/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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 SequenceOfStatements --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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label31.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:01:05,728 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:01:05,731 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:01:05,772 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:01:05,772 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:01:05,774 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:01:05,776 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:01:05,778 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:01:05,781 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:01:05,782 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:01:05,783 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:01:05,785 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:01:05,786 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:01:05,787 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:01:05,789 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:01:05,790 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:01:05,791 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:01:05,792 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:01:05,795 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:01:05,797 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:01:05,799 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:01:05,801 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:01:05,803 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:01:05,804 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:01:05,815 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:01:05,815 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:01:05,816 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:01:05,817 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:01:05,818 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:01:05,819 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 07:01:05,820 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 07:01:05,824 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 07:01:05,825 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 07:01:05,830 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 07:01:05,831 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 07:01:05,832 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 07:01:05,833 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 07:01:05,834 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 07:01:05,835 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:01:05,836 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:01:05,837 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:01:05,840 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 [2020-10-29 07:01:05,915 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:01:05,915 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:01:05,918 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:01:05,918 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:01:05,918 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:01:05,918 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:01:05,919 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:01:05,919 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:01:05,921 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:01:05,921 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:01:05,922 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:01:05,922 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:01:05,923 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:01:05,923 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:01:05,923 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:01:05,923 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:01:05,923 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:01:05,924 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:01:05,924 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:01:05,924 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:01:05,924 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:01:05,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:01:05,925 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:01:05,925 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:01:05,926 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:01:05,926 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:01:05,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:01:05,926 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:01:05,926 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:01:05,926 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:01:06,434 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:01:06,466 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:01:06,470 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:01:06,472 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:01:06,472 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:01:06,473 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label31.c [2020-10-29 07:01:06,574 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac4c1edbc/5d6b5c3a5e714604bd4813b83455c4db/FLAGf244d7d03 [2020-10-29 07:01:07,605 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:01:07,606 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label31.c [2020-10-29 07:01:07,642 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac4c1edbc/5d6b5c3a5e714604bd4813b83455c4db/FLAGf244d7d03 [2020-10-29 07:01:07,978 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac4c1edbc/5d6b5c3a5e714604bd4813b83455c4db [2020-10-29 07:01:07,981 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:01:07,990 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:01:07,992 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:01:07,992 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:01:07,996 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:01:07,997 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:01:07" (1/1) ... [2020-10-29 07:01:08,000 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@290b80f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:01:07, skipping insertion in model container [2020-10-29 07:01:08,001 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:01:07" (1/1) ... [2020-10-29 07:01:08,009 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:01:08,142 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:01:09,444 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:01:09,456 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:01:10,281 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:01:10,325 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:01:10,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:01:10 WrapperNode [2020-10-29 07:01:10,327 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:01:10,330 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:01:10,330 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:01:10,330 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:01:10,350 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:01:10" (1/1) ... [2020-10-29 07:01:10,350 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:01:10" (1/1) ... [2020-10-29 07:01:10,414 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:01:10" (1/1) ... [2020-10-29 07:01:10,414 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:01:10" (1/1) ... [2020-10-29 07:01:10,556 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:01:10" (1/1) ... [2020-10-29 07:01:10,602 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:01:10" (1/1) ... [2020-10-29 07:01:10,635 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:01:10" (1/1) ... [2020-10-29 07:01:10,667 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:01:10,669 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:01:10,669 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:01:10,669 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:01:10,670 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:01:10" (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 [2020-10-29 07:01:10,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:01:10,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:01:10,762 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:01:10,762 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:01:10,763 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 07:01:10,763 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 07:01:10,763 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 07:01:10,763 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:01:10,763 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:01:10,764 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 07:01:10,764 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 07:01:10,765 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 07:01:10,765 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:01:10,765 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:01:10,765 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:01:10,766 