59:06,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 103 transitions. [2020-09-25 08:59:06,351 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 103 transitions. Word has length 23 [2020-09-25 08:59:06,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:59:06,352 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 103 transitions. [2020-09-25 08:59:06,352 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 08:59:06,352 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 103 transitions. [2020-09-25 08:59:06,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-25 08:59:06,353 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:59:06,353 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] [2020-09-25 08:59:06,354 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 08:59:06,354 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:59:06,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:59:06,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1887154194, now seen corresponding path program 1 times [2020-09-25 08:59:06,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:59:06,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [646856039] [2020-09-25 08:59:06,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:59:06,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:06,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:06,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:06,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 08:59:06,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:06,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-09-25 08:59:06,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:06,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:06,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:59:06,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 08:59:06,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 08:59:06,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:06,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:59:06,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:06,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:06,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:06,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:59:06,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:06,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 08:59:06,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:06,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:06,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:06,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:06,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:06,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:06,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:59:06,780 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [646856039] [2020-09-25 08:59:06,781 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:59:06,781 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 08:59:06,781 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135069852] [2020-09-25 08:59:06,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 08:59:06,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:59:06,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 08:59:06,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 08:59:06,785 INFO L87 Difference]: Start difference. First operand 100 states and 103 transitions. Second operand 8 states. [2020-09-25 08:59:07,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:59:07,156 INFO L93 Difference]: Finished difference Result 121 states and 126 transitions. [2020-09-25 08:59:07,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 08:59:07,156 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-09-25 08:59:07,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:59:07,158 INFO L225 Difference]: With dead ends: 121 [2020-09-25 08:59:07,158 INFO L226 Difference]: Without dead ends: 119 [2020-09-25 08:59:07,160 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-09-25 08:59:07,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-09-25 08:59:07,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 98. [2020-09-25 08:59:07,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-09-25 08:59:07,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 101 transitions. [2020-09-25 08:59:07,172 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 101 transitions. Word has length 25 [2020-09-25 08:59:07,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:59:07,172 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 101 transitions. [2020-09-25 08:59:07,172 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 08:59:07,173 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 101 transitions. [2020-09-25 08:59:07,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-25 08:59:07,174 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:59:07,174 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] [2020-09-25 08:59:07,174 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 08:59:07,175 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:59:07,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:59:07,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1939387545, now seen corresponding path program 1 times [2020-09-25 08:59:07,175 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:59:07,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1047780250] [2020-09-25 08:59:07,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:59:07,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:07,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:07,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:07,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 08:59:07,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:07,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-09-25 08:59:07,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:07,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:07,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:59:07,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 08:59:07,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 08:59:07,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:07,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:59:07,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:07,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:07,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:07,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:59:07,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:07,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:59:07,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:07,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:07,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:07,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:07,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:07,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:07,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:59:07,428 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1047780250] [2020-09-25 08:59:07,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:59:07,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 08:59:07,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265953479] [2020-09-25 08:59:07,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 08:59:07,430 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:59:07,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 08:59:07,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 08:59:07,431 INFO L87 Difference]: Start difference. First operand 98 states and 101 transitions. Second operand 6 states. [2020-09-25 08:59:07,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:59:07,783 INFO L93 Difference]: Finished difference Result 146 states and 152 transitions. [2020-09-25 08:59:07,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 08:59:07,783 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-09-25 08:59:07,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:59:07,785 INFO L225 Difference]: With dead ends: 146 [2020-09-25 08:59:07,785 INFO L226 Difference]: Without dead ends: 143 [2020-09-25 08:59:07,786 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 08:59:07,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-09-25 08:59:07,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 107. [2020-09-25 08:59:07,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-09-25 08:59:07,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 111 transitions. [2020-09-25 08:59:07,801 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 111 transitions. Word has length 29 [2020-09-25 08:59:07,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:59:07,801 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 111 transitions. [2020-09-25 08:59:07,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 08:59:07,801 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 111 transitions. [2020-09-25 08:59:07,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 08:59:07,803 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:59:07,803 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:59:07,804 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 08:59:07,804 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:59:07,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:59:07,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1026590761, now seen corresponding path program 1 times [2020-09-25 08:59:07,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:59:07,805 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1175117780] [2020-09-25 08:59:07,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:59:07,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:07,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:07,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:08,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:08,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 