/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=SHALLOWEST --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_label18.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 22:51:21,842 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 22:51:21,846 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 22:51:21,902 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 22:51:21,903 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 22:51:21,904 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 22:51:21,906 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 22:51:21,908 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 22:51:21,911 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 22:51:21,912 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 22:51:21,913 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 22:51:21,914 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 22:51:21,915 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 22:51:21,916 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 22:51:21,917 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 22:51:21,919 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 22:51:21,920 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 22:51:21,921 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 22:51:21,923 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 22:51:21,925 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 22:51:21,927 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 22:51:21,929 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 22:51:21,946 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 22:51:21,947 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 22:51:21,950 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 22:51:21,951 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 22:51:21,951 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 22:51:21,952 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 22:51:21,952 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 22:51:21,954 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 22:51:21,954 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 22:51:21,955 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 22:51:21,956 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 22:51:21,957 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 22:51:21,958 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 22:51:21,958 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 22:51:21,959 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 22:51:21,960 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 22:51:21,960 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 22:51:21,961 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 22:51:21,962 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 22:51:21,964 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 [2020-10-26 22:51:22,014 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 22:51:22,015 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 22:51:22,018 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 22:51:22,019 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 22:51:22,019 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 22:51:22,019 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 22:51:22,019 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 22:51:22,020 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 22:51:22,020 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 22:51:22,021 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 22:51:22,022 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 22:51:22,023 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 22:51:22,023 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 22:51:22,023 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 22:51:22,023 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 22:51:22,024 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 22:51:22,024 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 22:51:22,024 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 22:51:22,024 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 22:51:22,024 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 22:51:22,025 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 22:51:22,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 22:51:22,026 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 22:51:22,026 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 22:51:22,026 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 22:51:22,026 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 22:51:22,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 22:51:22,027 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 22:51:22,027 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 22:51:22,027 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 22:51:22,420 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 22:51:22,453 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 22:51:22,457 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 22:51:22,458 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 22:51:22,459 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 22:51:22,461 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label18.c [2020-10-26 22:51:22,547 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/da066a870/6f29c17cf15144a9844eebe85c96a940/FLAGe8d08509a [2020-10-26 22:51:23,547 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 22:51:23,548 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label18.c [2020-10-26 22:51:23,585 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/da066a870/6f29c17cf15144a9844eebe85c96a940/FLAGe8d08509a [2020-10-26 22:51:24,096 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/da066a870/6f29c17cf15144a9844eebe85c96a940 [2020-10-26 22:51:24,099 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 22:51:24,107 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 22:51:24,110 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 22:51:24,110 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 22:51:24,114 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 22:51:24,114 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:51:24" (1/1) ... [2020-10-26 22:51:24,119 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2aa4103a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:51:24, skipping insertion in model container [2020-10-26 22:51:24,119 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:51:24" (1/1) ... [2020-10-26 22:51:24,128 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 22:51:24,290 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 22:51:25,643 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 22:51:25,654 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 22:51:26,409 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 22:51:26,443 INFO L208 MainTranslator]: Completed translation [2020-10-26 22:51:26,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:51:26 WrapperNode [2020-10-26 22:51:26,444 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 22:51:26,445 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 22:51:26,446 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 22:51:26,446 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 22:51:26,461 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:51:26" (1/1) ... [2020-10-26 22:51:26,463 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:51:26" (1/1) ... [2020-10-26 22:51:26,531 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:51:26" (1/1) ... [2020-10-26 22:51:26,531 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:51:26" (1/1) ... [2020-10-26 22:51:26,669 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:51:26" (1/1) ... [2020-10-26 22:51:26,702 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:51:26" (1/1) ... [2020-10-26 22:51:26,809 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:51:26" (1/1) ... [2020-10-26 22:51:26,855 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 22:51:26,857 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 22:51:26,857 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 22:51:26,857 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 22:51:26,858 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:51:26" (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 [2020-10-26 22:51:26,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 22:51:26,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 22:51:26,937 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 22:51:26,937 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 22:51:26,938 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 22:51:26,938 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-26 22:51:26,938 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-26 22:51:26,938 