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:01:10,766 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:01:10,766 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:01:10,766 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:01:10,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:01:10,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:01:10,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:01:10,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:01:10,767 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:01:10,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:01:16,337 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:01:16,338 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:01:16,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:01:16 BoogieIcfgContainer [2020-10-29 07:01:16,342 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:01:16,344 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:01:16,344 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:01:16,348 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:01:16,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:01:07" (1/3) ... [2020-10-29 07:01:16,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61048719 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:01:16, skipping insertion in model container [2020-10-29 07:01:16,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:01:10" (2/3) ... [2020-10-29 07:01:16,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61048719 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:01:16, skipping insertion in model container [2020-10-29 07:01:16,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:01:16" (3/3) ... [2020-10-29 07:01:16,353 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label31.c [2020-10-29 07:01:16,366 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:01:16,373 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:01:16,388 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:01:16,426 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:01:16,426 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:01:16,426 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:01:16,426 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:01:16,426 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:01:16,426 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:01:16,427 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:01:16,427 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:01:16,465 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-29 07:01:16,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-29 07:01:16,475 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:01:16,476 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:01:16,477 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:01:16,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:01:16,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1227471988, now seen corresponding path program 1 times [2020-10-29 07:01:16,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:01:16,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [606638051] [2020-10-29 07:01:16,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:01:16,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:01:16,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:17,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:01:17,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 07:01:17,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:01:17,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 563 [2020-10-29 07:01:17,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:01:17,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:01:17,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:01:17,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:01:17,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 07:01:17,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:01:17,520 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:01:17,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:01:17,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:01:17,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:17,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:01:17,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:01:17,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:01:17,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 07:01:17,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:01:17,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:01:17,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:01:17,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:01:17,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:01:17,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:01:17,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:01:17,605 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [606638051] [2020-10-29 07:01:17,608 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:01:17,608 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 07:01:17,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724623135] [2020-10-29 07:01:17,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 07:01:17,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:01:17,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 07:01:17,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 07:01:17,637 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 4 states. [2020-10-29 07:01:29,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:01:29,157 INFO L93 Difference]: Finished difference Result 2476 states and 4742 transitions. [2020-10-29 07:01:29,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:01:29,160 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 70 [2020-10-29 07:01:29,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:01:29,197 INFO L225 Difference]: With dead ends: 2476 [2020-10-29 07:01:29,198 INFO L226 Difference]: Without dead ends: 1569 [2020-10-29 07:01:29,215 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:01:29,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-10-29 07:01:29,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1554. [2020-10-29 07:01:29,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1554 states. [2020-10-29 07:01:29,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2726 transitions. [2020-10-29 07:01:29,424 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2726 transitions. Word has length 70 [2020-10-29 07:01:29,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:01:29,425 INFO L481 AbstractCegarLoop]: Abstraction has 1554 states and 2726 transitions. [2020-10-29 07:01:29,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 07:01:29,426 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2726 transitions. [2020-10-29 07:01:29,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-29 07:01:29,433 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:01:29,434 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:01:29,434 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:01:29,435 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:01:29,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:01:29,436 INFO L82 PathProgramCache]: Analyzing trace with hash -116250914, now seen corresponding path program 1 times [2020-10-29 07:01:29,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:01:29,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [831124846] [2020-10-29 07:01:29,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:01:29,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:01:29,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:29,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:30,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:31,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:01:31,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-29 07:01:31,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:01:31,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1573 [2020-10-29 07:01:31,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:01:31,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:01:31,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:01:31,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:01:31,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-29 07:01:31,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-29 07:01:31,379 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:01:31,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:01:31,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:01:31,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:31,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:01:31,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:01:31,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:01:31,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 