/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_label53.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:06:27,826 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:06:27,832 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:06:27,893 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:06:27,894 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:06:27,901 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:06:27,904 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:06:27,909 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:06:27,934 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:06:27,943 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:06:27,945 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:06:27,946 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:06:27,947 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:06:27,948 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:06:27,949 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:06:27,951 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:06:27,952 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:06:27,953 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:06:27,955 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:06:27,958 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:06:27,960 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:06:27,961 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:06:27,963 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:06:27,964 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:06:27,967 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:06:27,968 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:06:27,968 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:06:27,970 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:06:27,970 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:06:27,972 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 07:06:27,972 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 07:06:27,973 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 07:06:27,975 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 07:06:27,976 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 07:06:27,977 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 07:06:27,978 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 07:06:27,979 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 07:06:27,979 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 07:06:27,980 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:06:27,981 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:06:27,982 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:06:27,984 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 07:06:28,012 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:06:28,013 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:06:28,015 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:06:28,015 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:06:28,016 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:06:28,016 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:06:28,016 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:06:28,016 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:06:28,017 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:06:28,017 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:06:28,017 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:06:28,017 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:06:28,018 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:06:28,018 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:06:28,018 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:06:28,018 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:06:28,019 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:06:28,019 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:06:28,019 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:06:28,019 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:06:28,020 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:06:28,020 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:06:28,020 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:06:28,021 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:06:28,021 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:06:28,021 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:06:28,021 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:06:28,021 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:06:28,022 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:06:28,022 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:06:28,488 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:06:28,537 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:06:28,541 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:06:28,543 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:06:28,544 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:06:28,547 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label53.c [2020-10-29 07:06:28,640 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8d341b339/0f4560f15bdd4b789178ce570e5eaf91/FLAG78615fe2f [2020-10-29 07:06:29,926 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:06:29,927 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label53.c [2020-10-29 07:06:29,972 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8d341b339/0f4560f15bdd4b789178ce570e5eaf91/FLAG78615fe2f [2020-10-29 07:06:30,273 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8d341b339/0f4560f15bdd4b789178ce570e5eaf91 [2020-10-29 07:06:30,281 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:06:30,290 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:06:30,296 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:06:30,296 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:06:30,303 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:06:30,304 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:06:30" (1/1) ... [2020-10-29 07:06:30,308 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d4d9770 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:06:30, skipping insertion in model container [2020-10-29 07:06:30,309 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:06:30" (1/1) ... [2020-10-29 07:06:30,318 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:06:30,474 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:06:32,313 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:06:32,328 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:06:33,174 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:06:33,232 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:06:33,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:06:33 WrapperNode [2020-10-29 07:06:33,234 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:06:33,235 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:06:33,236 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:06:33,236 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:06:33,255 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:06:33" (1/1) ... [2020-10-29 07:06:33,255 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:06:33" (1/1) ... [2020-10-29 07:06:33,333 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:06:33" (1/1) ... [2020-10-29 07:06:33,334 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:06:33" (1/1) ... [2020-10-29 07:06:33,543 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:06:33" (1/1) ... [2020-10-29 07:06:33,590 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:06:33" (1/1) ... [2020-10-29 07:06:33,667 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:06:33" (1/1) ... [2020-10-29 07:06:33,710 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:06:33,714 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:06:33,714 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:06:33,715 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:06:33,716 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:06:33" (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 07:06:33,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:06:33,839 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:06:33,839 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:06:33,840 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:06:33,840 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 07:06:33,841 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 07:06:33,841 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 07:06:33,842 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:06:33,842 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:06:33,842 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 07:06:33,843 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 07:06:33,843 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 07:06:33,844 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:06:33,844 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:06:33,844 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:06:33,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:06:33,845 