/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_label08.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 06:54:49,666 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 06:54:49,670 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 06:54:49,736 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 06:54:49,737 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 06:54:49,743 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 06:54:49,745 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 06:54:49,750 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 06:54:49,753 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 06:54:49,760 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 06:54:49,761 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 06:54:49,763 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 06:54:49,764 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 06:54:49,767 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 06:54:49,769 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 06:54:49,772 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 06:54:49,773 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 06:54:49,777 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 06:54:49,785 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 06:54:49,790 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 06:54:49,792 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 06:54:49,793 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 06:54:49,795 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 06:54:49,796 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 06:54:49,820 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 06:54:49,824 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 06:54:49,824 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 06:54:49,827 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 06:54:49,827 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 06:54:49,829 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 06:54:49,829 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 06:54:49,830 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 06:54:49,832 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 06:54:49,833 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 06:54:49,834 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 06:54:49,834 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 06:54:49,835 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 06:54:49,836 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 06:54:49,836 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 06:54:49,837 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 06:54:49,838 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 06:54:49,845 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 06:54:49,901 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 06:54:49,901 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 06:54:49,906 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 06:54:49,907 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 06:54:49,907 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 06:54:49,907 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 06:54:49,907 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 06:54:49,908 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 06:54:49,908 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 06:54:49,908 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 06:54:49,909 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 06:54:49,910 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 06:54:49,910 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 06:54:49,910 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 06:54:49,910 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 06:54:49,911 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 06:54:49,911 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 06:54:49,911 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 06:54:49,911 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 06:54:49,912 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 06:54:49,912 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 06:54:49,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 06:54:49,912 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 06:54:49,913 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 06:54:49,913 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 06:54:49,913 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 06:54:49,913 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 06:54:49,913 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 06:54:49,914 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 06:54:49,914 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 06:54:50,318 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 06:54:50,349 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 06:54:50,353 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 06:54:50,354 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 06:54:50,355 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 06:54:50,356 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label08.c [2020-10-29 06:54:50,429 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee5d0ab6f/8a603f618e0f4a7db2423f6e9be4a92a/FLAGdbd868898 [2020-10-29 06:54:51,414 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 06:54:51,415 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label08.c [2020-10-29 06:54:51,460 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee5d0ab6f/8a603f618e0f4a7db2423f6e9be4a92a/FLAGdbd868898 [2020-10-29 06:54:51,887 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ee5d0ab6f/8a603f618e0f4a7db2423f6e9be4a92a [2020-10-29 06:54:51,892 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 06:54:51,900 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 06:54:51,905 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 06:54:51,905 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 06:54:51,909 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 06:54:51,910 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 06:54:51" (1/1) ... [2020-10-29 06:54:51,917 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52ad8f89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:54:51, skipping insertion in model container [2020-10-29 06:54:51,917 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 06:54:51" (1/1) ... [2020-10-29 06:54:51,927 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 06:54:52,092 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 06:54:53,584 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 06:54:53,603 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 06:54:54,360 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 06:54:54,395 INFO L208 MainTranslator]: Completed translation [2020-10-29 06:54:54,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:54:54 WrapperNode [2020-10-29 06:54:54,396 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 06:54:54,397 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 06:54:54,398 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 06:54:54,398 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 06:54:54,412 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:54:54" (1/1) ... [2020-10-29 06:54:54,414 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:54:54" (1/1) ... [2020-10-29 06:54:54,487 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:54:54" (1/1) ... [2020-10-29 06:54:54,487 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:54:54" (1/1) ... [2020-10-29 06:54:54,667 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:54:54" (1/1) ... [2020-10-29 06:54:54,707 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:54:54" (1/1) ... [2020-10-29 06:54:54,745 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:54:54" (1/1) ... [2020-10-29 06:54:54,793 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 06:54:54,795 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 06:54:54,796 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 06:54:54,796 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 06:54:54,797 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:54:54" (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 06:54:54,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 06:54:54,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 06:54:54,884 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 06:54:54,884 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 06:54:54,884 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 06:54:54,885 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 06:54:54,885 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 06:54:54,885 