07:01:31,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:01:31,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:01:31,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:01:31,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:01:31,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:01:31,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:01:31,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:01:31,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:01:31,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:31,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:31,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:01:31,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 07:01:31,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:01:31,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-29 07:01:31,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:01:31,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:01:31,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:01:31,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:01:31,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 07:01:31,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:01:31,711 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 58 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 07:01:31,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [831124846] [2020-10-29 07:01:31,712 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:01:31,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 07:01:31,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173897736] [2020-10-29 07:01:31,715 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 07:01:31,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:01:31,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 07:01:31,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:01:31,719 INFO L87 Difference]: Start difference. First operand 1554 states and 2726 transitions. Second operand 6 states. [2020-10-29 07:01:44,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:01:44,431 INFO L93 Difference]: Finished difference Result 4670 states and 8258 transitions. [2020-10-29 07:01:44,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:01:44,445 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2020-10-29 07:01:44,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:01:44,474 INFO L225 Difference]: With dead ends: 4670 [2020-10-29 07:01:44,474 INFO L226 Difference]: Without dead ends: 3122 [2020-10-29 07:01:44,481 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:01:44,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3122 states. [2020-10-29 07:01:44,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3122 to 3107. [2020-10-29 07:01:44,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3107 states. [2020-10-29 07:01:44,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3107 states to 3107 states and 5318 transitions. [2020-10-29 07:01:44,623 INFO L78 Accepts]: Start accepts. Automaton has 3107 states and 5318 transitions. Word has length 139 [2020-10-29 07:01:44,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:01:44,627 INFO L481 AbstractCegarLoop]: Abstraction has 3107 states and 5318 transitions. [2020-10-29 07:01:44,627 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 07:01:44,627 INFO L276 IsEmpty]: Start isEmpty. Operand 3107 states and 5318 transitions. [2020-10-29 07:01:44,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-29 07:01:44,638 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:01:44,639 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:01:44,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:01:44,639 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:01:44,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:01:44,642 INFO L82 PathProgramCache]: Analyzing trace with hash 585835282, now seen corresponding path program 1 times [2020-10-29 07:01:44,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:01:44,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [411763975] [2020-10-29 07:01:44,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:01:44,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:01:44,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:44,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:45,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:45,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:01:45,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-29 07:01:45,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:01:45,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1169 [2020-10-29 07:01:45,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:01:45,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:01:45,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:01:45,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:01:45,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-29 07:01:45,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:01:46,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:01:46,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:01:46,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:46,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:01:46,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:01:46,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:01:46,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 07:01:46,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:01:46,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:01:46,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:01:46,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:01:46,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:01:46,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:01:46,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:01:46,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:01:46,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:46,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:01:46,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 07:01:46,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:01:46,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-29 07:01:46,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:01:46,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:01:46,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:01:46,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:01:46,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 07:01:46,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:01:46,345 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 07:01:46,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [411763975] [2020-10-29 07:01:46,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:01:46,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:01:46,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243179560] [2020-10-29 07:01:46,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 07:01:46,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:01:46,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 07:01:46,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:01:46,351 INFO L87 Difference]: Start difference. First operand 3107 states and 5318 transitions. Second operand 6 states. [2020-10-29 07:02:00,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:02:00,183 INFO L93 Difference]: Finished difference Result 9367 states and 16198 transitions. [2020-10-29 07:02:00,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 07:02:00,190 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 145 [2020-10-29 07:02:00,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:02:00,238 INFO L225 Difference]: With dead ends: 9367 [2020-10-29 07:02:00,238 INFO L226 Difference]: Without dead ends: 6266 [2020-10-29 07:02:00,250 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:02:00,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6266 states. [2020-10-29 07:02:00,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6266 to 6243. [2020-10-29 07:02:00,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6243 states. [2020-10-29 07:02:00,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6243 states to 6243 states and 9290 transitions. [2020-10-29 07:02:00,497 INFO L78 Accepts]: Start accepts. Automaton has 6243 states and 9290 transitions. Word has length 145 [2020-10-29 07:02:00,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:02:00,499 INFO L481 AbstractCegarLoop]: Abstraction has 6243 states and 9290 transitions. [2020-10-29 07:02:00,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 07:02:00,500 INFO L276 IsEmpty]: Start isEmpty. Operand 6243 states and 9290 transitions. [2020-10-29 07:02:00,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-29 07:02:00,503 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:02:00,506 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:02:00,507 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:02:00,507 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:02:00,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:02:00,508 INFO L82 PathProgramCache]: Analyzing trace with hash 639802558, now seen corresponding path program 1 times [2020-10-29 07:02:00,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:02:00,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [111640268] [2020-10-29 07:02:00,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:02:00,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:02:00,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:00,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:01,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:02:01,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-29 