/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_label26.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 06:59:02,616 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 06:59:02,619 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 06:59:02,682 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 06:59:02,683 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 06:59:02,691 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 06:59:02,694 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 06:59:02,699 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 06:59:02,703 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 06:59:02,711 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 06:59:02,713 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 06:59:02,714 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 06:59:02,715 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 06:59:02,718 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 06:59:02,721 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 06:59:02,722 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 06:59:02,724 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 06:59:02,728 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 06:59:02,737 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 06:59:02,744 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 06:59:02,749 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 06:59:02,751 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 06:59:02,752 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 06:59:02,755 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 06:59:02,760 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 06:59:02,761 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 06:59:02,761 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 06:59:02,764 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 06:59:02,764 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 06:59:02,765 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 06:59:02,766 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 06:59:02,767 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 06:59:02,769 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 06:59:02,770 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 06:59:02,771 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 06:59:02,771 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 06:59:02,772 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 06:59:02,773 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 06:59:02,773 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 06:59:02,774 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 06:59:02,775 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 06:59:02,777 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 06:59:02,833 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 06:59:02,833 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 06:59:02,838 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 06:59:02,839 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 06:59:02,839 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 06:59:02,839 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 06:59:02,840 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 06:59:02,840 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 06:59:02,840 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 06:59:02,840 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 06:59:02,841 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 06:59:02,842 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 06:59:02,842 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 06:59:02,842 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 06:59:02,842 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 06:59:02,842 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 06:59:02,843 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 06:59:02,843 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 06:59:02,843 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 06:59:02,843 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 06:59:02,843 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 06:59:02,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 06:59:02,844 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 06:59:02,844 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 06:59:02,844 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 06:59:02,845 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 06:59:02,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 06:59:02,845 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 06:59:02,845 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 06:59:02,845 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 06:59:03,273 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 06:59:03,302 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 06:59:03,305 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 06:59:03,307 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 06:59:03,308 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 06:59:03,309 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label26.c [2020-10-29 06:59:03,401 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/835a5206e/e824d1b0ebf949eb9e2152458b5f1421/FLAGded037884 [2020-10-29 06:59:04,478 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 06:59:04,479 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label26.c [2020-10-29 06:59:04,513 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/835a5206e/e824d1b0ebf949eb9e2152458b5f1421/FLAGded037884 [2020-10-29 06:59:04,999 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/835a5206e/e824d1b0ebf949eb9e2152458b5f1421 [2020-10-29 06:59:05,002 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 06:59:05,011 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 06:59:05,015 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 06:59:05,016 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 06:59:05,020 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 06:59:05,021 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 06:59:05" (1/1) ... [2020-10-29 06:59:05,025 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33c3647e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:59:05, skipping insertion in model container [2020-10-29 06:59:05,026 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 06:59:05" (1/1) ... [2020-10-29 06:59:05,035 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 06:59:05,160 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 06:59:06,683 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 06:59:06,696 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 06:59:07,344 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 06:59:07,384 INFO L208 MainTranslator]: Completed translation [2020-10-29 06:59:07,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:59:07 WrapperNode [2020-10-29 06:59:07,386 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 06:59:07,387 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 06:59:07,387 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 06:59:07,387 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 06:59:07,404 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:59:07" (1/1) ... [2020-10-29 06:59:07,406 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:59:07" (1/1) ... [2020-10-29 06:59:07,480 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:59:07" (1/1) ... [2020-10-29 06:59:07,480 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:59:07" (1/1) ... [2020-10-29 06:59:07,656 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:59:07" (1/1) ... [2020-10-29 06:59:07,694 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:59:07" (1/1) ... [2020-10-29 06:59:07,725 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:59:07" (1/1) ... [2020-10-29 06:59:07,758 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 06:59:07,760 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 06:59:07,760 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 06:59:07,760 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 06:59:07,761 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:59:07" (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 06:59:07,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 06:59:07,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 06:59:07,904 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 06:59:07,904 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 06:59:07,904 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 06:59:07,905 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 06:59:07,905 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 06:59:07,905 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 06:59:07,905 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 06:59:07,905 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 