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 06:54:54,886 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 06:54:54,886 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 06:54:54,887 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 06:54:54,887 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 06:54:54,887 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 06:54:54,887 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 06:54:54,887 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 06:54:54,888 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 06:54:54,889 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 06:54:54,889 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 06:54:54,889 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 06:54:54,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 06:54:54,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 06:54:54,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 06:54:54,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 06:54:54,890 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 06:54:54,890 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 06:55:00,340 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 06:55:00,340 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 06:55:00,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 06:55:00 BoogieIcfgContainer [2020-10-29 06:55:00,347 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 06:55:00,351 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 06:55:00,351 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 06:55:00,356 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 06:55:00,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 06:54:51" (1/3) ... [2020-10-29 06:55:00,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5234645c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 06:55:00, skipping insertion in model container [2020-10-29 06:55:00,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:54:54" (2/3) ... [2020-10-29 06:55:00,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5234645c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 06:55:00, skipping insertion in model container [2020-10-29 06:55:00,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 06:55:00" (3/3) ... [2020-10-29 06:55:00,362 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label08.c [2020-10-29 06:55:00,377 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 06:55:00,385 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 06:55:00,400 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 06:55:00,458 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 06:55:00,458 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 06:55:00,458 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 06:55:00,458 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 06:55:00,458 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 06:55:00,459 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 06:55:00,459 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 06:55:00,459 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 06:55:00,510 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-29 06:55:00,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-29 06:55:00,520 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:55:00,521 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] [2020-10-29 06:55:00,521 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:55:00,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:55:00,532 INFO L82 PathProgramCache]: Analyzing trace with hash 386783980, now seen corresponding path program 1 times [2020-10-29 06:55:00,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:55:00,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1823404932] [2020-10-29 06:55:00,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:55:00,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:00,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:01,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:01,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 06:55:01,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:55:01,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 495 [2020-10-29 06:55:01,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:01,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:01,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:55:01,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:55:01,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-29 06:55:01,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 06:55:01,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:55:01,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:01,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:01,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:01,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:55:01,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:55:01,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 06:55:01,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:01,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:01,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:55:01,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:55:01,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:55:01,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:55:01,589 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 06:55:01,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1823404932] [2020-10-29 06:55:01,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 06:55:01,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 06:55:01,595 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662762364] [2020-10-29 06:55:01,600 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 06:55:01,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:55:01,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 06:55:01,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 06:55:01,626 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 4 states. [2020-10-29 06:55:13,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:55:13,328 INFO L93 Difference]: Finished difference Result 2476 states and 4741 transitions. [2020-10-29 06:55:13,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:55:13,330 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-10-29 06:55:13,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:55:13,367 INFO L225 Difference]: With dead ends: 2476 [2020-10-29 06:55:13,368 INFO L226 Difference]: Without dead ends: 1569 [2020-10-29 06:55:13,390 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 06:55:13,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-10-29 06:55:13,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1556. [2020-10-29 06:55:13,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1556 states. [2020-10-29 06:55:13,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1556 states to 1556 states and 2404 transitions. [2020-10-29 06:55:13,604 INFO L78 Accepts]: Start accepts. Automaton has 1556 states and 2404 transitions. Word has length 36 [2020-10-29 06:55:13,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:55:13,606 INFO L481 AbstractCegarLoop]: Abstraction has 1556 states and 2404 transitions. [2020-10-29 06:55:13,606 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 06:55:13,606 INFO L276 IsEmpty]: Start isEmpty. Operand 1556 states and 2404 transitions. [2020-10-29 06:55:13,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-29 06:55:13,615 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:55:13,616 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:55:13,617 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 06:55:13,617 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:55:13,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:55:13,619 INFO L82 PathProgramCache]: Analyzing trace with hash 286350122, now seen corresponding path program 1 times [2020-10-29 06:55:13,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:55:13,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [503929894] [2020-10-29 06:55:13,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:55:13,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:13,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:13,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:14,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:14,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-29 06:55:14,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:55:14,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 967 [2020-10-29 06:55:14,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:14,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:14,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 