07:02:01,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:02:01,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 878 [2020-10-29 07:02:01,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:02:01,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:02:01,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:02:01,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-29 07:02:01,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-29 07:02:01,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:02:01,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:02:01,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:02:01,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:01,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:02:01,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:02:01,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:02:01,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 07:02:01,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:02:01,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:02:01,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:02:01,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:02:01,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:02:01,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:02:01,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:02:01,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:02:01,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:01,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:02:01,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 07:02:01,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:02:01,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-29 07:02:01,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:02:01,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:02:01,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:02:01,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:02:01,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 07:02:01,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:02:01,806 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 61 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:02:01,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [111640268] [2020-10-29 07:02:01,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:02:01,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 07:02:01,807 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781874915] [2020-10-29 07:02:01,809 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 07:02:01,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:02:01,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 07:02:01,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:02:01,822 INFO L87 Difference]: Start difference. First operand 6243 states and 9290 transitions. Second operand 6 states. [2020-10-29 07:02:22,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:02:22,551 INFO L93 Difference]: Finished difference Result 23398 states and 36463 transitions. [2020-10-29 07:02:22,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 07:02:22,553 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 155 [2020-10-29 07:02:22,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:02:22,654 INFO L225 Difference]: With dead ends: 23398 [2020-10-29 07:02:22,654 INFO L226 Difference]: Without dead ends: 17161 [2020-10-29 07:02:22,680 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:02:22,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17161 states. [2020-10-29 07:02:23,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17161 to 17151. [2020-10-29 07:02:23,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17151 states. [2020-10-29 07:02:23,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17151 states to 17151 states and 24081 transitions. [2020-10-29 07:02:23,293 INFO L78 Accepts]: Start accepts. Automaton has 17151 states and 24081 transitions. Word has length 155 [2020-10-29 07:02:23,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:02:23,294 INFO L481 AbstractCegarLoop]: Abstraction has 17151 states and 24081 transitions. [2020-10-29 07:02:23,294 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 07:02:23,294 INFO L276 IsEmpty]: Start isEmpty. Operand 17151 states and 24081 transitions. [2020-10-29 07:02:23,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-10-29 07:02:23,303 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:02:23,303 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:02:23,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:02:23,304 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:02:23,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:02:23,305 INFO L82 PathProgramCache]: Analyzing trace with hash -2127062936, now seen corresponding path program 1 times [2020-10-29 07:02:23,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:02:23,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1345879628] [2020-10-29 07:02:23,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:02:23,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:02:23,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:23,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:23,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:24,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:25,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:02:25,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-29 07:02:25,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:02:25,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2303 [2020-10-29 07:02:25,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:02:25,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:02:25,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:02:25,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:02:25,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-29 07:02:25,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:02:25,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:02:25,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:02:25,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:25,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:02:25,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:02:25,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:02:25,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 07:02:25,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:02:25,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:02:25,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:02:25,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:02:25,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:02:25,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:02:25,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:02:25,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:02:25,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:26,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:02:26,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 07:02:26,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:02:26,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-29 07:02:26,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:02:26,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:02:26,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:02:26,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:02:26,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 07:02:26,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:02:26,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-29 07:02:26,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:02:26,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:26,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:02:26,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 07:02:26,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:02:26,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 285 [2020-10-29 07:02:26,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:02:26,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:02:26,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:02:26,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:02:26,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 07:02:26,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:02:26,886 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 193 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 07:02:26,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1345879628] [2020-10-29 07:02:26,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:02:26,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:02:26,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190974513] [2020-10-29 07:02:26,890 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:02:26,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:02:26,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:02:26,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:02:26,891 INFO L87 Difference]: Start difference. First operand 17151 states and 24081 