08:59:08,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:59:08,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 618 [2020-09-25 08:59:08,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:08,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:08,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:59:08,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-09-25 08:59:08,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 08:59:08,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:08,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:59:08,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:08,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:08,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:08,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:59:08,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:08,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:59:08,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:08,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:08,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:08,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:08,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:08,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:08,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:59:08,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1175117780] [2020-09-25 08:59:08,586 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:59:08,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 08:59:08,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618198857] [2020-09-25 08:59:08,587 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 08:59:08,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:59:08,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 08:59:08,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 08:59:08,588 INFO L87 Difference]: Start difference. First operand 107 states and 111 transitions. Second operand 6 states. [2020-09-25 08:59:08,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:59:08,845 INFO L93 Difference]: Finished difference Result 162 states and 169 transitions. [2020-09-25 08:59:08,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 08:59:08,846 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-09-25 08:59:08,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:59:08,848 INFO L225 Difference]: With dead ends: 162 [2020-09-25 08:59:08,848 INFO L226 Difference]: Without dead ends: 140 [2020-09-25 08:59:08,849 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-25 08:59:08,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-09-25 08:59:08,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 112. [2020-09-25 08:59:08,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-09-25 08:59:08,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 116 transitions. [2020-09-25 08:59:08,859 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 116 transitions. Word has length 38 [2020-09-25 08:59:08,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:59:08,860 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 116 transitions. [2020-09-25 08:59:08,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 08:59:08,860 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 116 transitions. [2020-09-25 08:59:08,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-25 08:59:08,862 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:59:08,862 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:59:08,862 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 08:59:08,863 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:59:08,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:59:08,863 INFO L82 PathProgramCache]: Analyzing trace with hash 1637573847, now seen corresponding path program 1 times [2020-09-25 08:59:08,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:59:08,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1360116848] [2020-09-25 08:59:08,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:59:08,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:08,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:09,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:09,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 08:59:09,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:09,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-09-25 08:59:09,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:09,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:09,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:59:09,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 08:59:09,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 08:59:09,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:09,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:59:09,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:09,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:09,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:09,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:59:09,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:09,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:59:09,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:09,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:09,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:09,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:09,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:09,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:09,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:59:09,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1360116848] [2020-09-25 08:59:09,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:59:09,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 08:59:09,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410351038] [2020-09-25 08:59:09,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 08:59:09,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:59:09,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 08:59:09,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:59:09,168 INFO L87 Difference]: Start difference. First operand 112 states and 116 transitions. Second operand 5 states. [2020-09-25 08:59:09,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:59:09,362 INFO L93 Difference]: Finished difference Result 117 states and 121 transitions. [2020-09-25 08:59:09,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:59:09,362 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2020-09-25 08:59:09,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:59:09,364 INFO L225 Difference]: With dead ends: 117 [2020-09-25 08:59:09,364 INFO L226 Difference]: Without dead ends: 114 [2020-09-25 08:59:09,365 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 08:59:09,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-09-25 08:59:09,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 109. [2020-09-25 08:59:09,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-09-25 08:59:09,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 113 transitions. [2020-09-25 08:59:09,374 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 113 transitions. Word has length 38 [2020-09-25 08:59:09,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:59:09,374 INFO L479 AbstractCegarLoop]: Abstraction has 109 states and 113 transitions. [2020-09-25 08:59:09,374 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 08:59:09,374 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 113 transitions. [2020-09-25 08:59:09,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-25 08:59:09,376 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:59:09,376 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] [2020-09-25 08:59:09,376 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 08:59:09,377 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:59:09,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:59:09,377 INFO L82 PathProgramCache]: Analyzing trace with hash -1162057661, now seen corresponding path program 1 times [2020-09-25 08:59:09,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:59:09,378 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2123847119] [2020-09-25 08:59:09,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:59:09,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:09,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:09,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:09,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 08:59:09,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:09,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-09-25 08:59:09,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:09,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:09,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:59:09,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-09-25 08:59:09,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 08:59:09,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:59:09,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:59:09,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:09,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:09,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:09,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:59:09,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:09,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:59:09,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:09,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:09,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:09,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:09,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:09,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:09,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:59:09,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2123847119] [2020-09-25 