06:55:14,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:55:14,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-29 06:55:14,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:55:14,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:55:14,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:14,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:14,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:14,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:55:14,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:55:14,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 06:55:14,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:14,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:14,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:55:14,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:55:14,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:55:14,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:55:14,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:55:14,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:14,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:15,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:15,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 06:55:15,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:55:15,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-29 06:55:15,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:15,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:15,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:55:15,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:55:15,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 06:55:15,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:55:15,140 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 06:55:15,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [503929894] [2020-10-29 06:55:15,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:55:15,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 06:55:15,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462059736] [2020-10-29 06:55:15,143 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 06:55:15,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:55:15,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 06:55:15,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:55:15,147 INFO L87 Difference]: Start difference. First operand 1556 states and 2404 transitions. Second operand 6 states. [2020-10-29 06:55:28,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:55:28,175 INFO L93 Difference]: Finished difference Result 4718 states and 7355 transitions. [2020-10-29 06:55:28,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 06:55:28,179 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 111 [2020-10-29 06:55:28,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:55:28,204 INFO L225 Difference]: With dead ends: 4718 [2020-10-29 06:55:28,205 INFO L226 Difference]: Without dead ends: 3168 [2020-10-29 06:55:28,210 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 06:55:28,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3168 states. [2020-10-29 06:55:28,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3168 to 3138. [2020-10-29 06:55:28,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3138 states. [2020-10-29 06:55:28,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3138 states to 3138 states and 4302 transitions. [2020-10-29 06:55:28,332 INFO L78 Accepts]: Start accepts. Automaton has 3138 states and 4302 transitions. Word has length 111 [2020-10-29 06:55:28,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:55:28,333 INFO L481 AbstractCegarLoop]: Abstraction has 3138 states and 4302 transitions. [2020-10-29 06:55:28,334 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 06:55:28,334 INFO L276 IsEmpty]: Start isEmpty. Operand 3138 states and 4302 transitions. [2020-10-29 06:55:28,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-29 06:55:28,337 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:55:28,337 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:55:28,337 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 06:55:28,338 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:55:28,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:55:28,338 INFO L82 PathProgramCache]: Analyzing trace with hash 1339829342, now seen corresponding path program 1 times [2020-10-29 06:55:28,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:55:28,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [948596089] [2020-10-29 06:55:28,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:55:28,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:28,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:28,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:29,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:29,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-29 06:55:29,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:55:29,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1069 [2020-10-29 06:55:29,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:29,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:29,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:55:29,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:55:29,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 06:55:29,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:55:29,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:55:29,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:29,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:29,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:29,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:55:29,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:55:29,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 06:55:29,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:29,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:29,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:55:29,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:55:29,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:55:29,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:55:29,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:55:29,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:29,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:29,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:29,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 06:55:29,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:55:29,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-29 06:55:29,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:29,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:29,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:55:29,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:55:29,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 06:55:29,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:55:29,947 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:55:29,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [948596089] [2020-10-29 06:55:29,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 06:55:29,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 06:55:29,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917961503] [2020-10-29 06:55:29,950 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:55:29,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:55:29,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:55:29,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:55:29,954 INFO L87 Difference]: Start difference. First operand 3138 states and 4302 transitions. Second operand 7 states. [2020-10-29 06:55:45,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:55:45,028 INFO L93 Difference]: Finished difference Result 9603 states and 13328 transitions. [2020-10-29 06:55:45,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 06:55:45,029 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 117 [2020-10-29 06:55:45,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:55:45,063 INFO L225 Difference]: With dead ends: 9603 [2020-10-29 06:55:45,063 INFO L226 Difference]: Without dead ends: 6471 [2020-10-29 06:55:45,073 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:55:45,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6471 states. [2020-10-29 06:55:45,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6471 to 6400. [2020-10-29 06:55:45,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6400 states. [2020-10-29 06:55:45,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6400 states to 6400 states and 8202 transitions. [2020-10-29 06:55:45,286 INFO L78 Accepts]: Start accepts. Automaton has 6400 states and 8202 transitions. Word has length 117 [2020-10-29 06:55:45,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:55:45,286 INFO L481 AbstractCegarLoop]: Abstraction has 6400 states and 