transitions. Second operand 8 states. [2020-10-29 07:02:27,039 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 07:02:43,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:02:43,982 INFO L93 Difference]: Finished difference Result 44941 states and 65630 transitions. [2020-10-29 07:02:43,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:02:43,984 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 226 [2020-10-29 07:02:43,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:02:44,102 INFO L225 Difference]: With dead ends: 44941 [2020-10-29 07:02:44,103 INFO L226 Difference]: Without dead ends: 27796 [2020-10-29 07:02:44,146 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:02:44,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27796 states. [2020-10-29 07:02:44,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27796 to 26887. [2020-10-29 07:02:44,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26887 states. [2020-10-29 07:02:44,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26887 states to 26887 states and 37507 transitions. [2020-10-29 07:02:44,951 INFO L78 Accepts]: Start accepts. Automaton has 26887 states and 37507 transitions. Word has length 226 [2020-10-29 07:02:44,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:02:44,952 INFO L481 AbstractCegarLoop]: Abstraction has 26887 states and 37507 transitions. [2020-10-29 07:02:44,952 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:02:44,952 INFO L276 IsEmpty]: Start isEmpty. Operand 26887 states and 37507 transitions. [2020-10-29 07:02:44,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2020-10-29 07:02:44,962 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:02:44,963 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:02:44,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:02:44,963 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:02:44,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:02:44,964 INFO L82 PathProgramCache]: Analyzing trace with hash 258968086, now seen corresponding path program 1 times [2020-10-29 07:02:44,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:02:44,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1083199215] [2020-10-29 07:02:44,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:02:45,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:02:45,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:45,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:45,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:47,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:50,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:02:50,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 285 [2020-10-29 07:02:50,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:02:50,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-29 07:02:50,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:02:50,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:02:50,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:02:50,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:02:50,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 209 [2020-10-29 07:02:50,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:02:50,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:02:50,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:02:50,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:50,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:02:50,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:02:50,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:02:50,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 07:02:50,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:02:50,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:02:50,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:02:50,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:02:50,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:02:50,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:02:50,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:02:50,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:02:50,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:50,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:50,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:02:50,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-29 07:02:50,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:02:50,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 427 [2020-10-29 07:02:50,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:02:50,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:02:50,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:02:50,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:02:50,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-29 07:02:50,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:02:50,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-10-29 07:02:50,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:02:50,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:51,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:02:51,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 07:02:51,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:02:51,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-29 07:02:51,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:02:51,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:02:51,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:02:51,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:02:51,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 07:02:51,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:02:51,255 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 125 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-10-29 07:02:51,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1083199215] [2020-10-29 07:02:51,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:02:51,257 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 07:02:51,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464856873] [2020-10-29 07:02:51,258 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:02:51,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:02:51,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:02:51,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:02:51,261 INFO L87 Difference]: Start difference. First operand 26887 states and 37507 transitions. Second operand 7 states. [2020-10-29 07:03:08,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:03:08,398 INFO L93 Difference]: Finished difference Result 52689 states and 75376 transitions. [2020-10-29 07:03:08,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:03:08,400 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 271 [2020-10-29 07:03:08,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:03:08,513 INFO L225 Difference]: With dead ends: 52689 [2020-10-29 07:03:08,513 INFO L226 Difference]: Without dead ends: 25808 [2020-10-29 07:03:08,574 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:03:08,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25808 states. [2020-10-29 07:03:09,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25808 to 24875. [2020-10-29 07:03:09,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24875 states. [2020-10-29 07:03:09,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24875 states to 24875 states and 32910 transitions. [2020-10-29 07:03:09,333 INFO L78 Accepts]: Start accepts. Automaton has 24875 states and 32910 transitions. Word has length 271 [2020-10-29 07:03:09,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:03:09,334 INFO L481 AbstractCegarLoop]: Abstraction has 24875 states and 32910 transitions. [2020-10-29 07:03:09,334 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:03:09,334 INFO L276 IsEmpty]: Start isEmpty. Operand 24875 states and 32910 transitions. [2020-10-29 07:03:09,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2020-10-29 07:03:09,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:03:09,348 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:03:09,348 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:03:09,349 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:03:09,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:03:09,350 INFO L82 PathProgramCache]: Analyzing trace with hash -1799731058, now seen corresponding path program 1 times [2020-10-29 07:03:09,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:03:09,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1909992566] [2020-10-29 07:03:09,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:03:09,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:03:09,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:03:09,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:03:10,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:03:13,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:03:13,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 337 [2020-10-29 07:03:13,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:03:13,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4390 [2020-10-29 