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:06:33,845 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:06:33,846 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:06:33,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:06:33,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:06:33,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:06:33,846 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:06:33,847 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:06:33,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:06:40,843 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:06:40,843 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:06:40,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:06:40 BoogieIcfgContainer [2020-10-29 07:06:40,848 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:06:40,851 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:06:40,851 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:06:40,856 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:06:40,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:06:30" (1/3) ... [2020-10-29 07:06:40,857 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50f7291e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:06:40, skipping insertion in model container [2020-10-29 07:06:40,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:06:33" (2/3) ... [2020-10-29 07:06:40,858 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50f7291e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:06:40, skipping insertion in model container [2020-10-29 07:06:40,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:06:40" (3/3) ... [2020-10-29 07:06:40,861 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label53.c [2020-10-29 07:06:40,877 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:06:40,885 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:06:40,901 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:06:40,943 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:06:40,943 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:06:40,943 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:06:40,943 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:06:40,943 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:06:40,944 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:06:40,944 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:06:40,944 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:06:40,993 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-29 07:06:41,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-29 07:06:41,003 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:06:41,005 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:06:41,005 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:06:41,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:06:41,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1629092724, now seen corresponding path program 1 times [2020-10-29 07:06:41,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:06:41,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [700814190] [2020-10-29 07:06:41,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:06:41,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:06:41,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:06:42,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:06:42,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 07:06:42,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:06:42,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 742 [2020-10-29 07:06:42,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:06:42,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:06:42,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:06:42,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:06:42,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 07:06:42,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 07:06:42,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:06:42,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:06:42,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:06:42,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:06:42,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:06:42,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:06:42,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-29 07:06:42,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:06:42,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:06:42,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:06:42,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:06:42,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:06:42,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:06:42,322 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 07:06:42,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [700814190] [2020-10-29 07:06:42,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:06:42,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 07:06:42,327 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214682498] [2020-10-29 07:06:42,333 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 07:06:42,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:06:42,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 07:06:42,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 07:06:42,359 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 4 states. [2020-10-29 07:06:55,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:06:55,495 INFO L93 Difference]: Finished difference Result 2492 states and 4754 transitions. [2020-10-29 07:06:55,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:06:55,499 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2020-10-29 07:06:55,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:06:55,546 INFO L225 Difference]: With dead ends: 2492 [2020-10-29 07:06:55,547 INFO L226 Difference]: Without dead ends: 1569 [2020-10-29 07:06:55,569 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 07:06:55,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-10-29 07:06:55,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1565. [2020-10-29 07:06:55,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-10-29 07:06:55,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 2485 transitions. [2020-10-29 07:06:55,757 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 2485 transitions. Word has length 39 [2020-10-29 07:06:55,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:06:55,758 INFO L481 AbstractCegarLoop]: Abstraction has 1565 states and 2485 transitions. [2020-10-29 07:06:55,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 07:06:55,758 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 2485 transitions. [2020-10-29 07:06:55,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-29 07:06:55,764 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:06:55,765 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:06:55,765 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:06:55,766 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:06:55,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:06:55,767 INFO L82 PathProgramCache]: Analyzing trace with hash 420925301, now seen corresponding path program 1 times [2020-10-29 07:06:55,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:06:55,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [50669143] [2020-10-29 07:06:55,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:06:55,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:06:55,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:06:56,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:06:57,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:06:57,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 07:06:57,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:06:57,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1300 [2020-10-29 07:06:57,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:06:57,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:06:57,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:06:57,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:06:57,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-29 07:06:57,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-29 07:06:57,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:06:57,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:06:57,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:06:57,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:06:57,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:06:57,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:06:57,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 07:06:57,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:06:57,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:06:57,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:06:57,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:06:57,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:06:57,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:06:57,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:06:57,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:06:57,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:06:57,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:06:57,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 