08:59:09,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:59:09,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 08:59:09,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341319506] [2020-09-25 08:59:09,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 08:59:09,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:59:09,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 08:59:09,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:59:09,737 INFO L87 Difference]: Start difference. First operand 109 states and 113 transitions. Second operand 5 states. [2020-09-25 08:59:09,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:59:09,940 INFO L93 Difference]: Finished difference Result 112 states and 116 transitions. [2020-09-25 08:59:09,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 08:59:09,941 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2020-09-25 08:59:09,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:59:09,942 INFO L225 Difference]: With dead ends: 112 [2020-09-25 08:59:09,942 INFO L226 Difference]: Without dead ends: 109 [2020-09-25 08:59:09,943 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 08:59:09,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-09-25 08:59:09,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 106. [2020-09-25 08:59:09,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-09-25 08:59:09,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 110 transitions. [2020-09-25 08:59:09,951 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 110 transitions. Word has length 42 [2020-09-25 08:59:09,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:59:09,951 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 110 transitions. [2020-09-25 08:59:09,951 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 08:59:09,952 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 110 transitions. [2020-09-25 08:59:09,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-25 08:59:09,953 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:59:09,953 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] [2020-09-25 08:59:09,953 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 08:59:09,954 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:59:09,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:59:09,954 INFO L82 PathProgramCache]: Analyzing trace with hash -41137780, now seen corresponding path program 1 times [2020-09-25 08:59:09,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:59:09,955 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1412594471] [2020-09-25 08:59:09,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:59:09,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:10,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:10,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:11,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:11,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 08:59:11,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:59:11,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1727 [2020-09-25 08:59:11,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:11,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:11,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 08:59:11,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 08:59:11,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 08:59:11,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:11,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:59:11,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:11,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:11,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:11,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:59:11,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:11,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 08:59:11,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:11,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:11,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:11,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:11,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:11,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:11,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:59:11,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1412594471] [2020-09-25 08:59:11,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:59:11,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-25 08:59:11,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142153054] [2020-09-25 08:59:11,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 08:59:11,883 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:59:11,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 08:59:11,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-09-25 08:59:11,884 INFO L87 Difference]: Start difference. First operand 106 states and 110 transitions. Second operand 13 states. [2020-09-25 08:59:12,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:59:12,481 INFO L93 Difference]: Finished difference Result 156 states and 163 transitions. [2020-09-25 08:59:12,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 08:59:12,482 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 44 [2020-09-25 08:59:12,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:59:12,483 INFO L225 Difference]: With dead ends: 156 [2020-09-25 08:59:12,483 INFO L226 Difference]: Without dead ends: 154 [2020-09-25 08:59:12,486 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=298, Unknown=0, NotChecked=0, Total=420 [2020-09-25 08:59:12,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-09-25 08:59:12,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 132. [2020-09-25 08:59:12,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-09-25 08:59:12,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 138 transitions. [2020-09-25 08:59:12,497 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 138 transitions. Word has length 44 [2020-09-25 08:59:12,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:59:12,498 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 138 transitions. [2020-09-25 08:59:12,498 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 08:59:12,498 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 138 transitions. [2020-09-25 08:59:12,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-25 08:59:12,499 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:59:12,499 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 08:59:12,499 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 08:59:12,499 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:59:12,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:59:12,500 INFO L82 PathProgramCache]: Analyzing trace with hash 784866741, now seen corresponding path program 1 times [2020-09-25 08:59:12,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:59:12,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1350359612] [2020-09-25 08:59:12,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:59:12,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:12,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:12,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:12,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:14,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:15,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:16,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:17,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:17,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:17,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:17,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-25 08:59:17,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 08:59:17,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5115 [2020-09-25 08:59:17,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:17,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:17,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 08:59:17,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-09-25 08:59:17,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 08:59:17,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:59:18,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:59:18,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:18,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:18,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:18,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:59:18,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:18,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 08:59:18,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:18,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:18,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:18,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:18,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:18,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:18,069 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:59:18,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1350359612] [2020-09-25 08:59:18,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:59:18,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 08:59:18,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587802249] [2020-09-25 08:59:18,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 08:59:18,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:59:18,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 08:59:18,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2020-09-25 08:59:18,073 INFO L87 Difference]: Start difference. First operand 132 states and 138 transitions. Second operand 15 states. [2020-09-25 08:59:19,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:59:19,170 INFO L93 Difference]: Finished difference Result 191 states