07:03:13,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:03:13,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:03:13,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:03:13,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:03:13,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 261 [2020-10-29 07:03:13,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:03:14,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:03:14,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:03:14,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:03:14,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:03:14,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:03:14,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:03:14,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 07:03:14,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:03:14,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:03:14,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:03:14,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:03:14,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:03:14,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:03:14,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:03:14,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:03:14,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:03:14,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:03:14,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:03:14,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-29 07:03:14,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:03:14,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 417 [2020-10-29 07:03:14,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:03:14,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:03:14,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:03:14,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:03:14,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-29 07:03:14,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:03:14,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-29 07:03:14,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:03:14,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:03:14,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:03:14,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-29 07:03:14,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:03:14,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 268 [2020-10-29 07:03:14,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:03:14,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:03:14,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:03:14,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:03:14,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-29 07:03:14,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:03:15,241 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 226 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 07:03:15,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1909992566] [2020-10-29 07:03:15,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:03:15,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:03:15,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287535380] [2020-10-29 07:03:15,243 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:03:15,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:03:15,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:03:15,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:03:15,245 INFO L87 Difference]: Start difference. First operand 24875 states and 32910 transitions. Second operand 7 states. [2020-10-29 07:03:34,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:03:34,174 INFO L93 Difference]: Finished difference Result 60571 states and 82478 transitions. [2020-10-29 07:03:34,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:03:34,176 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 323 [2020-10-29 07:03:34,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:03:34,315 INFO L225 Difference]: With dead ends: 60571 [2020-10-29 07:03:34,316 INFO L226 Difference]: Without dead ends: 35702 [2020-10-29 07:03:34,364 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:03:34,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35702 states. [2020-10-29 07:03:35,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35702 to 34666. [2020-10-29 07:03:35,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34666 states. [2020-10-29 07:03:35,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34666 states to 34666 states and 44758 transitions. [2020-10-29 07:03:35,450 INFO L78 Accepts]: Start accepts. Automaton has 34666 states and 44758 transitions. Word has length 323 [2020-10-29 07:03:35,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:03:35,451 INFO L481 AbstractCegarLoop]: Abstraction has 34666 states and 44758 transitions. [2020-10-29 07:03:35,451 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:03:35,451 INFO L276 IsEmpty]: Start isEmpty. Operand 34666 states and 44758 transitions. [2020-10-29 07:03:35,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2020-10-29 07:03:35,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:03:35,469 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:03:35,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 07:03:35,469 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:03:35,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:03:35,470 INFO L82 PathProgramCache]: Analyzing trace with hash 402324822, now seen corresponding path program 1 times [2020-10-29 07:03:35,470 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:03:35,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2113147930] [2020-10-29 07:03:35,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:03:35,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:03:35,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:03:35,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:03:36,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:03:37,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:03:39,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:03:40,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:03:40,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 383 [2020-10-29 07:03:40,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:03:40,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-29 07:03:40,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:03:40,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:03:40,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:03:40,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 201 [2020-10-29 07:03:40,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-29 07:03:40,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:03:40,780 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:03:40,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:03:40,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:03:40,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:03:40,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:03:40,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:03:40,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:03:40,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 07:03:40,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:03:40,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:03:40,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:03:40,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:03:40,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:03:40,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:03:40,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:03:40,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:03:40,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:03:40,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:03:40,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 07:03:40,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:03:40,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 07:03:40,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:03:40,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:03:40,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:03:40,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:03:40,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:03:40,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:03:40,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-29 07:03:40,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:03:40,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:03:41,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:03:41,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-29 07:03:41,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:03:41,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-29 07:03:41,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:03:41,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:03:41,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:03:41,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:03:41,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-29 07:03:41,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:03:41,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2020-10-29 07:03:41,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:03:41,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:03:41,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:03:41,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:03:41,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-29 07:03:41,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:03:41,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 309 [2020-10-29 07:03:41,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:03:41,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:03:41,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:03:41,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:03:41,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-29 07:03:41,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:03:41,677 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 192 proven. 