07:06:57,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:06:57,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-29 07:06:57,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:06:57,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:06:57,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:06:57,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:06:57,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 07:06:57,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:06:57,675 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:06:57,676 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [50669143] [2020-10-29 07:06:57,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:06:57,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:06:57,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418713571] [2020-10-29 07:06:57,680 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:06:57,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:06:57,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:06:57,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:06:57,683 INFO L87 Difference]: Start difference. First operand 1565 states and 2485 transitions. Second operand 7 states. [2020-10-29 07:07:14,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:07:14,637 INFO L93 Difference]: Finished difference Result 4771 states and 7609 transitions. [2020-10-29 07:07:14,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:07:14,640 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 118 [2020-10-29 07:07:14,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:07:14,667 INFO L225 Difference]: With dead ends: 4771 [2020-10-29 07:07:14,667 INFO L226 Difference]: Without dead ends: 3212 [2020-10-29 07:07:14,673 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:07:14,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3212 states. [2020-10-29 07:07:14,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3212 to 3164. [2020-10-29 07:07:14,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3164 states. [2020-10-29 07:07:14,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3164 states to 3164 states and 4587 transitions. [2020-10-29 07:07:14,834 INFO L78 Accepts]: Start accepts. Automaton has 3164 states and 4587 transitions. Word has length 118 [2020-10-29 07:07:14,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:07:14,835 INFO L481 AbstractCegarLoop]: Abstraction has 3164 states and 4587 transitions. [2020-10-29 07:07:14,835 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:07:14,836 INFO L276 IsEmpty]: Start isEmpty. Operand 3164 states and 4587 transitions. [2020-10-29 07:07:14,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-29 07:07:14,839 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:07:14,839 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:07:14,840 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:07:14,840 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:07:14,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:07:14,841 INFO L82 PathProgramCache]: Analyzing trace with hash 1769447653, now seen corresponding path program 1 times [2020-10-29 07:07:14,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:07:14,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [231591775] [2020-10-29 07:07:14,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:07:14,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:07:14,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:07:15,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:07:16,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:07:17,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:07:17,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-29 07:07:17,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:07:17,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2247 [2020-10-29 07:07:17,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:07:17,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:07:17,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:07:17,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:07:17,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-29 07:07:17,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:07:17,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:07:17,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:07:17,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:07:17,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:07:17,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:07:17,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:07:17,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 07:07:17,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:07:17,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:07:17,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:07:17,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:07:17,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:07:17,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:07:17,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:07:17,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:07:17,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:07:17,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:07:17,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-29 07:07:17,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:07:17,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 328 [2020-10-29 07:07:17,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:07:17,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:07:17,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:07:17,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:07:17,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-29 07:07:17,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:07:17,949 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:07:17,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [231591775] [2020-10-29 07:07:17,950 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:07:17,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:07:17,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502042885] [2020-10-29 07:07:17,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:07:17,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:07:17,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:07:17,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:07:17,957 INFO L87 Difference]: Start difference. First operand 3164 states and 4587 transitions. Second operand 7 states. [2020-10-29 07:07:38,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:07:38,392 INFO L93 Difference]: Finished difference Result 9681 states and 14360 transitions. [2020-10-29 07:07:38,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:07:38,400 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 147 [2020-10-29 07:07:38,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:07:38,447 INFO L225 Difference]: With dead ends: 9681 [2020-10-29 07:07:38,448 INFO L226 Difference]: Without dead ends: 6523 [2020-10-29 07:07:38,460 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 07:07:38,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6523 states. [2020-10-29 07:07:38,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6523 to 6461. [2020-10-29 07:07:38,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6461 states. [2020-10-29 07:07:38,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6461 states to 6461 states and 9366 transitions. [2020-10-29 07:07:38,692 INFO L78 Accepts]: Start accepts. Automaton has 6461 states and 9366 transitions. Word has length 147 [2020-10-29 07:07:38,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:07:38,692 INFO L481 AbstractCegarLoop]: Abstraction has 6461 states and 9366 transitions. [2020-10-29 07:07:38,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:07:38,693 INFO L276 IsEmpty]: Start isEmpty. Operand 6461 states and 9366 transitions. [2020-10-29 07:07:38,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-29 07:07:38,696 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:07:38,696 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:07:38,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:07:38,696 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:07:38,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:07:38,697 INFO L82 PathProgramCache]: Analyzing trace with hash 1479155197, now seen corresponding path program 1 times [2020-10-29 07:07:38,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:07:38,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [140497076] [2020-10-29 