/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/Problem13_label28.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:16:47,831 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:16:47,835 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:16:47,902 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:16:47,903 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:16:47,909 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:16:47,912 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:16:47,917 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:16:47,921 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:16:47,928 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:16:47,929 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:16:47,930 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:16:47,930 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:16:47,932 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:16:47,937 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:16:47,940 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:16:47,941 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:16:47,945 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:16:47,954 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:16:47,958 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:16:47,965 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:16:47,967 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:16:47,968 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:16:47,972 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:16:47,982 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:16:47,983 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:16:47,983 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:16:47,987 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:16:47,988 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:16:47,989 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 07:16:47,989 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 07:16:47,990 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 07:16:47,992 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 07:16:47,993 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 07:16:47,995 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 07:16:47,995 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 07:16:48,007 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 07:16:48,008 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 07:16:48,008 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:16:48,009 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:16:48,010 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:16:48,018 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 07:16:48,073 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:16:48,073 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:16:48,078 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:16:48,079 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:16:48,079 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:16:48,079 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:16:48,079 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:16:48,080 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:16:48,080 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:16:48,080 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:16:48,081 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:16:48,081 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:16:48,082 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:16:48,082 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:16:48,082 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:16:48,082 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:16:48,082 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:16:48,083 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:16:48,083 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:16:48,083 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:16:48,083 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:16:48,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:16:48,084 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:16:48,084 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:16:48,084 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:16:48,084 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:16:48,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:16:48,085 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:16:48,085 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:16:48,085 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:16:48,569 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:16:48,606 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:16:48,610 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:16:48,612 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:16:48,613 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:16:48,614 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label28.c [2020-10-29 07:16:48,702 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/80478719a/99d35f4b9203435889520ba194c4a8a1/FLAG8d7ee4181 [2020-10-29 07:16:49,974 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:16:49,975 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label28.c [2020-10-29 07:16:50,018 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/80478719a/99d35f4b9203435889520ba194c4a8a1/FLAG8d7ee4181 [2020-10-29 07:16:50,308 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/80478719a/99d35f4b9203435889520ba194c4a8a1 [2020-10-29 07:16:50,312 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:16:50,319 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:16:50,321 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:16:50,322 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:16:50,326 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:16:50,327 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:16:50" (1/1) ... [2020-10-29 07:16:50,332 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3387b0c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:16:50, skipping insertion in model container [2020-10-29 07:16:50,332 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:16:50" (1/1) ... [2020-10-29 07:16:50,344 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:16:50,510 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:16:52,160 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:16:52,174 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:16:53,057 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:16:53,101 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:16:53,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:16:53 WrapperNode [2020-10-29 07:16:53,103 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:16:53,105 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:16:53,106 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:16:53,106 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:16:53,122 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:16:53" (1/1) ... [2020-10-29 07:16:53,124 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:16:53" (1/1) ... [2020-10-29 07:16:53,220 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:16:53" (1/1) ... [2020-10-29 07:16:53,220 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:16:53" (1/1) ... [2020-10-29 07:16:53,399 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:16:53" (1/1) ... [2020-10-29 07:16:53,436 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:16:53" (1/1) ... [2020-10-29 07:16:53,504 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:16:53" (1/1) ... [2020-10-29 07:16:53,579 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:16:53,582 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:16:53,583 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:16:53,583 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:16:53,584 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:16:53" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:16:53,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:16:53,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:16:53,788 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:16:53,788 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:16:53,788 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 07:16:53,789 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 07:16:53,789 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 07:16:53,789 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:16:53,789 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:16:53,789 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 07:16:53,790 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 07:16:53,790 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 07:16:53,790 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:16:53,791 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:16:53,791 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:16:53,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:16:53,792 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:16:53,793 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:16:53,793 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:16:53,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:16:53,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:16:53,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:16:53,793 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:16:53,794 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:16:53,794 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:17:04,705 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:17:04,706 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:17:04,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:17:04 BoogieIcfgContainer [2020-10-29 07:17:04,714 