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 22:51:26,938 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 22:51:26,938 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 22:51:26,939 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-26 22:51:26,939 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-26 22:51:26,939 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 22:51:26,940 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 22:51:26,940 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 22:51:26,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 22:51:26,941 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 22:51:26,941 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 22:51:26,941 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 22:51:26,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 22:51:26,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 22:51:26,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 22:51:26,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 22:51:26,942 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 22:51:26,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 22:51:32,096 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 22:51:32,097 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 22:51:32,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:51:32 BoogieIcfgContainer [2020-10-26 22:51:32,103 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 22:51:32,108 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 22:51:32,108 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 22:51:32,112 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 22:51:32,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 10:51:24" (1/3) ... [2020-10-26 22:51:32,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3415b7bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:51:32, skipping insertion in model container [2020-10-26 22:51:32,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:51:26" (2/3) ... [2020-10-26 22:51:32,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3415b7bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:51:32, skipping insertion in model container [2020-10-26 22:51:32,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:51:32" (3/3) ... [2020-10-26 22:51:32,117 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label18.c [2020-10-26 22:51:32,130 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 22:51:32,137 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 22:51:32,152 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 22:51:32,200 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 22:51:32,201 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 22:51:32,201 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 22:51:32,201 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 22:51:32,201 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 22:51:32,201 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 22:51:32,201 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 22:51:32,202 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 22:51:32,307 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-26 22:51:32,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-26 22:51:32,318 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:51:32,319 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:51:32,320 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:51:32,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:51:32,328 INFO L82 PathProgramCache]: Analyzing trace with hash 174221132, now seen corresponding path program 1 times [2020-10-26 22:51:32,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:51:32,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [406223128] [2020-10-26 22:51:32,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:51:32,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:51:32,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:51:33,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:51:33,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-26 22:51:33,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:51:33,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 559 [2020-10-26 22:51:33,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:51:33,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:51:33,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:51:33,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-26 22:51:33,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 22:51:33,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:51:33,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:51:33,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:51:33,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:51:33,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:51:33,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:51:33,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 22:51:33,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:51:33,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:51:33,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:51:33,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:51:33,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:51:33,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:51:33,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [406223128] [2020-10-26 22:51:33,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:51:33,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 22:51:33,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702582337] [2020-10-26 22:51:33,361 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 22:51:33,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:51:33,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 22:51:33,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 22:51:33,386 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 4 states. [2020-10-26 22:51:44,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:51:44,173 INFO L93 Difference]: Finished difference Result 2476 states and 4741 transitions. [2020-10-26 22:51:44,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 22:51:44,179 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-10-26 22:51:44,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:51:44,210 INFO L225 Difference]: With dead ends: 2476 [2020-10-26 22:51:44,210 INFO L226 Difference]: Without dead ends: 1569 [2020-10-26 22:51:44,222 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 [2020-10-26 22:51:44,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-10-26 22:51:44,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1556. [2020-10-26 22:51:44,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1556 states. [2020-10-26 22:51:44,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1556 states to 1556 states and 2404 transitions. [2020-10-26 22:51:44,389 INFO L78 Accepts]: Start accepts. Automaton has 1556 states and 2404 transitions. Word has length 60 [2020-10-26 22:51:44,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:51:44,390 INFO L481 AbstractCegarLoop]: Abstraction has 1556 states and 2404 transitions. [2020-10-26 22:51:44,390 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 22:51:44,390 INFO L276 IsEmpty]: Start isEmpty. Operand 1556 states and 2404 transitions. [2020-10-26 22:51:44,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-26 22:51:44,399 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:51:44,400 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:51:44,400 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 22:51:44,400 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:51:44,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:51:44,401 INFO L82 PathProgramCache]: Analyzing trace with hash -816694262, now seen corresponding path program 1 times [2020-10-26 22:51:44,401 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:51:44,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1306798245] [2020-10-26 22:51:44,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:51:44,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:51:44,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:51:44,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:51:44,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:51:45,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:51:45,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-26 22:51:45,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:51:45,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1526 [2020-10-26 22:51:45,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:51:45,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 22:51:45,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:51:45,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-26 22:51:45,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 