and 200 transitions. [2020-09-25 08:59:19,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 08:59:19,171 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 45 [2020-09-25 08:59:19,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:59:19,173 INFO L225 Difference]: With dead ends: 191 [2020-09-25 08:59:19,173 INFO L226 Difference]: Without dead ends: 169 [2020-09-25 08:59:19,174 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=226, Invalid=644, Unknown=0, NotChecked=0, Total=870 [2020-09-25 08:59:19,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-09-25 08:59:19,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 139. [2020-09-25 08:59:19,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-09-25 08:59:19,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 145 transitions. [2020-09-25 08:59:19,182 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 145 transitions. Word has length 45 [2020-09-25 08:59:19,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:59:19,183 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 145 transitions. [2020-09-25 08:59:19,183 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 08:59:19,183 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 145 transitions. [2020-09-25 08:59:19,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 08:59:19,184 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:59:19,184 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-09-25 08:59:19,185 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 08:59:19,185 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:59:19,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:59:19,185 INFO L82 PathProgramCache]: Analyzing trace with hash 1939042985, now seen corresponding path program 2 times [2020-09-25 08:59:19,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:59:19,186 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1045996271] [2020-09-25 08:59:19,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:59:19,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:19,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:19,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:19,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 08:59:19,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:19,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-09-25 08:59:19,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:19,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:19,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:59:19,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 08:59:19,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 08:59:19,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:59:19,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:59:19,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:19,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:19,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:19,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:59:19,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:19,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:59:19,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:19,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:19,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:19,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:19,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:19,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:19,568 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 08:59:19,573 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1045996271] [2020-09-25 08:59:19,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:59:19,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 08:59:19,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167822304] [2020-09-25 08:59:19,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 08:59:19,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:59:19,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 08:59:19,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 08:59:19,575 INFO L87 Difference]: Start difference. First operand 139 states and 145 transitions. Second operand 7 states. [2020-09-25 08:59:19,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:59:19,997 INFO L93 Difference]: Finished difference Result 164 states and 171 transitions. [2020-09-25 08:59:19,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 08:59:19,998 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-09-25 08:59:19,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:59:19,999 INFO L225 Difference]: With dead ends: 164 [2020-09-25 08:59:19,999 INFO L226 Difference]: Without dead ends: 123 [2020-09-25 08:59:20,000 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-09-25 08:59:20,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-09-25 08:59:20,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 120. [2020-09-25 08:59:20,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-09-25 08:59:20,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 125 transitions. [2020-09-25 08:59:20,006 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 125 transitions. Word has length 52 [2020-09-25 08:59:20,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:59:20,007 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 125 transitions. [2020-09-25 08:59:20,007 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 08:59:20,007 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 125 transitions. [2020-09-25 08:59:20,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 08:59:20,011 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:59:20,011 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] [2020-09-25 08:59:20,011 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 08:59:20,011 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:59:20,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:59:20,012 INFO L82 PathProgramCache]: Analyzing trace with hash 1051665877, now seen corresponding path program 1 times [2020-09-25 08:59:20,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:59:20,012 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [549709112] [2020-09-25 08:59:20,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:59:20,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:20,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:20,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:20,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:24,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:24,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 08:59:24,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 08:59:24,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4095 [2020-09-25 08:59:24,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:24,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:24,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 08:59:24,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 08:59:24,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 08:59:24,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:24,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:59:24,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:24,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:24,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:24,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:59:24,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:24,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:59:24,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:24,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:24,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:24,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:24,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:24,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:24,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:59:24,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [549709112] [2020-09-25 08:59:24,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:59:24,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-09-25 08:59:24,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655439539] [2020-09-25 08:59:24,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 08:59:24,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:59:24,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 08:59:24,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2020-09-25 08:59:24,479 INFO L87 Difference]: Start difference. First operand 120 states and 125 transitions. Second operand 17 states. [2020-09-25 08:59:25,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:59:25,542 INFO L93 Difference]: Finished difference Result 136 states and 142 transitions. [2020-09-25 08:59:25,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 08:59:25,544 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 54 [2020-09-25 08:59:25,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:59:25,545 INFO L225 Difference]: With dead ends: 136 [2020-09-25 08:59:25,546 INFO L226 Difference]: Without dead ends: 134 [2020-09-25 08:59:25,547 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=267, Invalid=663, Unknown=0, NotChecked=0, Total=930 [2020-09-25 08:59:25,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-09-25 08:59:25,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 92. [2020-09-25 08:59:25,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-09-25 08:59:25,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 95 transitions. [2020-09-25 08:59:25,554 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 95 transitions. Word has length 54 [2020-09-25 08:59:25,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:59:25,555 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 95 transitions. [2020-09-25 08:59:25,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 08:59:25,555 