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:17:04,716 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:17:04,717 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:17:04,722 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:17:04,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:16:50" (1/3) ... [2020-10-29 07:17:04,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ca9718 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:17:04, skipping insertion in model container [2020-10-29 07:17:04,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:16:53" (2/3) ... [2020-10-29 07:17:04,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ca9718 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:17:04, skipping insertion in model container [2020-10-29 07:17:04,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:17:04" (3/3) ... [2020-10-29 07:17:04,727 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem13_label28.c [2020-10-29 07:17:04,741 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:17:04,748 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:17:04,763 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:17:04,825 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:17:04,825 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:17:04,826 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:17:04,826 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:17:04,826 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:17:04,826 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:17:04,826 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:17:04,826 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:17:04,887 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states. [2020-10-29 07:17:04,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-29 07:17:04,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:17:04,900 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] [2020-10-29 07:17:04,900 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:17:04,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:17:04,911 INFO L82 PathProgramCache]: Analyzing trace with hash 294988666, now seen corresponding path program 1 times [2020-10-29 07:17:04,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:17:04,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [754093388] [2020-10-29 07:17:04,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:17:05,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:17:05,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:17:05,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:17:05,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-29 07:17:05,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:17:05,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 608 [2020-10-29 07:17:05,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:17:05,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:17:05,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:17:05,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:17:05,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 07:17:05,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:17:05,985 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:17:05,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:17:06,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:17:06,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:17:06,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:17:06,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:17:06,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:17:06,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 07:17:06,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:17:06,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:17:06,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:17:06,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:17:06,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:17:06,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:17:06,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:17:06,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [754093388] [2020-10-29 07:17:06,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:17:06,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 07:17:06,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529969647] [2020-10-29 07:17:06,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 07:17:06,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:17:06,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 07:17:06,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 07:17:06,116 INFO L87 Difference]: Start difference. First operand 1123 states. Second operand 4 states. [2020-10-29 07:17:06,298 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 07:17:28,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:17:28,639 INFO L93 Difference]: Finished difference Result 3112 states and 5735 transitions. [2020-10-29 07:17:28,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:17:28,644 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-10-29 07:17:28,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:17:28,691 INFO L225 Difference]: With dead ends: 3112 [2020-10-29 07:17:28,692 INFO L226 Difference]: Without dead ends: 1904 [2020-10-29 07:17:28,708 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:17:28,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1904 states. [2020-10-29 07:17:28,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1904 to 1884. [2020-10-29 07:17:28,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1884 states. [2020-10-29 07:17:28,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1884 states to 1884 states and 2891 transitions. [2020-10-29 07:17:28,935 INFO L78 Accepts]: Start accepts. Automaton has 1884 states and 2891 transitions. Word has length 22 [2020-10-29 07:17:28,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:17:28,936 INFO L481 AbstractCegarLoop]: Abstraction has 1884 states and 2891 transitions. [2020-10-29 07:17:28,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 07:17:28,936 INFO L276 IsEmpty]: Start isEmpty. Operand 1884 states and 2891 transitions. [2020-10-29 07:17:28,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-29 07:17:28,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:17:28,947 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 07:17:28,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:17:28,948 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:17:28,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:17:28,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1678455906, now seen corresponding path program 1 times [2020-10-29 07:17:28,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:17:28,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [474163345] [2020-10-29 07:17:28,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:17:29,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:17:29,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:17:29,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:17:29,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-29 07:17:29,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:17:29,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 540 [2020-10-29 07:17:29,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:17:29,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:17:29,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:17:29,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:17:29,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 07:17:29,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:17:29,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:17:29,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:17:29,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:17:29,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:17:29,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:17:29,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:17:29,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 07:17:29,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:17:29,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:17:29,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:17:29,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:17:29,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:17:29,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:17:29,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:17:29,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:17:29,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:17:29,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:17:29,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 07:17:29,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:17:29,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-29 07:17:29,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:17:29,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:17:29,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:17:29,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:17:29,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 07:17:29,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:17:30,069 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:17:30,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [474163345] [2020-10-29 07:17:30,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:17:30,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:17:30,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354219863] [2020-10-29 07:17:30,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:17:30,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:17:30,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:17:30,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:17:30,074 INFO L87 Difference]: Start difference. First operand 1884 states and 2891 transitions. Second operand 7 states. [2020-10-29 