06:59:07,905 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 06:59:07,906 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 06:59:07,906 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 06:59:07,906 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 06:59:07,906 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 06:59:07,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 06:59:07,907 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 06:59:07,907 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 06:59:07,907 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 06:59:07,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 06:59:07,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 06:59:07,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 06:59:07,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 06:59:07,908 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 06:59:07,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 06:59:13,750 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 06:59:13,751 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 06:59:13,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 06:59:13 BoogieIcfgContainer [2020-10-29 06:59:13,760 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 06:59:13,762 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 06:59:13,762 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 06:59:13,768 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 06:59:13,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 06:59:05" (1/3) ... [2020-10-29 06:59:13,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a61f5e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 06:59:13, skipping insertion in model container [2020-10-29 06:59:13,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:59:07" (2/3) ... [2020-10-29 06:59:13,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a61f5e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 06:59:13, skipping insertion in model container [2020-10-29 06:59:13,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 06:59:13" (3/3) ... [2020-10-29 06:59:13,774 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label26.c [2020-10-29 06:59:13,789 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 06:59:13,796 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 06:59:13,813 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 06:59:13,870 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 06:59:13,870 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 06:59:13,871 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 06:59:13,871 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 06:59:13,871 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 06:59:13,871 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 06:59:13,871 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 06:59:13,871 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 06:59:13,917 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-29 06:59:13,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-29 06:59:13,927 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:59:13,928 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] [2020-10-29 06:59:13,929 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:59:13,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:59:13,937 INFO L82 PathProgramCache]: Analyzing trace with hash 1526391596, now seen corresponding path program 1 times [2020-10-29 06:59:13,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:59:13,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1968998229] [2020-10-29 06:59:13,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:59:14,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:14,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:15,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:15,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-29 06:59:15,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:59:15,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 885 [2020-10-29 06:59:15,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:15,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:15,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:59:15,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:59:15,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-29 06:59:15,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 06:59:15,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:59:15,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:15,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:15,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:15,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:59:15,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:59:15,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-29 06:59:15,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:15,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:15,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:59:15,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:59:15,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:59:15,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 06:59:15,373 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 06:59:15,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1968998229] [2020-10-29 06:59:15,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 06:59:15,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 06:59:15,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022128684] [2020-10-29 06:59:15,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 06:59:15,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:59:15,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 06:59:15,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 06:59:15,417 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 4 states. [2020-10-29 06:59:30,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:59:30,706 INFO L93 Difference]: Finished difference Result 2492 states and 4754 transitions. [2020-10-29 06:59:30,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:59:30,709 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-10-29 06:59:30,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:59:30,740 INFO L225 Difference]: With dead ends: 2492 [2020-10-29 06:59:30,740 INFO L226 Difference]: Without dead ends: 1569 [2020-10-29 06:59:30,752 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 06:59:30,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-10-29 06:59:30,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1565. [2020-10-29 06:59:30,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-10-29 06:59:30,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 2485 transitions. [2020-10-29 06:59:30,957 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 2485 transitions. Word has length 52 [2020-10-29 06:59:30,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:59:30,958 INFO L481 AbstractCegarLoop]: Abstraction has 1565 states and 2485 transitions. [2020-10-29 06:59:30,958 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 06:59:30,958 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 2485 transitions. [2020-10-29 06:59:30,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-29 06:59:30,965 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:59:30,965 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:59:30,966 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 06:59:30,966 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:59:30,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:59:30,967 INFO L82 PathProgramCache]: Analyzing trace with hash 14172642, now seen corresponding path program 1 times [2020-10-29 06:59:30,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:59:30,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [25627961] [2020-10-29 06:59:30,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:59:31,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:31,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:31,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:32,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:32,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:32,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-29 06:59:32,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:59:32,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1643 [2020-10-29 06:59:32,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:32,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:32,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 06:59:32,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:59:32,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-29 06:59:32,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-29 