8202 transitions. [2020-10-29 06:55:45,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:55:45,287 INFO L276 IsEmpty]: Start isEmpty. Operand 6400 states and 8202 transitions. [2020-10-29 06:55:45,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-29 06:55:45,292 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:55:45,292 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:55:45,292 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 06:55:45,293 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:55:45,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:55:45,293 INFO L82 PathProgramCache]: Analyzing trace with hash -172856764, now seen corresponding path program 1 times [2020-10-29 06:55:45,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:55:45,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [513974344] [2020-10-29 06:55:45,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:55:45,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:45,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:45,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:47,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:47,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-29 06:55:47,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:55:47,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2104 [2020-10-29 06:55:47,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:47,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:47,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:55:47,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:55:47,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-29 06:55:47,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:55:47,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:55:47,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:47,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:47,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:47,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:55:47,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:55:47,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 06:55:47,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:47,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:47,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:55:47,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:55:47,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:55:47,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:55:47,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:55:47,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:47,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:48,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:48,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-29 06:55:48,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:55:48,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 281 [2020-10-29 06:55:48,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:48,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:48,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:55:48,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:55:48,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-29 06:55:48,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:55:48,572 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:55:48,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [513974344] [2020-10-29 06:55:48,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 06:55:48,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 06:55:48,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220182629] [2020-10-29 06:55:48,574 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:55:48,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:55:48,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:55:48,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:55:48,575 INFO L87 Difference]: Start difference. First operand 6400 states and 8202 transitions. Second operand 7 states. [2020-10-29 06:56:01,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:56:01,570 INFO L93 Difference]: Finished difference Result 16040 states and 20285 transitions. [2020-10-29 06:56:01,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 06:56:01,573 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 184 [2020-10-29 06:56:01,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:56:01,624 INFO L225 Difference]: With dead ends: 16040 [2020-10-29 06:56:01,624 INFO L226 Difference]: Without dead ends: 9646 [2020-10-29 06:56:01,643 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-29 06:56:01,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9646 states. [2020-10-29 06:56:01,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9646 to 8806. [2020-10-29 06:56:01,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8806 states. [2020-10-29 06:56:01,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8806 states to 8806 states and 10804 transitions. [2020-10-29 06:56:01,897 INFO L78 Accepts]: Start accepts. Automaton has 8806 states and 10804 transitions. Word has length 184 [2020-10-29 06:56:01,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:56:01,899 INFO L481 AbstractCegarLoop]: Abstraction has 8806 states and 10804 transitions. [2020-10-29 06:56:01,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:56:01,899 INFO L276 IsEmpty]: Start isEmpty. Operand 8806 states and 10804 transitions. [2020-10-29 06:56:01,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-10-29 06:56:01,905 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:56:01,905 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 06:56:01,905 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 06:56:01,906 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:56:01,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:56:01,906 INFO L82 PathProgramCache]: Analyzing trace with hash -1405821230, now seen corresponding path program 1 times [2020-10-29 06:56:01,907 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:56:01,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [562820280] [2020-10-29 06:56:01,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:56:01,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:56:02,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:02,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:02,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:03,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:56:03,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-10-29 06:56:03,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:56:03,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1560 [2020-10-29 06:56:03,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:56:03,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:56:03,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:56:03,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-29 06:56:03,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 06:56:03,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:56:03,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:56:03,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:56:03,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:03,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:56:03,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:56:03,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:56:03,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 06:56:03,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:56:03,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:56:03,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:56:03,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:56:03,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:56:03,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 06:56:03,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:56:03,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:56:03,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:03,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:56:03,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 06:56:03,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:56:03,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-29 06:56:03,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:56:03,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:56:03,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:56:03,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:56:03,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 06:56:03,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 06:56:03,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-29 06:56:03,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:56:03,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:04,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:56:04,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-29 