07:18:00,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:18:00,093 INFO L93 Difference]: Finished difference Result 5565 states and 8577 transitions. [2020-10-29 07:18:00,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:18:00,105 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 91 [2020-10-29 07:18:00,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:18:00,127 INFO L225 Difference]: With dead ends: 5565 [2020-10-29 07:18:00,128 INFO L226 Difference]: Without dead ends: 3687 [2020-10-29 07:18:00,135 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:18:00,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3687 states. [2020-10-29 07:18:00,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3687 to 3551. [2020-10-29 07:18:00,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3551 states. [2020-10-29 07:18:00,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3551 states to 3551 states and 5021 transitions. [2020-10-29 07:18:00,329 INFO L78 Accepts]: Start accepts. Automaton has 3551 states and 5021 transitions. Word has length 91 [2020-10-29 07:18:00,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:18:00,330 INFO L481 AbstractCegarLoop]: Abstraction has 3551 states and 5021 transitions. [2020-10-29 07:18:00,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:18:00,330 INFO L276 IsEmpty]: Start isEmpty. Operand 3551 states and 5021 transitions. [2020-10-29 07:18:00,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-29 07:18:00,341 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:18:00,341 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 07:18:00,341 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:18:00,341 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:18:00,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:18:00,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1038431438, now seen corresponding path program 1 times [2020-10-29 07:18:00,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:18:00,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1256017169] [2020-10-29 07:18:00,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:18:00,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:18:00,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:18:00,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:18:01,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:18:01,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:18:01,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:18:01,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:18:01,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1427 [2020-10-29 07:18:01,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:18:01,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:18:01,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:18:01,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:18:01,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-29 07:18:01,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:18:01,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:18:01,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:18:01,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:18:01,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:18:01,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:18:01,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:18:01,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 07:18:01,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:18:01,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:18:01,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:18:01,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:18:01,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:18:01,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:18:02,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:18:02,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:18:02,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:18:02,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:18:02,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 07:18:02,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:18:02,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 295 [2020-10-29 07:18:02,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:18:02,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:18:02,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:18:02,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:18:02,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 07:18:02,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:18:02,428 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:18:02,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1256017169] [2020-10-29 07:18:02,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:18:02,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:18:02,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688526872] [2020-10-29 07:18:02,430 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:18:02,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:18:02,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:18:02,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:18:02,432 INFO L87 Difference]: Start difference. First operand 3551 states and 5021 transitions. Second operand 7 states. [2020-10-29 07:18:34,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:18:34,945 INFO L93 Difference]: Finished difference Result 8128 states and 11699 transitions. [2020-10-29 07:18:34,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:18:34,947 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 99 [2020-10-29 07:18:34,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:18:34,973 INFO L225 Difference]: With dead ends: 8128 [2020-10-29 07:18:34,974 INFO L226 Difference]: Without dead ends: 4583 [2020-10-29 07:18:34,983 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:18:34,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4583 states. [2020-10-29 07:18:35,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4583 to 4465. [2020-10-29 07:18:35,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4465 states. [2020-10-29 07:18:35,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4465 states to 4465 states and 5745 transitions. [2020-10-29 07:18:35,193 INFO L78 Accepts]: Start accepts. Automaton has 4465 states and 5745 transitions. Word has length 99 [2020-10-29 07:18:35,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:18:35,194 INFO L481 AbstractCegarLoop]: Abstraction has 4465 states and 5745 transitions. [2020-10-29 07:18:35,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:18:35,194 INFO L276 IsEmpty]: Start isEmpty. Operand 4465 states and 5745 transitions. [2020-10-29 07:18:35,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-29 07:18:35,200 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:18:35,201 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 07:18:35,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:18:35,201 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:18:35,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:18:35,204 INFO L82 PathProgramCache]: Analyzing trace with hash -1097771282, now seen corresponding path program 1 times [2020-10-29 07:18:35,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:18:35,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1203222162] [2020-10-29 07:18:35,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:18:35,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:18:35,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:18:35,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:18:36,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:18:36,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-29 07:18:36,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:18:36,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1247 [2020-10-29 07:18:36,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:18:36,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:18:36,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:18:36,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:18:36,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-29 07:18:36,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:18:36,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:18:36,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:18:36,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:18:36,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:18:36,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:18:36,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:18:36,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 07:18:36,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:18:36,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:18:36,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:18:36,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:18:36,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:18:36,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:18:36,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:18:36,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:18:36,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:18:37,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:18:37,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:18:37,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:18:37,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 293 [2020-10-29 07:18:37,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:18:37,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:18:37,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:18:37,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:18:37,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 07:18:37,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-29 07:18:37,194 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:18:37,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1203222162] [2020-10-29 