22:51:46,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:51:46,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:51:46,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:51:46,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:51:46,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:51:46,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:51:46,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 22:51:46,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:51:46,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:51:46,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:51:46,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:51:46,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-26 22:51:46,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:51:46,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:51:46,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:51:46,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:51:46,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-26 22:51:46,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:51:46,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-26 22:51:46,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:51:46,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:51:46,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:51:46,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 22:51:46,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:51:46,455 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 22:51:46,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1306798245] [2020-10-26 22:51:46,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:51:46,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 22:51:46,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514726209] [2020-10-26 22:51:46,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 22:51:46,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:51:46,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 22:51:46,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-26 22:51:46,460 INFO L87 Difference]: Start difference. First operand 1556 states and 2404 transitions. Second operand 6 states. [2020-10-26 22:51:58,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:51:58,504 INFO L93 Difference]: Finished difference Result 4721 states and 7349 transitions. [2020-10-26 22:51:58,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 22:51:58,506 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 135 [2020-10-26 22:51:58,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:51:58,531 INFO L225 Difference]: With dead ends: 4721 [2020-10-26 22:51:58,531 INFO L226 Difference]: Without dead ends: 3171 [2020-10-26 22:51:58,536 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-26 22:51:58,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3171 states. [2020-10-26 22:51:58,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3171 to 3150. [2020-10-26 22:51:58,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3150 states. [2020-10-26 22:51:58,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3150 states to 3150 states and 4314 transitions. [2020-10-26 22:51:58,662 INFO L78 Accepts]: Start accepts. Automaton has 3150 states and 4314 transitions. Word has length 135 [2020-10-26 22:51:58,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:51:58,663 INFO L481 AbstractCegarLoop]: Abstraction has 3150 states and 4314 transitions. [2020-10-26 22:51:58,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 22:51:58,664 INFO L276 IsEmpty]: Start isEmpty. Operand 3150 states and 4314 transitions. [2020-10-26 22:51:58,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-26 22:51:58,667 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:51:58,668 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:51:58,668 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 22:51:58,668 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:51:58,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:51:58,669 INFO L82 PathProgramCache]: Analyzing trace with hash 426561854, now seen corresponding path program 1 times [2020-10-26 22:51:58,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:51:58,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1857444190] [2020-10-26 22:51:58,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:51:58,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:51:58,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:51:59,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:51:59,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:51:59,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-26 22:51:59,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:51:59,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 995 [2020-10-26 22:51:59,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:51:59,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:51:59,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:51:59,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-26 22:51:59,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:51:59,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:51:59,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:51:59,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:51:59,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:51:59,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:51:59,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:51:59,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 22:51:59,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:51:59,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:51:59,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:51:59,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:51:59,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:51:59,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:51:59,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:51:59,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:52:00,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:52:00,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 22:52:00,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:52:00,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-26 22:52:00,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:52:00,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:52:00,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:52:00,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-26 22:52:00,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:52:00,258 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:52:00,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1857444190] [2020-10-26 22:52:00,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:52:00,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 22:52:00,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428471562] [2020-10-26 22:52:00,262 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:52:00,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:52:00,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:52:00,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:52:00,264 INFO L87 Difference]: Start difference. First operand 3150 states and 4314 transitions. Second operand 7 states. [2020-10-26 22:52:14,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:52:14,606 INFO L93 Difference]: Finished difference Result 9623 states and 13422 transitions. [2020-10-26 22:52:14,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 22:52:14,607 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 141 [2020-10-26 22:52:14,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:52:14,646 INFO L225 Difference]: With dead ends: 9623 [2020-10-26 22:52:14,647 INFO L226 Difference]: Without dead ends: 6479 [2020-10-26 22:52:14,658 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 22:52:14,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6479 states. [2020-10-26 22:52:14,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6479 to 6425. [2020-10-26 22:52:14,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6425 states. [2020-10-26 22:52:14,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6425 states to 6425 states and 8301 transitions. [2020-10-26 22:52:14,855 INFO L78 Accepts]: Start accepts. Automaton has 6425 states and 8301 transitions. Word has length 141 [2020-10-26 22:52:14,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:52:14,856 INFO L481 AbstractCegarLoop]: Abstraction has 6425 states and 8301 transitions. [2020-10-26 22:52:14,856 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:52:14,856 INFO L276 IsEmpty]: Start isEmpty. Operand 6425 states and 8301 transitions. [2020-10-26 22:52:14,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-26 22:52:14,859 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:52:14,859 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:52:14,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 22:52:14,860 