06:56:04,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:56:04,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 300 [2020-10-29 06:56:04,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:56:04,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:56:04,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:56:04,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:56:04,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-29 06:56:04,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-29 06:56:04,410 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 128 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 06:56:04,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [562820280] [2020-10-29 06:56:04,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:56:04,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 06:56:04,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216024256] [2020-10-29 06:56:04,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 06:56:04,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:56:04,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 06:56:04,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 06:56:04,412 INFO L87 Difference]: Start difference. First operand 8806 states and 10804 transitions. Second operand 8 states. [2020-10-29 06:56:42,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:56:42,073 INFO L93 Difference]: Finished difference Result 37814 states and 49712 transitions. [2020-10-29 06:56:42,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 06:56:42,077 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 219 [2020-10-29 06:56:42,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:56:42,220 INFO L225 Difference]: With dead ends: 37814 [2020-10-29 06:56:42,220 INFO L226 Difference]: Without dead ends: 28237 [2020-10-29 06:56:42,250 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-29 06:56:42,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28237 states. [2020-10-29 06:56:42,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28237 to 27413. [2020-10-29 06:56:42,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27413 states. [2020-10-29 06:56:42,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27413 states to 27413 states and 33674 transitions. [2020-10-29 06:56:42,977 INFO L78 Accepts]: Start accepts. Automaton has 27413 states and 33674 transitions. Word has length 219 [2020-10-29 06:56:42,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:56:42,977 INFO L481 AbstractCegarLoop]: Abstraction has 27413 states and 33674 transitions. [2020-10-29 06:56:42,979 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 06:56:42,979 INFO L276 IsEmpty]: Start isEmpty. Operand 27413 states and 33674 transitions. [2020-10-29 06:56:42,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-10-29 06:56:42,983 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:56:42,983 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 06:56:42,983 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 06:56:42,984 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:56:42,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:56:42,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1098469242, now seen corresponding path program 1 times [2020-10-29 06:56:42,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:56:42,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1507272738] [2020-10-29 06:56:42,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:56:43,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:56:43,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:43,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:44,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:44,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:56:44,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-10-29 06:56:44,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:56:44,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1635 [2020-10-29 06:56:44,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:56:44,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:56:44,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:56:44,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-29 06:56:44,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-29 06:56:44,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:56:44,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:56:44,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:56:44,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:44,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:56:44,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:56:44,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:56:44,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 06:56:44,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:56:44,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:56:44,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:56:44,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:56:44,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:56:44,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:56:44,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:56:44,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:56:44,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:44,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:56:44,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 06:56:44,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:56:44,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-29 06:56:44,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:56:44,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:56:44,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:56:44,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:56:44,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 06:56:44,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:56:44,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-29 06:56:44,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:56:44,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:56:45,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:56:45,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-29 06:56:45,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:56:45,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-29 06:56:45,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:56:45,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:56:45,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:56:45,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:56:45,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-29 06:56:45,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:56:45,432 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 128 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 06:56:45,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1507272738] [2020-10-29 06:56:45,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:56:45,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:56:45,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79398545] [2020-10-29 06:56:45,435 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:56:45,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:56:45,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:56:45,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:56:45,438 INFO L87 Difference]: Start difference. First operand 27413 states and 33674 transitions. Second operand 7 states. [2020-10-29 06:56:59,381 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 06:57:07,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:57:07,063 INFO L93 Difference]: Finished difference Result 65889 states and 84627 transitions. [2020-10-29 06:57:07,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:57:07,069 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 225 [2020-10-29 06:57:07,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:57:07,226 INFO L225 Difference]: With dead ends: 65889 [2020-10-29 06:57:07,227 INFO L226 Difference]: Without dead ends: 36798 [2020-10-29 06:57:07,295 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:57:07,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36798 states. [2020-10-29 06:57:08,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36798 to 34920. [2020-10-29 06:57:08,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34920 states. [2020-10-29 06:57:08,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34920 states to 34920 states and 41552 transitions. [2020-10-29 06:57:08,213 INFO L78 Accepts]: Start accepts. Automaton has 34920 states and 41552 transitions. Word has length 225 [2020-10-29 06:57:08,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:57:08,214 INFO L481 AbstractCegarLoop]: Abstraction has 34920 