07:18:37,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:18:37,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:18:37,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411793288] [2020-10-29 07:18:37,197 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:18:37,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:18:37,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:18:37,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:18:37,198 INFO L87 Difference]: Start difference. First operand 4465 states and 5745 transitions. Second operand 7 states. [2020-10-29 07:19:02,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:19:02,259 INFO L93 Difference]: Finished difference Result 10930 states and 14890 transitions. [2020-10-29 07:19:02,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:19:02,262 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 131 [2020-10-29 07:19:02,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:19:02,307 INFO L225 Difference]: With dead ends: 10930 [2020-10-29 07:19:02,307 INFO L226 Difference]: Without dead ends: 7274 [2020-10-29 07:19:02,320 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:19:02,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7274 states. [2020-10-29 07:19:02,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7274 to 7133. [2020-10-29 07:19:02,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7133 states. [2020-10-29 07:19:02,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7133 states to 7133 states and 8922 transitions. [2020-10-29 07:19:02,542 INFO L78 Accepts]: Start accepts. Automaton has 7133 states and 8922 transitions. Word has length 131 [2020-10-29 07:19:02,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:19:02,546 INFO L481 AbstractCegarLoop]: Abstraction has 7133 states and 8922 transitions. [2020-10-29 07:19:02,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:19:02,546 INFO L276 IsEmpty]: Start isEmpty. Operand 7133 states and 8922 transitions. [2020-10-29 07:19:02,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-10-29 07:19:02,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:19:02,555 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-29 07:19:02,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:19:02,555 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:19:02,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:19:02,556 INFO L82 PathProgramCache]: Analyzing trace with hash -298501670, now seen corresponding path program 1 times [2020-10-29 07:19:02,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:19:02,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [168009000] [2020-10-29 07:19:02,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:19:02,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:19:02,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:19:02,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:19:05,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:19:05,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-29 07:19:05,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:19:05,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2850 [2020-10-29 07:19:05,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:19:05,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:19:05,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:19:05,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:19:05,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-29 07:19:05,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:19:05,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:19:05,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:19:05,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:19:05,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:19:05,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:19:05,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:19:05,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 07:19:05,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:19:05,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:19:05,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:19:05,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:19:05,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:19:05,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:19:05,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:19:05,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:19:05,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:19:05,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:19:05,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-29 07:19:05,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:19:05,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-29 07:19:05,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:19:05,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:19:05,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:19:05,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:19:05,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-29 07:19:05,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:19:06,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-29 07:19:06,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:19:06,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:19:06,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:19:06,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 07:19:06,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:19:06,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-29 07:19:06,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:19:06,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:19:06,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:19:06,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-29 07:19:06,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:19:06,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 07:19:06,390 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 28 proven. 72 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 07:19:06,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [168009000] [2020-10-29 07:19:06,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:19:06,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:19:06,391 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736769388] [2020-10-29 07:19:06,393 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:19:06,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:19:06,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:19:06,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:19:06,394 INFO L87 Difference]: Start difference. First operand 7133 states and 8922 transitions. Second operand 7 states. [2020-10-29 07:19:06,540 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-29 07:19:08,519 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-10-29 07:19:37,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:19:37,148 INFO L93 Difference]: Finished difference Result 13821 states and 17506 transitions. [2020-10-29 07:19:37,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:19:37,157 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 192 [2020-10-29 07:19:37,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:19:37,199 INFO L225 Difference]: With dead ends: 13821 [2020-10-29 07:19:37,199 INFO L226 Difference]: Without dead ends: 7497 [2020-10-29 07:19:37,215 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:19:37,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7497 states. [2020-10-29 07:19:37,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7497 to 7182. [2020-10-29 07:19:37,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7182 states. [2020-10-29 07:19:37,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7182 states to 7182 states and 8980 transitions. [2020-10-29 07:19:37,418 INFO L78 Accepts]: Start accepts. Automaton has 7182 states and 8980 transitions. Word has length 192 [2020-10-29 07:19:37,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:19:37,418 INFO L481 AbstractCegarLoop]: Abstraction has 7182 states and 8980 transitions. [2020-10-29 07:19:37,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:19:37,419 INFO L276 IsEmpty]: Start isEmpty. Operand 7182 states and 8980 transitions. [2020-10-29 07:19:37,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-10-29 07:19:37,421 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:19:37,422 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-29 07:19:37,422 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:19:37,422 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:19:37,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:19:37,423 INFO L82 PathProgramCache]: Analyzing trace with hash -738160687, now seen corresponding path program 1 times [2020-10-29 07:19:37,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:19:37,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [543791526] [2020-10-29 07:19:37,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:19:37,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:19:37,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:19:37,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:19:38,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:19:38,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:19:38,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-10-29 07:19:38,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:19:38,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1357 [2020-10-29 07:19:38,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:19:38,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:19:38,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:19:38,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-29 07:19:38,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 07:19:38,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:19:38,995 