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:52:14,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:52:14,860 INFO L82 PathProgramCache]: Analyzing trace with hash -468626250, now seen corresponding path program 1 times [2020-10-26 22:52:14,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:52:14,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [702576565] [2020-10-26 22:52:14,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:52:14,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:52:14,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:52:15,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:52:15,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:52:15,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-26 22:52:15,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:52:15,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 950 [2020-10-26 22:52:15,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:52:15,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:52:15,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:52:15,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-26 22:52:15,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:52:15,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:52:15,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:52:15,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:52:16,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:52:16,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:52:16,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:52:16,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 22:52:16,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:52:16,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:52:16,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:52:16,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:52:16,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:52:16,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:52:16,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:52:16,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:52:16,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:52:16,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-26 22:52:16,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:52:16,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-26 22:52:16,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:52:16,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:52:16,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:52:16,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-26 22:52:16,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:52:16,263 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:52:16,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [702576565] [2020-10-26 22:52:16,264 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:52:16,264 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 22:52:16,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527712976] [2020-10-26 22:52:16,266 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:52:16,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:52:16,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:52:16,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:52:16,272 INFO L87 Difference]: Start difference. First operand 6425 states and 8301 transitions. Second operand 7 states. [2020-10-26 22:52:29,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:52:29,715 INFO L93 Difference]: Finished difference Result 19637 states and 26039 transitions. [2020-10-26 22:52:29,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 22:52:29,723 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 145 [2020-10-26 22:52:29,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:52:29,794 INFO L225 Difference]: With dead ends: 19637 [2020-10-26 22:52:29,794 INFO L226 Difference]: Without dead ends: 13218 [2020-10-26 22:52:29,814 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 [2020-10-26 22:52:29,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13218 states. [2020-10-26 22:52:30,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13218 to 11536. [2020-10-26 22:52:30,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11536 states. [2020-10-26 22:52:30,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11536 states to 11536 states and 14612 transitions. [2020-10-26 22:52:30,174 INFO L78 Accepts]: Start accepts. Automaton has 11536 states and 14612 transitions. Word has length 145 [2020-10-26 22:52:30,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:52:30,174 INFO L481 AbstractCegarLoop]: Abstraction has 11536 states and 14612 transitions. [2020-10-26 22:52:30,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:52:30,174 INFO L276 IsEmpty]: Start isEmpty. Operand 11536 states and 14612 transitions. [2020-10-26 22:52:30,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-10-26 22:52:30,179 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:52:30,179 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:52:30,180 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 22:52:30,180 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:52:30,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:52:30,180 INFO L82 PathProgramCache]: Analyzing trace with hash 417009700, now seen corresponding path program 1 times [2020-10-26 22:52:30,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:52:30,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1761616728] [2020-10-26 22:52:30,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:52:30,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:52:30,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:52:30,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:52:32,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:52:32,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-26 22:52:32,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:52:32,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1885 [2020-10-26 22:52:32,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:52:32,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:52:32,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:52:32,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 22:52:32,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:52:32,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:52:32,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:52:32,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:52:32,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:52:32,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:52:32,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:52:32,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 22:52:32,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:52:32,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:52:32,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:52:32,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:52:32,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:52:32,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:52:32,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:52:32,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:52:32,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:52:32,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-26 22:52:32,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:52:32,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-10-26 22:52:32,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:52:32,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:52:32,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:52:32,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-26 22:52:32,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:52:33,115 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:52:33,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1761616728] [2020-10-26 22:52:33,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:52:33,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 22:52:33,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681147799] [2020-10-26 22:52:33,117 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:52:33,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:52:33,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:52:33,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:52:33,118 INFO L87 Difference]: Start difference. First operand 11536 states and 14612 transitions. Second operand 7 states. [2020-10-26 22:52:46,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:52:46,767 INFO L93 Difference]: Finished difference Result 28291 states and 35574 transitions. [2020-10-26 22:52:46,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 22:52:46,773 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 208 [2020-10-26 22:52:46,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:52:46,849 INFO L225 Difference]: With