06:59:32,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:59:32,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:32,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:32,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:32,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:59:32,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:59:32,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 06:59:32,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:32,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:32,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:59:32,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:59:32,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:59:32,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-29 06:59:32,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:59:32,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:33,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:33,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:33,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:33,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 06:59:33,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:59:33,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-29 06:59:33,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:33,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:33,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:59:33,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:59:33,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 06:59:33,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:59:33,337 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 40 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 06:59:33,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [25627961] [2020-10-29 06:59:33,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:59:33,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:59:33,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131153590] [2020-10-29 06:59:33,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:59:33,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:59:33,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:59:33,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:59:33,344 INFO L87 Difference]: Start difference. First operand 1565 states and 2485 transitions. Second operand 7 states. [2020-10-29 06:59:52,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:59:52,705 INFO L93 Difference]: Finished difference Result 6244 states and 10092 transitions. [2020-10-29 06:59:52,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 06:59:52,706 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 131 [2020-10-29 06:59:52,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:59:52,737 INFO L225 Difference]: With dead ends: 6244 [2020-10-29 06:59:52,737 INFO L226 Difference]: Without dead ends: 4685 [2020-10-29 06:59:52,743 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-10-29 06:59:52,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4685 states. [2020-10-29 06:59:52,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4685 to 4677. [2020-10-29 06:59:52,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4677 states. [2020-10-29 06:59:52,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4677 states to 4677 states and 7103 transitions. [2020-10-29 06:59:52,895 INFO L78 Accepts]: Start accepts. Automaton has 4677 states and 7103 transitions. Word has length 131 [2020-10-29 06:59:52,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:59:52,897 INFO L481 AbstractCegarLoop]: Abstraction has 4677 states and 7103 transitions. [2020-10-29 06:59:52,897 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:59:52,897 INFO L276 IsEmpty]: Start isEmpty. Operand 4677 states and 7103 transitions. [2020-10-29 06:59:52,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-29 06:59:52,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:59:52,901 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:59:52,901 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 06:59:52,901 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:59:52,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:59:52,902 INFO L82 PathProgramCache]: Analyzing trace with hash -1584304226, now seen corresponding path program 1 times [2020-10-29 06:59:52,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:59:52,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1664925510] [2020-10-29 06:59:52,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:59:52,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:52,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:53,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:54,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:54,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-29 06:59:54,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:59:54,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1065 [2020-10-29 06:59:54,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:54,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:54,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:59:54,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:59:54,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 06:59:54,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:59:54,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:59:54,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:54,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:54,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:54,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:59:54,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:59:54,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 06:59:54,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:54,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:54,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:59:54,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:59:54,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:59:54,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:59:54,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:59:54,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:54,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:54,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:54,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 06:59:54,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:59:54,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-29 06:59:54,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:54,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:54,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:59:54,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:59:54,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 06:59:54,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:59:54,508 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:59:54,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1664925510] [2020-10-29 06:59:54,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 06:59:54,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 06:59:54,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308663717] [2020-10-29 06:59:54,510 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:59:54,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:59:54,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:59:54,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:59:54,511 INFO L87 Difference]: Start difference. First operand 4677 states and 7103 transitions. Second operand 7 states. [2020-10-29 07:00:13,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:00:13,953 INFO L93 Difference]: Finished difference Result 14248 states and 22225 transitions. [2020-10-29 07:00:13,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:00:13,954 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 133 [2020-10-29 07:00:13,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:00:14,014 INFO L225 Difference]: With dead ends: 14248 [2020-10-29 07:00:14,015 INFO L226 Difference]: Without dead ends: 9577 [2020-10-29 07:00:14,029 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:00:14,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9577 states. [2020-10-29 07:00:14,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9577 to 9522. [2020-10-29 07:00:14,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9522 states. [2020-10-29 07:00:14,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9522 states to 9522 states and 14042 transitions. [2020-10-29 07:00:14,350 INFO L78 Accepts]: Start accepts. Automaton has 9522 states and 14042 transitions. Word has length 133 [2020-10-29 07:00:14,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:00:14,351 INFO L481 AbstractCegarLoop]: Abstraction has 9522 states and 14042 transitions. [2020-10-29 07:00:14,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:00:14,351 INFO L276 IsEmpty]: Start isEmpty. Operand 9522 states and 14042 transitions. [2020-10-29 07:00:14,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-29 07:00:14,365 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:00:14,366 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:00:14,366 