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:19:38,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:19:38,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:19:39,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:19:39,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:19:39,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:19:39,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:19:39,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 07:19:39,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:19:39,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:19:39,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:19:39,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:19:39,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:19:39,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:19:39,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:19:39,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:19:39,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:19:39,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:19:39,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-29 07:19:39,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:19:39,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-29 07:19:39,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:19:39,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:19:39,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:19:39,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:19:39,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 07:19:39,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:19:39,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-29 07:19:39,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:19:39,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:19:39,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:19:39,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 07:19:39,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:19:39,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-29 07:19:39,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:19:39,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:19:39,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:19:39,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:19:39,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 07:19:39,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:19:39,711 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 102 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:19:39,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [543791526] [2020-10-29 07:19:39,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:19:39,714 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:19:39,714 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807235520] [2020-10-29 07:19:39,715 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:19:39,715 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:19:39,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:19:39,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:19:39,717 INFO L87 Difference]: Start difference. First operand 7182 states and 8980 transitions. Second operand 7 states. [2020-10-29 07:20:08,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:20:08,906 INFO L93 Difference]: Finished difference Result 17312 states and 22833 transitions. [2020-10-29 07:20:08,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:20:08,917 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 199 [2020-10-29 07:20:08,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:20:08,982 INFO L225 Difference]: With dead ends: 17312 [2020-10-29 07:20:08,982 INFO L226 Difference]: Without dead ends: 10939 [2020-10-29 07:20:09,000 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:20:09,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10939 states. [2020-10-29 07:20:09,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10939 to 10708. [2020-10-29 07:20:09,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10708 states. [2020-10-29 07:20:09,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10708 states to 10708 states and 13164 transitions. [2020-10-29 07:20:09,321 INFO L78 Accepts]: Start accepts. Automaton has 10708 states and 13164 transitions. Word has length 199 [2020-10-29 07:20:09,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:20:09,322 INFO L481 AbstractCegarLoop]: Abstraction has 10708 states and 13164 transitions. [2020-10-29 07:20:09,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:20:09,322 INFO L276 IsEmpty]: Start isEmpty. Operand 10708 states and 13164 transitions. [2020-10-29 07:20:09,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-10-29 07:20:09,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:20:09,328 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:20:09,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:20:09,330 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:20:09,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:20:09,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1451604279, now seen corresponding path program 1 times [2020-10-29 07:20:09,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:20:09,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2004953073] [2020-10-29 07:20:09,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:20:09,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:20:09,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:20:09,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:20:10,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:20:11,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:20:11,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:20:12,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:20:12,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-10-29 07:20:12,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:20:12,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2681 [2020-10-29 07:20:12,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:20:12,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:20:12,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 07:20:12,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:20:12,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 249 [2020-10-29 07:20:12,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:20:12,540 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:20:12,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:20:12,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:20:12,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:20:12,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:20:12,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:20:12,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:20:12,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 07:20:12,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:20:12,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:20:12,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:20:12,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:20:12,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:20:12,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:20:12,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:20:12,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:20:12,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:20:12,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:20:13,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:20:13,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 07:20:13,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:20:13,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 418 [2020-10-29 07:20:13,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:20:13,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:20:13,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:20:13,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:20:13,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-29 07:20:13,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:20:13,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-29 07:20:13,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:20:13,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:20:13,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:20:13,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:20:13,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-29 07:20:13,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:20:13,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 406 [2020-10-29 07:20:13,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:20:13,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:20:13,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:20:13,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:20:13,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 07:20:13,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:20:13,814 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 20 proven. 11 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-29 07:20:13,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2004953073] [2020-10-29 07:20:13,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:20:13,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:20:13,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397443816] [2020-10-29 07:20:13,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:20:13,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:20:13,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:20:13,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:20:13,820 INFO L87 Difference]: Start difference. First operand 10708 states and 13164 transitions. Second operand 7 states. [2020-10-29 07:20:14,013 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-29 07:20:14,873 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 07:20:15,451 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-10-29 07:20:17,329 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 74