3 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2020-10-29 07:03:41,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2113147930] [2020-10-29 07:03:41,678 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:03:41,678 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 07:03:41,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787106248] [2020-10-29 07:03:41,679 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 07:03:41,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:03:41,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 07:03:41,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:03:41,680 INFO L87 Difference]: Start difference. First operand 34666 states and 44758 transitions. Second operand 6 states. [2020-10-29 07:03:41,830 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-29 07:04:11,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:04:11,133 INFO L93 Difference]: Finished difference Result 82098 states and 109586 transitions. [2020-10-29 07:04:11,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 07:04:11,136 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 367 [2020-10-29 07:04:11,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:04:11,353 INFO L225 Difference]: With dead ends: 82098 [2020-10-29 07:04:11,353 INFO L226 Difference]: Without dead ends: 48974 [2020-10-29 07:04:11,422 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:04:11,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48974 states. [2020-10-29 07:04:12,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48974 to 48170. [2020-10-29 07:04:12,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48170 states. [2020-10-29 07:04:12,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48170 states to 48170 states and 63719 transitions. [2020-10-29 07:04:12,990 INFO L78 Accepts]: Start accepts. Automaton has 48170 states and 63719 transitions. Word has length 367 [2020-10-29 07:04:12,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:04:12,992 INFO L481 AbstractCegarLoop]: Abstraction has 48170 states and 63719 transitions. [2020-10-29 07:04:12,992 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 07:04:12,992 INFO L276 IsEmpty]: Start isEmpty. Operand 48170 states and 63719 transitions. [2020-10-29 07:04:13,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2020-10-29 07:04:13,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:04:13,017 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:04:13,018 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 07:04:13,018 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:04:13,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:04:13,019 INFO L82 PathProgramCache]: Analyzing trace with hash -1313219146, now seen corresponding path program 1 times [2020-10-29 07:04:13,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:04:13,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [321453541] [2020-10-29 07:04:13,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:04:13,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:04:13,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:04:13,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:04:14,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:04:15,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:04:15,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:04:17,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:04:18,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:04:18,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 405 [2020-10-29 07:04:18,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 07:04:18,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-29 07:04:18,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:04:18,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:04:18,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:04:18,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-29 07:04:18,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 249 [2020-10-29 07:04:18,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:04:18,443 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:04:18,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:04:18,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:04:18,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:04:18,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:04:18,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:04:18,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:04:18,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 07:04:18,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:04:18,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:04:18,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:04:18,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:04:18,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:04:18,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:04:18,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:04:18,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:04:18,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:04:18,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:04:18,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 07:04:18,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:04:18,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-29 07:04:18,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:04:18,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:04:18,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:04:18,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:04:18,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 07:04:18,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:04:18,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-29 07:04:18,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:04:18,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:04:18,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:04:19,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:04:19,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-29 07:04:19,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:04:19,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 381 [2020-10-29 07:04:19,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:04:19,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:04:19,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:04:19,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:04:19,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-29 07:04:19,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:04:19,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-10-29 07:04:19,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:04:19,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:04:19,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:04:19,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 07:04:19,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:04:19,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-29 07:04:19,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:04:19,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:04:19,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:04:19,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:04:19,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 07:04:19,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:04:19,555 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 336 proven. 6 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-29 07:04:19,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [321453541] [2020-10-29 07:04:19,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:04:19,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 07:04:19,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783323685] [2020-10-29 07:04:19,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 07:04:19,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:04:19,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 07:04:19,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-29 07:04:19,559 INFO L87 Difference]: Start difference. First operand 48170 states and 63719 transitions. Second operand 9 states. [2020-10-29 07:04:20,385 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 07:04:21,800 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-29 07:04:21,979 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 07:04:24,360 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 67