07:07:38,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:07:38,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:07:38,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:07:39,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:07:40,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:07:40,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:07:40,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-29 07:07:40,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:07:40,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1436 [2020-10-29 07:07:40,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:07:40,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:07:40,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:07:40,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:07:40,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-29 07:07:40,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:07:40,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:07:40,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:07:40,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:07:40,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:07:40,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:07:40,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:07:40,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 07:07:40,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:07:40,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:07:40,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:07:40,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:07:40,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:07:40,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:07:40,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:07:40,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:07:40,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:07:40,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:07:40,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-29 07:07:40,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:07:40,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-29 07:07:40,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:07:40,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:07:40,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:07:40,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:07:40,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-29 07:07:40,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:07:40,748 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:07:40,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [140497076] [2020-10-29 07:07:40,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:07:40,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:07:40,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929487378] [2020-10-29 07:07:40,751 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:07:40,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:07:40,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:07:40,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:07:40,753 INFO L87 Difference]: Start difference. First operand 6461 states and 9366 transitions. Second operand 7 states. [2020-10-29 07:07:59,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:07:59,313 INFO L93 Difference]: Finished difference Result 19959 states and 30220 transitions. [2020-10-29 07:07:59,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:07:59,314 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 159 [2020-10-29 07:07:59,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:07:59,406 INFO L225 Difference]: With dead ends: 19959 [2020-10-29 07:07:59,406 INFO L226 Difference]: Without dead ends: 13504 [2020-10-29 07:07:59,428 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:07:59,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13504 states. [2020-10-29 07:07:59,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13504 to 13246. [2020-10-29 07:07:59,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13246 states. [2020-10-29 07:07:59,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13246 states to 13246 states and 18217 transitions. [2020-10-29 07:07:59,927 INFO L78 Accepts]: Start accepts. Automaton has 13246 states and 18217 transitions. Word has length 159 [2020-10-29 07:07:59,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:07:59,929 INFO L481 AbstractCegarLoop]: Abstraction has 13246 states and 18217 transitions. [2020-10-29 07:07:59,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:07:59,929 INFO L276 IsEmpty]: Start isEmpty. Operand 13246 states and 18217 transitions. [2020-10-29 07:07:59,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-10-29 07:07:59,939 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:07:59,939 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:07:59,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:07:59,940 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:07:59,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:07:59,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1135185886, now seen corresponding path program 1 times [2020-10-29 07:07:59,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:07:59,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [881767483] [2020-10-29 07:07:59,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:08:00,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:08:00,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:00,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:00,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:01,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:02,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:08:02,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-29 07:08:02,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:08:02,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2232 [2020-10-29 07:08:02,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:08:02,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:08:02,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:08:02,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-29 07:08:02,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-29 07:08:02,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:08:02,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:08:02,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:08:02,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:02,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:08:02,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:08:02,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:08:02,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 07:08:02,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:08:02,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:08:02,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:08:02,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:08:02,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:08:02,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:08:02,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:08:02,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:08:02,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:02,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:08:02,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 07:08:02,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:08:02,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-29 07:08:02,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:08:02,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:08:02,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:08:02,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:08:02,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 07:08:02,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-29 07:08:02,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-29 07:08:02,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:08:02,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:02,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:08:02,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-29 07:08:02,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:08:02,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-29 07:08:02,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:08:02,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:08:02,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:08:02,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:08:02,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-29 07:08:02,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:08:03,003 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 134 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:08:03,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [881767483] [2020-10-29 07:08:03,004 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:08:03,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:08:03,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252703434] [2020-10-29 07:08:03,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:08:03,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:08:03,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:08:03,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:08:03,006 