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:00:14,366 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:00:14,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:00:14,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1162914582, now seen corresponding path program 1 times [2020-10-29 07:00:14,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:00:14,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1421000459] [2020-10-29 07:00:14,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:00:14,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:00:14,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:14,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:15,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:00:15,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-29 07:00:15,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:00:15,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1017 [2020-10-29 07:00:15,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:00:15,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:00:15,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:00:15,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:00:15,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-29 07:00:15,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:00:15,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:00:15,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:00:15,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:15,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:00:15,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:00:15,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:00:15,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 07:00:15,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:00:15,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:00:15,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:00:15,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:00:15,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:00:15,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:00:15,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:00:15,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:00:15,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:15,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:00:15,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 07:00:15,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:00:15,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-29 07:00:15,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:00:15,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:00:15,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:00:15,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:00:15,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 07:00:15,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:00:15,817 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:00:15,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1421000459] [2020-10-29 07:00:15,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:00:15,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:00:15,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720570050] [2020-10-29 07:00:15,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:00:15,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:00:15,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:00:15,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:00:15,820 INFO L87 Difference]: Start difference. First operand 9522 states and 14042 transitions. Second operand 7 states. [2020-10-29 07:00:33,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:00:33,767 INFO L93 Difference]: Finished difference Result 28167 states and 43509 transitions. [2020-10-29 07:00:33,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:00:33,769 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 137 [2020-10-29 07:00:33,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:00:33,883 INFO L225 Difference]: With dead ends: 28167 [2020-10-29 07:00:33,883 INFO L226 Difference]: Without dead ends: 18651 [2020-10-29 07:00:33,920 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:00:33,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18651 states. [2020-10-29 07:00:34,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18651 to 16965. [2020-10-29 07:00:34,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16965 states. [2020-10-29 07:00:34,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16965 states to 16965 states and 24615 transitions. [2020-10-29 07:00:34,643 INFO L78 Accepts]: Start accepts. Automaton has 16965 states and 24615 transitions. Word has length 137 [2020-10-29 07:00:34,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:00:34,645 INFO L481 AbstractCegarLoop]: Abstraction has 16965 states and 24615 transitions. [2020-10-29 07:00:34,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:00:34,645 INFO L276 IsEmpty]: Start isEmpty. Operand 16965 states and 24615 transitions. [2020-10-29 07:00:34,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-29 07:00:34,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:00:34,648 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:00:34,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:00:34,649 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:00:34,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:00:34,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1322167612, now seen corresponding path program 1 times [2020-10-29 07:00:34,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:00:34,651 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [246839923] [2020-10-29 07:00:34,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:00:34,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:00:34,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:35,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:35,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:00:35,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-29 07:00:35,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:00:35,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1005 [2020-10-29 07:00:35,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:00:35,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:00:35,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:00:35,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:00:35,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-29 07:00:35,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:00:35,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:00:35,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:00:35,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:35,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:00:35,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:00:35,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:00:35,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 07:00:35,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:00:35,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:00:35,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:00:35,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:00:35,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:00:35,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:00:35,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:00:35,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:00:35,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:36,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:00:36,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-29 07:00:36,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:00:36,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 299 [2020-10-29 07:00:36,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:00:36,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:00:36,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:00:36,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:00:36,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-29 07:00:36,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:00:36,365 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:00:36,365 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [246839923] [2020-10-29 07:00:36,366 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:00:36,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:00:36,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080948942] [2020-10-29 07:00:36,367 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:00:36,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:00:36,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:00:36,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:00:36,368 INFO L87 Difference]: Start difference. First operand 16965 states and 24615 transitions. Second operand 7 states. [2020-10-29 07:00:52,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:00:52,530 INFO L93 Difference]: Finished