dead ends: 28291 [2020-10-26 22:52:46,849 INFO L226 Difference]: Without dead ends: 16761 [2020-10-26 22:52:46,874 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 22:52:46,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16761 states. [2020-10-26 22:52:47,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16761 to 16492. [2020-10-26 22:52:47,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16492 states. [2020-10-26 22:52:47,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16492 states to 16492 states and 20249 transitions. [2020-10-26 22:52:47,296 INFO L78 Accepts]: Start accepts. Automaton has 16492 states and 20249 transitions. Word has length 208 [2020-10-26 22:52:47,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:52:47,298 INFO L481 AbstractCegarLoop]: Abstraction has 16492 states and 20249 transitions. [2020-10-26 22:52:47,298 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:52:47,298 INFO L276 IsEmpty]: Start isEmpty. Operand 16492 states and 20249 transitions. [2020-10-26 22:52:47,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-26 22:52:47,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:52:47,304 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-26 22:52:47,305 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 22:52:47,305 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:52:47,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:52:47,305 INFO L82 PathProgramCache]: Analyzing trace with hash 544855040, now seen corresponding path program 1 times [2020-10-26 22:52:47,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:52:47,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1991098193] [2020-10-26 22:52:47,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:52:47,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:52:47,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:52:47,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:52:48,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:52:48,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:52:48,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-10-26 22:52:48,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:52:48,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1442 [2020-10-26 22:52:48,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:52:48,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:52:48,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-26 22:52:48,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-26 22:52:48,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:52:48,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:52:48,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:52:48,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:52:48,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:52:48,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:52:48,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:52:48,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 22:52:48,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:52:48,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:52:48,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:52:48,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:52:48,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:52:48,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:52:49,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:52:49,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:52:49,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:52:49,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-26 22:52:49,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:52:49,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-26 22:52:49,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:52:49,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:52:49,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:52:49,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-26 22:52:49,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:52:49,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-26 22:52:49,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:52:49,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:52:49,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:52:49,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-26 22:52:49,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:52:49,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-26 22:52:49,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:52:49,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:52:49,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:52:49,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-26 22:52:49,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:52:49,475 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 176 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 22:52:49,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1991098193] [2020-10-26 22:52:49,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:52:49,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:52:49,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90489558] [2020-10-26 22:52:49,477 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:52:49,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:52:49,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:52:49,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:52:49,479 INFO L87 Difference]: Start difference. First operand 16492 states and 20249 transitions. Second operand 7 states. [2020-10-26 22:53:05,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:53:05,849 INFO L93 Difference]: Finished difference Result 40086 states and 51266 transitions. [2020-10-26 22:53:05,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:53:05,851 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 248 [2020-10-26 22:53:05,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:53:05,916 INFO L225 Difference]: With dead ends: 40086 [2020-10-26 22:53:05,917 INFO L226 Difference]: Without dead ends: 21100 [2020-10-26 22:53:05,957 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:53:05,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21100 states. [2020-10-26 22:53:06,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21100 to 20556. [2020-10-26 22:53:06,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20556 states. [2020-10-26 22:53:06,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20556 states to 20556 states and 24373 transitions. [2020-10-26 22:53:06,410 INFO L78 Accepts]: Start accepts. Automaton has 20556 states and 24373 transitions. Word has length 248 [2020-10-26 22:53:06,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:53:06,410 INFO L481 AbstractCegarLoop]: Abstraction has 20556 states and 24373 transitions. [2020-10-26 22:53:06,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:53:06,410 INFO L276 IsEmpty]: Start isEmpty. Operand 20556 states and 24373 transitions. [2020-10-26 22:53:06,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2020-10-26 22:53:06,415 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:53:06,415 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:53:06,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 22:53:06,416 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:53:06,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:53:06,416 INFO L82 PathProgramCache]: Analyzing trace with hash 755969880, now seen corresponding path program 1 times [2020-10-26 22:53:06,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:53:06,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [956254406] [2020-10-26 22:53:06,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:53:06,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:53:06,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:53:06,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:53:06,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:53:08,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:53:08,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:53:08,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 294 [2020-10-26 22:53:08,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 22:53:08,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2497 [2020-10-26 22:53:08,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:53:08,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:53:08,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-26 22:53:08,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-26 22:53:08,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:53:09,230 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-26 22:53:09,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:53:09,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:53:09,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:53:09,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:53:09,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:53:09,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:53:09,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 