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 95 transitions. [2020-09-25 08:59:25,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 08:59:25,556 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:59:25,556 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:59:25,556 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 08:59:25,556 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:59:25,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:59:25,557 INFO L82 PathProgramCache]: Analyzing trace with hash 999535374, now seen corresponding path program 1 times [2020-09-25 08:59:25,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:59:25,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [806732021] [2020-09-25 08:59:25,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:59:25,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:25,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:26,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:26,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-25 08:59:26,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:26,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 916 [2020-09-25 08:59:26,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:26,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:26,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 08:59:26,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 08:59:26,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 08:59:26,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:27,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:59:27,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:27,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:27,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:27,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:59:27,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:27,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:59:27,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:27,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:27,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:27,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:27,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:27,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:59:27,062 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:59:27,062 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [806732021] [2020-09-25 08:59:27,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:59:27,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 08:59:27,063 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56044239] [2020-09-25 08:59:27,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 08:59:27,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:59:27,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 08:59:27,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=227, Unknown=0, NotChecked=0, Total=272 [2020-09-25 08:59:27,064 INFO L87 Difference]: Start difference. First operand 92 states and 95 transitions. Second operand 17 states. [2020-09-25 08:59:28,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:59:28,566 INFO L93 Difference]: Finished difference Result 181 states and 189 transitions. [2020-09-25 08:59:28,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 08:59:28,566 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 55 [2020-09-25 08:59:28,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:59:28,567 INFO L225 Difference]: With dead ends: 181 [2020-09-25 08:59:28,568 INFO L226 Difference]: Without dead ends: 178 [2020-09-25 08:59:28,568 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=235, Invalid=695, Unknown=0, NotChecked=0, Total=930 [2020-09-25 08:59:28,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-09-25 08:59:28,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 125. [2020-09-25 08:59:28,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-09-25 08:59:28,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 130 transitions. [2020-09-25 08:59:28,574 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 130 transitions. Word has length 55 [2020-09-25 08:59:28,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:59:28,575 INFO L479 AbstractCegarLoop]: Abstraction has 125 states and 130 transitions. [2020-09-25 08:59:28,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 08:59:28,575 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 130 transitions. [2020-09-25 08:59:28,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-25 08:59:28,576 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:59:28,576 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:59:28,576 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 08:59:28,576 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:59:28,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:59:28,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1380187476, now seen corresponding path program 1 times [2020-09-25 08:59:28,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:59:28,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [346208156] [2020-09-25 08:59:28,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:59:28,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:28,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:28,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:30,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:30,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:33,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:33,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 08:59:33,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 08:59:33,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-09-25 08:59:33,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:33,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:33,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:59:33,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-09-25 08:59:33,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 08:59:33,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:59:33,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:59:33,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:33,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:33,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:33,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:59:33,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:33,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 08:59:33,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:33,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:33,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:33,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:33,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:33,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:59:33,743 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 08:59:33,744 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [346208156] [2020-09-25 08:59:33,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:59:33,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 08:59:33,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522744337] [2020-09-25 08:59:33,745 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 08:59:33,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:59:33,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 08:59:33,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 08:59:33,746 INFO L87 Difference]: Start difference. First operand 125 states and 130 transitions. Second operand 6 states. [2020-09-25 08:59:34,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:59:34,031 INFO L93 Difference]: Finished difference Result 153 states and 160 transitions. [2020-09-25 08:59:34,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 08:59:34,032 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-09-25 08:59:34,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:59:34,033 INFO L225 Difference]: With dead ends: 153 [2020-09-25 08:59:34,033 INFO L226 Difference]: Without dead ends: 131 [2020-09-25 08:59:34,036 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 08:59:34,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-09-25 08:59:34,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 128. [2020-09-25 08:59:34,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-09-25 08:59:34,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 133 transitions. [2020-09-25 08:59:34,045 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 133 transitions. Word has length 64 [2020-09-25 08:59:34,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:59:34,045 INFO L479 AbstractCegarLoop]: Abstraction has 128 states and 133 transitions. [2020-09-25 08:59:34,046 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 08:59:34,046 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 133 transitions. [2020-09-25 08:59:34,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-25 08:59:34,046 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:59:34,047 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:59:34,047 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 08:59:34,047 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:59:34,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:59:34,048 INFO L82 PathProgramCache]: Analyzing trace with hash 754417445, now seen corresponding path program 1 times [2020-09-25 08:59:34,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:59:34,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1222060024] [2020-09-25 08:59:34,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:59:34,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:34,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:36,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:36,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-25 08:59:36,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:36,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2156 [2020-09-25 08:59:36,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:36,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:36,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 08:59:36,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 08:59:36,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 08:59:36,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:59:37,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:59:37,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:37,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:37,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:37,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:59:37,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:37,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 08:59:37,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:37,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:37,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:37,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:37,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:37,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:59:37,059 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:59:37,060 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1222060024] [2020-09-25 08:59:37,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:59:37,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-09-25 08:59:37,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524551308] [2020-09-25 08:59:37,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-09-25 08:59:37,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:59:37,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-09-25 08:59:37,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2020-09-25 08:59:37,062 INFO L87 Difference]: Start difference. First operand 128 states and 133 transitions. Second operand 22 states. [2020-09-25 08:59:38,499 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 45 [2020-09-25 08:59:38,635 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 39 [2020-09-25 08:59:39,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:59:39,438 INFO L93 Difference]: Finished difference Result 205 states and 212 transitions. [2020-09-25 08:59:39,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-25 08:59:39,438 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 65 [2020-09-25 08:59:39,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:59:39,441 INFO L225 Difference]: With dead ends: 205 [2020-09-25 08:59:39,441 INFO L226 Difference]: Without dead ends: 202 [2020-09-25 08:59:39,443 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=355, Invalid=1451, Unknown=0, NotChecked=0, Total=1806 [2020-09-25 08:59:39,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-09-25 08:59:39,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 140. [2020-09-25 08:59:39,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-09-25 08:59:39,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 145 transitions. [2020-09-25 08:59:39,449 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 145 transitions. Word has length 65 [2020-09-25 08:59:39,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:59:39,450 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 145 transitions. [2020-09-25 08:59:39,450 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-09-25 08:59:39,450 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 145 transitions. [2020-09-25 08:59:39,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 08:59:39,451 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:59:39,451 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:59:39,451 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 08:59:39,452 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:59:39,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:59:39,452 INFO L82 PathProgramCache]: Analyzing trace with hash 715756074, now seen corresponding path program 1 times [2020-09-25 08:59:39,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:59:39,453 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [520753582] [2020-09-25 08:59:39,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:59:39,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:39,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:39,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:40,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:41,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:42,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:44,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:44,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:44,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 08:59:44,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 08:59:44,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5273 [2020-09-25 08:59:44,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:44,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:44,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 08:59:44,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-09-25 08:59:44,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 08:59:44,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:59:45,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:59:45,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:45,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:45,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:45,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:59:45,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:59:45,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:59:45,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:45,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:45,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:59:45,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:59:45,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:59:45,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:59:45,119 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:59:45,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [520753582] [2020-09-25 08:59:45,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:59:45,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 08:59:45,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389236909] [2020-09-25 08:59:45,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 08:59:45,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:59:45,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 08:59:45,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2020-09-25 08:59:45,122 INFO L87 Difference]: Start difference. First operand 140 states and 145 transitions. Second operand 16 states. [2020-09-25 08:59:46,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:59:46,276 INFO L93 Difference]: Finished difference Result 229 states and 238 transitions. [2020-09-25 08:59:46,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 08:59:46,277 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 71 [2020-09-25 08:59:46,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:59:46,279 INFO L225 Difference]: With dead ends: 229 [2020-09-25 08:59:46,279 INFO L226 Difference]: Without dead ends: 207 [2020-09-25 08:59:46,281 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=174, Invalid=818, Unknown=0, NotChecked=0, Total=992 [2020-09-25 08:59:46,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-09-25 08:59:46,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 168. [2020-09-25 08:59:46,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-09-25 08:59:46,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 174 transitions. [2020-09-25 08:59:46,298 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 174 transitions. Word has length 71 [2020-09-25 08:59:46,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:59:46,298 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 174 transitions. [2020-09-25 08:59:46,299 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 08:59:46,299 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 174 transitions. [2020-09-25 08:59:46,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-09-25 08:59:46,299 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:59:46,300 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:59:46,300 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 08:59:46,300 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:59:46,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:59:46,301 INFO L82 PathProgramCache]: Analyzing trace with hash 181469332, now seen corresponding path program 2 times [2020-09-25 08:59:46,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:59:46,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1257200747] [2020-09-25 08:59:46,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:59:46,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:59:46,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:46,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:47,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:48,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:49,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:50,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:59:51,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:59:51,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 08:59:51,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 08:59:51,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5108 [2020-09-25 08:59:51,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:59:51,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:59:51,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-25 08:59:51,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 08:59:51,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 08:59:51,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0