difference Result 34542 states and 50605 transitions. [2020-10-29 07:00:52,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:00:52,532 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 172 [2020-10-29 07:00:52,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:00:52,597 INFO L225 Difference]: With dead ends: 34542 [2020-10-29 07:00:52,597 INFO L226 Difference]: Without dead ends: 17583 [2020-10-29 07:00:52,638 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:00:52,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17583 states. [2020-10-29 07:00:53,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17583 to 17375. [2020-10-29 07:00:53,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17375 states. [2020-10-29 07:00:53,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17375 states to 17375 states and 21388 transitions. [2020-10-29 07:00:53,075 INFO L78 Accepts]: Start accepts. Automaton has 17375 states and 21388 transitions. Word has length 172 [2020-10-29 07:00:53,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:00:53,075 INFO L481 AbstractCegarLoop]: Abstraction has 17375 states and 21388 transitions. [2020-10-29 07:00:53,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:00:53,076 INFO L276 IsEmpty]: Start isEmpty. Operand 17375 states and 21388 transitions. [2020-10-29 07:00:53,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-10-29 07:00:53,081 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:00:53,082 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:00:53,082 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:00:53,082 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:00:53,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:00:53,083 INFO L82 PathProgramCache]: Analyzing trace with hash -2001893576, now seen corresponding path program 1 times [2020-10-29 07:00:53,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:00:53,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1003413417] [2020-10-29 07:00:53,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:00:53,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:00:53,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:53,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:54,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:54,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:00:54,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 286 [2020-10-29 07:00:54,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:00:54,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1834 [2020-10-29 07:00:54,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:00:54,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:00:54,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:00:54,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-29 07:00:54,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 07:00:54,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:00:55,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:00:55,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:00:55,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:55,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:00:55,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:00:55,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:00:55,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:00:55,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:00:55,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:00:55,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:00:55,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:00:55,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:00:55,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:00:55,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:00:55,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:00:55,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:55,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:00:55,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-29 07:00:55,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:00:55,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-10-29 07:00:55,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:00:55,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:00:55,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:00:55,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:00:55,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-29 07:00:55,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:00:55,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-29 07:00:55,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:00:55,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:55,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:00:55,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 07:00:55,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:00:55,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-29 07:00:55,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:00:55,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:00:55,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:00:55,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:00:55,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 07:00:55,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:00:55,817 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 160 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:00:55,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1003413417] [2020-10-29 07:00:55,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:00:55,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:00:55,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [19609517] [2020-10-29 07:00:55,820 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:00:55,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:00:55,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:00:55,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:00:55,821 INFO L87 Difference]: Start difference. First operand 17375 states and 21388 transitions. Second operand 7 states. [2020-10-29 07:00:56,633 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-29 07:01:22,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:01:22,193 INFO L93 Difference]: Finished difference Result 45098 states and 58983 transitions. [2020-10-29 07:01:22,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:01:22,195 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 272 [2020-10-29 07:01:22,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:01:22,308 INFO L225 Difference]: With dead ends: 45098 [2020-10-29 07:01:22,309 INFO L226 Difference]: Without dead ends: 27729 [2020-10-29 07:01:22,348 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:01:22,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27729 states. [2020-10-29 07:01:23,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27729 to 27364. [2020-10-29 07:01:23,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27364 states. [2020-10-29 07:01:23,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27364 states to 27364 states and 34787 transitions. [2020-10-29 07:01:23,145 INFO L78 Accepts]: Start accepts. Automaton has 27364 states and 34787 transitions. Word has length 272 [2020-10-29 07:01:23,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:01:23,145 INFO L481 AbstractCegarLoop]: Abstraction has 27364 states and 34787 transitions. [2020-10-29 07:01:23,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:01:23,146 INFO L276 IsEmpty]: Start isEmpty. Operand 27364 states and 34787 transitions. [2020-10-29 07:01:23,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2020-10-29 07:01:23,152 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:01:23,153 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, 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, 1, 1, 1, 1, 1, 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 07:01:23,153 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:01:23,153 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:01:23,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:01:23,156 INFO L82 PathProgramCache]: Analyzing trace with hash 292448294, now seen corresponding path program 1 times [2020-10-29 07:01:23,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:01:23,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [237045822] [2020-10-29 07:01:23,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:01:23,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:01:23,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:23,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:24,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:28,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:01:28,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 311 [2020-10-29 07:01:28,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:01:28,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-29 