states and 41552 transitions. [2020-10-29 06:57:08,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:57:08,214 INFO L276 IsEmpty]: Start isEmpty. Operand 34920 states and 41552 transitions. [2020-10-29 06:57:08,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-29 06:57:08,218 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:57:08,219 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 06:57:08,219 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 06:57:08,219 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:57:08,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:57:08,222 INFO L82 PathProgramCache]: Analyzing trace with hash -610257160, now seen corresponding path program 1 times [2020-10-29 06:57:08,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:57:08,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1625244000] [2020-10-29 06:57:08,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:57:08,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:57:08,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:08,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:09,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:10,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:57:10,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-10-29 06:57:10,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:57:10,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2495 [2020-10-29 06:57:10,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:57:10,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:57:10,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:57:10,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-29 06:57:10,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 06:57:10,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:57:10,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:57:10,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:57:10,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:10,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:57:10,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:57:10,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:57:10,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 06:57:10,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:57:11,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:57:11,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:57:11,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:57:11,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:57:11,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:57:11,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:57:11,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:57:11,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:11,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:57:11,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-29 06:57:11,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:57:11,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-29 06:57:11,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:57:11,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:57:11,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:57:11,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:57:11,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-29 06:57:11,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:57:11,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-29 06:57:11,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:57:11,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:11,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:57:11,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 06:57:11,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:57:11,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-29 06:57:11,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:57:11,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:57:11,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:57:11,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:57:11,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 06:57:11,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:57:11,635 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 128 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 06:57:11,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1625244000] [2020-10-29 06:57:11,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:57:11,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:57:11,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327366768] [2020-10-29 06:57:11,637 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:57:11,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:57:11,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:57:11,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:57:11,640 INFO L87 Difference]: Start difference. First operand 34920 states and 41552 transitions. Second operand 7 states. [2020-10-29 06:57:13,052 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-29 06:57:19,234 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-29 06:57:34,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:57:34,658 INFO L93 Difference]: Finished difference Result 83640 states and 103558 transitions. [2020-10-29 06:57:34,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 06:57:34,661 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 256 [2020-10-29 06:57:34,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:57:34,879 INFO L225 Difference]: With dead ends: 83640 [2020-10-29 06:57:34,879 INFO L226 Difference]: Without dead ends: 49493 [2020-10-29 06:57:34,939 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:57:35,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49493 states. [2020-10-29 06:57:36,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49493 to 48468. [2020-10-29 06:57:36,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48468 states. [2020-10-29 06:57:36,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48468 states to 48468 states and 60164 transitions. [2020-10-29 06:57:36,509 INFO L78 Accepts]: Start accepts. Automaton has 48468 states and 60164 transitions. Word has length 256 [2020-10-29 06:57:36,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:57:36,512 INFO L481 AbstractCegarLoop]: Abstraction has 48468 states and 60164 transitions. [2020-10-29 06:57:36,512 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:57:36,513 INFO L276 IsEmpty]: Start isEmpty. Operand 48468 states and 60164 transitions. [2020-10-29 06:57:36,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2020-10-29 06:57:36,518 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:57:36,518 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 06:57:36,518 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 06:57:36,518 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:57:36,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:57:36,519 INFO L82 PathProgramCache]: Analyzing trace with hash -1243668836, now seen corresponding path program 1 times [2020-10-29 06:57:36,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:57:36,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [815794249] [2020-10-29 06:57:36,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:57:36,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:57:36,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:37,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:38,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:38,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:57:38,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 284 [2020-10-29 06:57:38,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:57:38,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1790 [2020-10-29 06:57:38,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:57:38,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:57:38,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:57:38,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-29 06:57:38,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-29 06:57:38,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:57:38,569 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 06:57:38,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:57:38,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:57:38,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:38,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:57:38,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:57:38,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:57:38,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 