22:53:09,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:53:09,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:53:09,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:53:09,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:53:09,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:53:09,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:53:09,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:53:09,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:53:09,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:53:09,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-26 22:53:09,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:53:09,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-26 22:53:09,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:53:09,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:53:09,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:53:09,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-26 22:53:09,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:53:09,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-26 22:53:09,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:53:09,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:53:09,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:53:09,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:53:09,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-26 22:53:09,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:53:09,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-26 22:53:09,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:53:09,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:53:09,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:53:09,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 22:53:09,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:53:09,817 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 122 proven. 52 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 22:53:09,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [956254406] [2020-10-26 22:53:09,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:53:09,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 22:53:09,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866600603] [2020-10-26 22:53:09,820 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 22:53:09,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:53:09,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 22:53:09,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-26 22:53:09,822 INFO L87 Difference]: Start difference. First operand 20556 states and 24373 transitions. Second operand 6 states. [2020-10-26 22:53:25,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:53:25,888 INFO L93 Difference]: Finished difference Result 52068 states and 64007 transitions. [2020-10-26 22:53:25,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 22:53:25,889 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 280 [2020-10-26 22:53:25,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:53:25,989 INFO L225 Difference]: With dead ends: 52068 [2020-10-26 22:53:25,990 INFO L226 Difference]: Without dead ends: 30658 [2020-10-26 22:53:26,031 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-26 22:53:26,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30658 states. [2020-10-26 22:53:26,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30658 to 30450. [2020-10-26 22:53:26,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30450 states. [2020-10-26 22:53:26,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30450 states to 30450 states and 36753 transitions. [2020-10-26 22:53:26,719 INFO L78 Accepts]: Start accepts. Automaton has 30450 states and 36753 transitions. Word has length 280 [2020-10-26 22:53:26,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:53:26,720 INFO L481 AbstractCegarLoop]: Abstraction has 30450 states and 36753 transitions. [2020-10-26 22:53:26,720 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 22:53:26,720 INFO L276 IsEmpty]: Start isEmpty. Operand 30450 states and 36753 transitions. [2020-10-26 22:53:26,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2020-10-26 22:53:26,725 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:53:26,726 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:53:26,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 22:53:26,726 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:53:26,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:53:26,727 INFO L82 PathProgramCache]: Analyzing trace with hash -1710621052, now seen corresponding path program 1 times [2020-10-26 22:53:26,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:53:26,727 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [301471752] [2020-10-26 22:53:26,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:53:26,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:53:26,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:53:26,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:53:28,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:53:29,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:53:29,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 312 [2020-10-26 22:53:29,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:53:29,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2240 [2020-10-26 22:53:29,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:53:29,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:53:29,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-26 22:53:29,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-26 22:53:29,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:53:29,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:53:29,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:53:29,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:53:29,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:53:29,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:53:29,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:53:29,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 22:53:29,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:53:29,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:53:29,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:53:29,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:53:29,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:53:29,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:53:29,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:53:29,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:53:29,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:53:29,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-26 22:53:29,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:53:29,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-26 22:53:29,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:53:29,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:53:29,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:53:29,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-26 22:53:29,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:53:29,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-26 22:53:29,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:53:29,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:53:29,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:53:29,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:53:29,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-26 22:53:29,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:53:29,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-26 22:53:29,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:53:29,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:53:29,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:53:29,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-26 22:53:29,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:53:30,099 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 136 proven. 