07:01:28,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:01:28,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:01:28,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:01:28,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:01:28,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-29 07:01:28,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:01:28,458 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:01:28,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:01:28,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:01:28,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:28,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:01:28,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:01:28,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:01:28,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 07:01:28,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:01:28,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:01:28,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:01:28,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:01:28,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:01:28,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:01:28,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:01:28,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:01:28,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:28,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:01:28,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-29 07:01:28,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:01:28,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 339 [2020-10-29 07:01:28,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:01:28,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:01:28,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:01:28,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:01:28,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-29 07:01:28,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:01:29,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-29 07:01:29,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:01:29,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:29,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:01:29,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-29 07:01:29,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:01:29,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-29 07:01:29,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:01:29,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:01:29,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:01:29,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-29 07:01:29,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:01:29,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:01:29,678 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 88 proven. 92 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 07:01:29,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [237045822] [2020-10-29 07:01:29,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:01:29,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:01:29,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221156088] [2020-10-29 07:01:29,680 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:01:29,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:01:29,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:01:29,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:01:29,682 INFO L87 Difference]: Start difference. First operand 27364 states and 34787 transitions. Second operand 7 states. [2020-10-29 07:01:29,835 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-29 07:01:49,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:01:49,680 INFO L93 Difference]: Finished difference Result 58292 states and 74090 transitions. [2020-10-29 07:01:49,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 07:01:49,683 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 297 [2020-10-29 07:01:49,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:01:49,810 INFO L225 Difference]: With dead ends: 58292 [2020-10-29 07:01:49,810 INFO L226 Difference]: Without dead ends: 31731 [2020-10-29 07:01:49,854 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-29 07:01:49,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31731 states. [2020-10-29 07:01:50,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31731 to 31334. [2020-10-29 07:01:50,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31334 states. [2020-10-29 07:01:50,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31334 states to 31334 states and 39161 transitions. [2020-10-29 07:01:50,692 INFO L78 Accepts]: Start accepts. Automaton has 31334 states and 39161 transitions. Word has length 297 [2020-10-29 07:01:50,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:01:50,692 INFO L481 AbstractCegarLoop]: Abstraction has 31334 states and 39161 transitions. [2020-10-29 07:01:50,693 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:01:50,693 INFO L276 IsEmpty]: Start isEmpty. Operand 31334 states and 39161 transitions. [2020-10-29 07:01:50,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2020-10-29 07:01:50,703 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:01:50,704 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:01:50,704 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 07:01:50,704 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:01:50,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:01:50,705 INFO L82 PathProgramCache]: Analyzing trace with hash -376971352, now seen corresponding path program 1 times [2020-10-29 07:01:50,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:01:50,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [810573918] [2020-10-29 07:01:50,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:01:50,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:01:50,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:50,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:52,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:52,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:55,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:01:55,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 388 [2020-10-29 07:01:55,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:01:55,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-29 07:01:55,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:01:55,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:01:55,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:01:55,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-29 07:01:55,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-29 07:01:55,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:01:56,018 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:01:56,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:01:56,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:01:56,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:56,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:01:56,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:01:56,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:01:56,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 07:01:56,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:01:56,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:01:56,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:01:56,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:01:56,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:01:56,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:01:56,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:01:56,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:01:56,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:56,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:01:56,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 07:01:56,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:01:56,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-29 07:01:56,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:01:56,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:01:56,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:01:56,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:01:56,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 07:01:56,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:01:56,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-29 07:01:56,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:01:56,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:56,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:01:56,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-29 07:01:56,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:01:56,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-10-29 07:01:56,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:01:56,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:01:56,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:01:56,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:01:56,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-29 07:01:56,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:01:56,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2020-10-29 07:01:56,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:01:56,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:56,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:01:56,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-29 07:01:56,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:01:56,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-29 07:01:56,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:01:56,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:01:56,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:01:56,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-29 07:01:56,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:01:56,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:01:56,915 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 208 proven. 