INFO L87 Difference]: Start difference. First operand 13246 states and 18217 transitions. Second operand 7 states. [2020-10-29 07:08:26,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:08:26,870 INFO L93 Difference]: Finished difference Result 34188 states and 50915 transitions. [2020-10-29 07:08:26,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:08:26,872 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 234 [2020-10-29 07:08:26,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:08:26,961 INFO L225 Difference]: With dead ends: 34188 [2020-10-29 07:08:26,961 INFO L226 Difference]: Without dead ends: 20948 [2020-10-29 07:08:26,998 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 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 07:08:27,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20948 states. [2020-10-29 07:08:27,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20948 to 20792. [2020-10-29 07:08:27,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20792 states. [2020-10-29 07:08:27,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20792 states to 20792 states and 28209 transitions. [2020-10-29 07:08:27,755 INFO L78 Accepts]: Start accepts. Automaton has 20792 states and 28209 transitions. Word has length 234 [2020-10-29 07:08:27,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:08:27,756 INFO L481 AbstractCegarLoop]: Abstraction has 20792 states and 28209 transitions. [2020-10-29 07:08:27,756 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:08:27,756 INFO L276 IsEmpty]: Start isEmpty. Operand 20792 states and 28209 transitions. [2020-10-29 07:08:27,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-29 07:08:27,762 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:08:27,763 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:08:27,763 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:08:27,763 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:08:27,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:08:27,764 INFO L82 PathProgramCache]: Analyzing trace with hash 1949184848, now seen corresponding path program 1 times [2020-10-29 07:08:27,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:08:27,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [621369572] [2020-10-29 07:08:27,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:08:27,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:08:27,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:27,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:29,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:31,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:32,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:32,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:08:32,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-29 07:08:32,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:08:32,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5081 [2020-10-29 07:08:32,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:08:32,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:08:32,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 07:08:32,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:08:32,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 265 [2020-10-29 07:08:32,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:08:33,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:08:33,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:08:33,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:33,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:08:33,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:08:33,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:08:33,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 07:08:33,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:08:33,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:08:33,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:08:33,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:08:33,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:08:33,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:08:33,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:08:33,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:08:33,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:33,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:33,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:08:33,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-29 07:08:33,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:08:33,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 312 [2020-10-29 07:08:33,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:08:33,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:08:33,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:08:33,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:08:33,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-29 07:08:33,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:08:33,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-10-29 07:08:33,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:08:33,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:33,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:33,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:08:33,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 07:08:33,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:08:33,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-29 07:08:33,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:08:33,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:08:33,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:08:33,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:08:33,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 07:08:33,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:08:33,995 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 27 proven. 100 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 07:08:33,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [621369572] [2020-10-29 07:08:33,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:08:33,996 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 07:08:33,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131956534] [2020-10-29 07:08:33,997 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 07:08:33,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:08:33,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 07:08:33,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-29 07:08:34,000 INFO L87 Difference]: Start difference. First operand 20792 states and 28209 transitions. Second operand 9 states. [2020-10-29 07:08:34,196 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-10-29 07:09:22,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:09:22,948 INFO L93 Difference]: Finished difference Result 69068 states and 102966 transitions. [2020-10-29 07:09:22,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 07:09:22,951 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 260 [2020-10-29 07:09:22,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:09:23,185 INFO L225 Difference]: With dead ends: 69068 [2020-10-29 07:09:23,185 INFO L226 Difference]: Without dead ends: 49053 [2020-10-29 07:09:23,259 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=181, Invalid=575, Unknown=0, NotChecked=0, Total=756 [2020-10-29 07:09:23,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49053 states. [2020-10-29 07:09:24,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49053 to 45836. [2020-10-29 07:09:24,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45836 states. [2020-10-29 07:09:24,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45836 states to 45836 states and 63658 transitions. [2020-10-29 07:09:24,854 INFO L78 Accepts]: Start accepts. Automaton has 45836 states and 63658 transitions. Word has length 260 [2020-10-29 07:09:24,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:09:24,855 INFO L481 AbstractCegarLoop]: Abstraction has 45836 states and 63658 transitions. [2020-10-29 07:09:24,855 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 07:09:24,857 INFO L276 IsEmpty]: Start isEmpty. Operand 45836 states and 63658 transitions. [2020-10-29 07:09:24,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2020-10-29 07:09:24,878 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:09:24,879 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:09:24,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:09:24,880 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:09:24,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:09:24,880 INFO L82 PathProgramCache]: Analyzing trace with hash -81701706, now seen corresponding path program 1 times [2020-10-29 07:09:24,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:09:24,881 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1292332793] [2020-10-29 