52 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 22:53:30,100 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [301471752] [2020-10-26 22:53:30,100 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:53:30,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:53:30,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913730879] [2020-10-26 22:53:30,101 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:53:30,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:53:30,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:53:30,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:53:30,102 INFO L87 Difference]: Start difference. First operand 30450 states and 36753 transitions. Second operand 7 states. [2020-10-26 22:53:54,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:53:54,200 INFO L93 Difference]: Finished difference Result 97278 states and 124737 transitions. [2020-10-26 22:53:54,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 22:53:54,202 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 298 [2020-10-26 22:53:54,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:53:54,453 INFO L225 Difference]: With dead ends: 97278 [2020-10-26 22:53:54,454 INFO L226 Difference]: Without dead ends: 65144 [2020-10-26 22:53:54,521 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-10-26 22:53:54,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65144 states. [2020-10-26 22:53:56,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65144 to 64311. [2020-10-26 22:53:56,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64311 states. [2020-10-26 22:53:56,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64311 states to 64311 states and 82037 transitions. [2020-10-26 22:53:56,778 INFO L78 Accepts]: Start accepts. Automaton has 64311 states and 82037 transitions. Word has length 298 [2020-10-26 22:53:56,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:53:56,779 INFO L481 AbstractCegarLoop]: Abstraction has 64311 states and 82037 transitions. [2020-10-26 22:53:56,779 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:53:56,779 INFO L276 IsEmpty]: Start isEmpty. Operand 64311 states and 82037 transitions. [2020-10-26 22:53:56,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2020-10-26 22:53:56,789 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:53:56,789 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 22:53:56,790 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 22:53:56,790 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:53:56,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:53:56,791 INFO L82 PathProgramCache]: Analyzing trace with hash 254294950, now seen corresponding path program 1 times [2020-10-26 22:53:56,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:53:56,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [375797248] [2020-10-26 22:53:56,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:53:56,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:53:57,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:53:57,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:53:57,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 359 [2020-10-26 22:53:57,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:53:57,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 784 [2020-10-26 22:53:57,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:53:57,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:53:57,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 297 [2020-10-26 22:53:57,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-26 22:53:57,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:53:57,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:53:57,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:53:57,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:53:57,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:53:57,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:53:57,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:53:57,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 22:53:57,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:53:57,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:53:57,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:53:57,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:53:57,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:53:57,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:53:57,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:53:57,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:53:57,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:53:57,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-26 22:53:57,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:53:57,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-26 22:53:57,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:53:57,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:53:57,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:53:57,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:53:57,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:53:58,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-26 22:53:58,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:53:58,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:53:58,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:53:58,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-26 22:53:58,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:53:58,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-26 22:53:58,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:53:58,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:53:58,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:53:58,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-26 22:53:58,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:53:58,399 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 105 proven. 2 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2020-10-26 22:53:58,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [375797248] [2020-10-26 22:53:58,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:53:58,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 22:53:58,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371729293] [2020-10-26 22:53:58,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 22:53:58,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:53:58,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 22:53:58,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 22:53:58,409 INFO L87 Difference]: Start difference. First operand 64311 states and 82037 transitions. Second operand 5 states. [2020-10-26 22:54:13,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:54:13,217 INFO L93 Difference]: Finished difference Result 154921 states and 206530 transitions. [2020-10-26 22:54:13,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 22:54:13,219 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 345 [2020-10-26 22:54:13,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:54:13,726 INFO L225 Difference]: With dead ends: 154921 [2020-10-26 22:54:13,727 INFO L226 Difference]: Without dead ends: 90616 [2020-10-26 22:54:13,850 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 22:54:14,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90616 states. [2020-10-26 22:54:16,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90616 to 90593. [2020-10-26 22:54:16,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90593 states. [2020-10-26 22:54:16,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90593 states to 90593 states and 113690 transitions. [2020-10-26 22:54:16,382 INFO L78 Accepts]: Start accepts. Automaton has 90593 states and 113690 transitions. Word has length 345 [2020-10-26 22:54:16,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:54:16,383 INFO L481 AbstractCegarLoop]: Abstraction has 90593 states and 113690 transitions. [2020-10-26 22:54:16,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 22:54:16,383 INFO L276 IsEmpty]: Start isEmpty. Operand 90593 states and 113690 transitions. [2020-10-26 22:54:16,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2020-10-26 22:54:16,395 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:54:16,395 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 22:54:16,396 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 22:54:16,396 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:54:16,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:54:16,396 INFO L82 PathProgramCache]: Analyzing trace with hash -1719442282, now seen corresponding path program 1 times [2020-10-26 22:54:16,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:54:16,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1161736462] [2020-10-26 22:54:16,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:54:16,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:54:16,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:54:16,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:54:19,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:54:19,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 367 [2020-10-26 22:54:19,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:54:19,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2389 [2020-10-26 22:54:19,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:54:19,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:54:19,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-26 22:54:19,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-26 