96 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-29 07:01:56,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [810573918] [2020-10-29 07:01:56,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:01:56,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:01:56,917 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740405555] [2020-10-29 07:01:56,917 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:01:56,918 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:01:56,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:01:56,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:01:56,918 INFO L87 Difference]: Start difference. First operand 31334 states and 39161 transitions. Second operand 7 states. [2020-10-29 07:02:18,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:02:18,690 INFO L93 Difference]: Finished difference Result 64397 states and 80303 transitions. [2020-10-29 07:02:18,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:02:18,692 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 372 [2020-10-29 07:02:18,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:02:18,806 INFO L225 Difference]: With dead ends: 64397 [2020-10-29 07:02:18,806 INFO L226 Difference]: Without dead ends: 29035 [2020-10-29 07:02:18,867 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:02:18,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29035 states. [2020-10-29 07:02:19,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29035 to 28101. [2020-10-29 07:02:19,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28101 states. [2020-10-29 07:02:19,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28101 states to 28101 states and 33817 transitions. [2020-10-29 07:02:19,653 INFO L78 Accepts]: Start accepts. Automaton has 28101 states and 33817 transitions. Word has length 372 [2020-10-29 07:02:19,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:02:19,653 INFO L481 AbstractCegarLoop]: Abstraction has 28101 states and 33817 transitions. [2020-10-29 07:02:19,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:02:19,654 INFO L276 IsEmpty]: Start isEmpty. Operand 28101 states and 33817 transitions. [2020-10-29 07:02:19,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2020-10-29 07:02:19,666 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:02:19,666 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:02:19,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 07:02:19,667 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:02:19,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:02:19,667 INFO L82 PathProgramCache]: Analyzing trace with hash -1551347762, now seen corresponding path program 1 times [2020-10-29 07:02:19,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:02:19,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1321085860] [2020-10-29 07:02:19,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:02:19,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:02:20,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:20,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:21,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:22,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:25,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:02:25,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 399 [2020-10-29 07:02:25,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:02:25,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-29 07:02:25,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:02:25,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:02:25,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:02:25,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-29 07:02:25,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 191 [2020-10-29 07:02:25,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:02:25,242 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:02:25,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:02:25,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:02:25,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:25,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:02:25,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:02:25,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:02:25,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 07:02:25,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:02:25,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:02:25,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:02:25,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:02:25,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:02:25,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:02:25,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:02:25,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:02:25,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:25,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:02:25,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-29 07:02:25,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:02:25,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-29 07:02:25,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:02:25,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:02:25,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:02:25,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:02:25,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-29 07:02:25,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:02:25,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-29 07:02:25,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:02:25,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:25,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:02:25,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 07:02:25,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:02:25,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-29 07:02:25,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:02:25,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:02:25,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:02:25,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:02:25,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 07:02:25,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:02:25,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-10-29 07:02:25,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:02:25,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:25,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:02:25,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-29 07:02:25,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:02:25,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-29 07:02:25,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:02:25,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:02:25,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:02:25,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:02:25,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-29 07:02:25,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:02:26,079 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 312 proven. 88 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-29 07:02:26,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1321085860] [2020-10-29 07:02:26,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:02:26,080 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:02:26,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768873278] [2020-10-29 07:02:26,083 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:02:26,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:02:26,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:02:26,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:02:26,085 INFO L87 Difference]: Start difference. First operand 28101 states and 33817 transitions. Second operand 8 states. [2020-10-29 07:02:26,226 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 07:02:46,198 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 66