07:09:24,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:09:24,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:09:25,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:09:25,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:09:26,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:09:27,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:09:29,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:09:29,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 388 [2020-10-29 07:09:29,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:09:29,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 07:09:29,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:09:29,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:09:29,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:09:29,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:09:29,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 343 [2020-10-29 07:09:29,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:09:30,197 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:09:30,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:09:30,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:09:30,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:09:30,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:09:30,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:09:30,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:09:30,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 07:09:30,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:09:30,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:09:30,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:09:30,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:09:30,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:09:30,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:09:30,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:09:30,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:09:30,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:09:30,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:09:30,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:09:30,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-29 07:09:30,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:09:30,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 376 [2020-10-29 07:09:30,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:09:30,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:09:30,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:09:30,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:09:30,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-29 07:09:30,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:09:30,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-29 07:09:30,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:09:30,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:09:31,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:09:31,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-29 07:09:31,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:09:31,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 307 [2020-10-29 07:09:31,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:09:31,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:09:31,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:09:31,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:09:31,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 191 [2020-10-29 07:09:31,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:09:31,482 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 201 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 07:09:31,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1292332793] [2020-10-29 07:09:31,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:09:31,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:09:31,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342494512] [2020-10-29 07:09:31,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:09:31,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:09:31,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:09:31,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:09:31,487 INFO L87 Difference]: Start difference. First operand 45836 states and 63658 transitions. Second operand 7 states. [2020-10-29 07:09:31,678 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 07:09:55,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:09:55,439 INFO L93 Difference]: Finished difference Result 114994 states and 162478 transitions. [2020-10-29 07:09:55,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:09:55,441 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 374 [2020-10-29 07:09:55,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:09:55,740 INFO L225 Difference]: With dead ends: 114994 [2020-10-29 07:09:55,740 INFO L226 Difference]: Without dead ends: 69168 [2020-10-29 07:09:55,851 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:09:55,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69168 states. [2020-10-29 07:09:58,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69168 to 65818. [2020-10-29 07:09:58,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65818 states. [2020-10-29 07:09:59,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65818 states to 65818 states and 86258 transitions. [2020-10-29 07:09:59,014 INFO L78 Accepts]: Start accepts. Automaton has 65818 states and 86258 transitions. Word has length 374 [2020-10-29 07:09:59,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:09:59,015 INFO L481 AbstractCegarLoop]: Abstraction has 65818 states and 86258 transitions. [2020-10-29 07:09:59,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:09:59,015 INFO L276 IsEmpty]: Start isEmpty. Operand 65818 states and 86258 transitions. [2020-10-29 07:09:59,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2020-10-29 07:09:59,049 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:09:59,049 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:09:59,050 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 07:09:59,050 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:09:59,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:09:59,051 INFO L82 PathProgramCache]: Analyzing trace with hash -244113393, now seen corresponding path program 1 times [2020-10-29 07:09:59,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:09:59,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1712521799] [2020-10-29 07:09:59,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:09:59,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:09:59,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:09:59,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:09:59,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:10:00,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:10:00,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:10:01,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:10:04,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:10:04,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 434 [2020-10-29 07:10:04,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 07:10:04,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-29 07:10:04,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:10:04,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:10:04,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 07:10:04,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:10:04,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 425 [2020-10-29 07:10:04,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:10:04,489 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:10:04,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:10:04,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:10:04,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:10:04,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:10:04,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:10:04,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:10:04,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 07:10:04,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:10:04,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:10:04,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:10:04,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:10:04,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:10:04,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:10:04,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:10:04,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:10:04,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:10:04,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:10:04,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 07:10:04,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:10:04,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-29 07:10:04,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:10:04,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:10:04,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:10:04,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:10:04,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 07:10:04,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0