22:54:19,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:54:19,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:54:19,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:54:19,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:54:19,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:54:19,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:54:19,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:54:19,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 22:54:19,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:54:19,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:54:19,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:54:19,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:54:19,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:54:19,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:54:19,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:54:19,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:54:19,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:54:19,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-26 22:54:19,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:54:19,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-26 22:54:19,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:54:19,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:54:19,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:54:19,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-26 22:54:19,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:54:19,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-26 22:54:19,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:54:19,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:54:19,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:54:19,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-26 22:54:19,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:54:19,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-26 22:54:19,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:54:19,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:54:19,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:54:19,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-26 22:54:19,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:54:20,037 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 246 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 22:54:20,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1161736462] [2020-10-26 22:54:20,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:54:20,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:54:20,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113189517] [2020-10-26 22:54:20,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:54:20,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:54:20,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:54:20,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:54:20,040 INFO L87 Difference]: Start difference. First operand 90593 states and 113690 transitions. Second operand 7 states. [2020-10-26 22:54:40,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:54:40,208 INFO L93 Difference]: Finished difference Result 188625 states and 237797 transitions. [2020-10-26 22:54:40,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 22:54:40,209 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 353 [2020-10-26 22:54:40,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:54:40,780 INFO L225 Difference]: With dead ends: 188625 [2020-10-26 22:54:40,781 INFO L226 Difference]: Without dead ends: 98038 [2020-10-26 22:54:40,914 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-26 22:54:41,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98038 states. [2020-10-26 22:54:42,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98038 to 97911. [2020-10-26 22:54:42,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97911 states. [2020-10-26 22:54:43,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97911 states to 97911 states and 121880 transitions. [2020-10-26 22:54:43,044 INFO L78 Accepts]: Start accepts. Automaton has 97911 states and 121880 transitions. Word has length 353 [2020-10-26 22:54:43,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:54:43,045 INFO L481 AbstractCegarLoop]: Abstraction has 97911 states and 121880 transitions. [2020-10-26 22:54:43,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:54:43,045 INFO L276 IsEmpty]: Start isEmpty. Operand 97911 states and 121880 transitions. [2020-10-26 22:54:43,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2020-10-26 22:54:43,049 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:54:43,049 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 22:54:43,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 22:54:43,049 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:54:43,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:54:43,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1559493646, now seen corresponding path program 1 times [2020-10-26 22:54:43,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:54:43,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1519308589] [2020-10-26 22:54:43,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:54:43,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:54:43,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:54:43,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:54:45,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:54:45,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 371 [2020-10-26 22:54:45,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:54:45,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2101 [2020-10-26 22:54:45,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:54:45,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:54:45,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-26 22:54:45,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-26 22:54:45,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:54:45,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:54:45,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:54:45,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:54:45,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:54:45,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:54:45,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:54:45,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 22:54:45,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:54:45,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:54:45,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:54:45,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:54:45,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:54:45,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:54:45,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:54:45,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:54:45,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:54:45,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-26 22:54:45,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:54:45,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-26 22:54:45,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:54:45,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:54:45,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:54:45,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-26 22:54:45,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:54:45,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-26 22:54:45,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:54:45,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:54:45,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:54:45,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-26 22:54:45,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:54:45,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-26 22:54:45,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:54:45,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:54:45,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:54:45,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-26 22:54:45,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:54:46,371 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 249 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 22:54:46,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1519308589] [2020-10-26 22:54:46,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:54:46,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:54:46,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229563007] [2020-10-26 22:54:46,381 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:54:46,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:54:46,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:54:46,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:54:46,382 INFO L87 Difference]: Start difference. First operand 97911 states and 121880 transitions. Second operand 7 states. [2020-10-26 22:54:47,816 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-26 22:54:58,615 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 69