06:57:38,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:57:38,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:57:38,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:57:38,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:57:38,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:57:38,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:57:38,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:57:38,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:57:38,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:38,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:57:38,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-29 06:57:38,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:57:38,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-29 06:57:38,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:57:38,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:57:38,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:57:38,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:57:38,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-29 06:57:38,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:57:38,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-29 06:57:38,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:57:38,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:39,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:57:39,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 06:57:39,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:57:39,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-29 06:57:39,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:57:39,043 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:57:39,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:57:39,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:57:39,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 06:57:39,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:57:39,368 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 142 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 06:57:39,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [815794249] [2020-10-29 06:57:39,368 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:57:39,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 06:57:39,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688630661] [2020-10-29 06:57:39,369 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 06:57:39,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:57:39,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 06:57:39,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 06:57:39,371 INFO L87 Difference]: Start difference. First operand 48468 states and 60164 transitions. Second operand 8 states. [2020-10-29 06:57:39,567 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-29 06:58:13,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:58:13,226 INFO L93 Difference]: Finished difference Result 164920 states and 214363 transitions. [2020-10-29 06:58:13,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 06:58:13,229 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 270 [2020-10-29 06:58:13,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:58:14,053 INFO L225 Difference]: With dead ends: 164920 [2020-10-29 06:58:14,053 INFO L226 Difference]: Without dead ends: 115597 [2020-10-29 06:58:14,138 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-29 06:58:14,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115597 states. [2020-10-29 06:58:17,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115597 to 113953. [2020-10-29 06:58:17,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113953 states. [2020-10-29 06:58:17,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113953 states to 113953 states and 146438 transitions. [2020-10-29 06:58:17,641 INFO L78 Accepts]: Start accepts. Automaton has 113953 states and 146438 transitions. Word has length 270 [2020-10-29 06:58:17,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:58:17,645 INFO L481 AbstractCegarLoop]: Abstraction has 113953 states and 146438 transitions. [2020-10-29 06:58:17,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 06:58:17,645 INFO L276 IsEmpty]: Start isEmpty. Operand 113953 states and 146438 transitions. [2020-10-29 06:58:17,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-10-29 06:58:17,648 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:58:17,649 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 06:58:17,649 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 06:58:17,649 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:58:17,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:58:17,650 INFO L82 PathProgramCache]: Analyzing trace with hash 715098660, now seen corresponding path program 1 times [2020-10-29 06:58:17,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:58:17,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1630675917] [2020-10-29 06:58:17,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:58:17,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:58:17,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:17,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:19,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:58:19,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 288 [2020-10-29 06:58:19,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:58:19,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1973 [2020-10-29 06:58:19,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:58:19,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:58:19,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:58:19,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-29 06:58:19,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-29 06:58:19,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:58:19,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:58:19,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:58:19,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:19,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:58:19,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:58:19,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:58:19,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 06:58:19,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:58:19,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:58:19,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:58:19,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:58:19,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:58:19,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:58:20,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:58:20,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:58:20,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:20,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:58:20,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-29 06:58:20,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:58:20,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-29 06:58:20,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:58:20,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:58:20,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:58:20,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:58:20,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-29 06:58:20,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:58:20,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-29 06:58:20,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:58:20,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:20,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:58:20,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 06:58:20,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:58:20,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-29 06:58:20,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:58:20,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:58:20,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:58:20,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:58:20,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 06:58:20,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:58:20,552 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 142 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 06:58:20,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1630675917] [2020-10-29 06:58:20,553 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:58:20,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:58:20,553 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311204944] [2020-10-29 06:58:20,554 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:58:20,554 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:58:20,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:58:20,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:58:20,555 INFO L87 Difference]: Start difference. First operand 113953 states and 146438 transitions. Second operand 7 states. [2020-10-29 06:58:22,033 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 66