/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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/Problem03_label04.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 10:11:53,937 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 10:11:53,941 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 10:11:53,983 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 10:11:53,984 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 10:11:53,985 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 10:11:53,987 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 10:11:53,989 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 10:11:53,991 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 10:11:53,992 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 10:11:53,994 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 10:11:53,995 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 10:11:53,996 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 10:11:53,997 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 10:11:53,998 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 10:11:54,000 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 10:11:54,001 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 10:11:54,002 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 10:11:54,004 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 10:11:54,006 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 10:11:54,008 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 10:11:54,010 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 10:11:54,012 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 10:11:54,013 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 10:11:54,016 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 10:11:54,016 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 10:11:54,017 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 10:11:54,018 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 10:11:54,018 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 10:11:54,019 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 10:11:54,020 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 10:11:54,021 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 10:11:54,022 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 10:11:54,023 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 10:11:54,024 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 10:11:54,024 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 10:11:54,025 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 10:11:54,025 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 10:11:54,026 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 10:11:54,027 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 10:11:54,027 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 10:11:54,028 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 [2020-10-28 10:11:54,057 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 10:11:54,058 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 10:11:54,059 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 10:11:54,060 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 10:11:54,060 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 10:11:54,060 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 10:11:54,060 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 10:11:54,061 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 10:11:54,061 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 10:11:54,061 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 10:11:54,061 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 10:11:54,062 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 10:11:54,062 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 10:11:54,062 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 10:11:54,062 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 10:11:54,062 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 10:11:54,063 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 10:11:54,063 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 10:11:54,063 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 10:11:54,063 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 10:11:54,063 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 10:11:54,064 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 10:11:54,064 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 10:11:54,064 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 10:11:54,064 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 10:11:54,064 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 10:11:54,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 10:11:54,065 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 10:11:54,065 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 10:11:54,065 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 10:11:54,452 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 10:11:54,476 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 10:11:54,479 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 10:11:54,481 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 10:11:54,483 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 10:11:54,484 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label04.c [2020-10-28 10:11:54,565 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ea8ac81f7/02504f0f1e8848298ec651fed0177eb7/FLAGc6d04d758 [2020-10-28 10:11:55,405 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 10:11:55,406 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label04.c [2020-10-28 10:11:55,427 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ea8ac81f7/02504f0f1e8848298ec651fed0177eb7/FLAGc6d04d758 [2020-10-28 10:11:55,554 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ea8ac81f7/02504f0f1e8848298ec651fed0177eb7 [2020-10-28 10:11:55,559 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 10:11:55,568 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 10:11:55,570 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 10:11:55,571 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 10:11:55,576 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 10:11:55,576 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:11:55" (1/1) ... [2020-10-28 10:11:55,584 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ab55c27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:11:55, skipping insertion in model container [2020-10-28 10:11:55,584 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:11:55" (1/1) ... [2020-10-28 10:11:55,592 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 10:11:55,657 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 10:11:56,328 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 10:11:56,345 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 10:11:56,615 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 10:11:56,640 INFO L208 MainTranslator]: Completed translation [2020-10-28 10:11:56,641 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:11:56 WrapperNode [2020-10-28 10:11:56,641 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 10:11:56,642 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 10:11:56,643 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 10:11:56,643 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 10:11:56,656 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:11:56" (1/1) ... [2020-10-28 10:11:56,659 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:11:56" (1/1) ... [2020-10-28 10:11:56,704 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:11:56" (1/1) ... [2020-10-28 10:11:56,704 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:11:56" (1/1) ... [2020-10-28 10:11:56,808 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:11:56" (1/1) ... [2020-10-28 10:11:56,838 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:11:56" (1/1) ... [2020-10-28 10:11:56,857 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:11:56" (1/1) ... [2020-10-28 10:11:56,874 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 10:11:56,877 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 10:11:56,877 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 10:11:56,877 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 10:11:56,878 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:11:56" (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 [2020-10-28 10:11:56,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 10:11:56,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 10:11:56,954 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 10:11:56,954 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 10:11:56,954 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 10:11:56,954 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 10:11:56,954 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 10:11:56,955 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 10:11:56,955 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 10:11:56,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 10:11:56,955 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 10:11:56,955 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 10:11:56,956 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 10:11:56,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 10:11:56,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 10:11:56,956 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 10:11:56,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 10:11:56,956 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 10:11:56,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 10:11:58,874 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 10:11:58,874 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 10:11:58,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:11:58 BoogieIcfgContainer [2020-10-28 10:11:58,876 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 10:11:58,878 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 10:11:58,879 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 10:11:58,882 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 10:11:58,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 10:11:55" (1/3) ... [2020-10-28 10:11:58,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34f85937 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:11:58, skipping insertion in model container [2020-10-28 10:11:58,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:11:56" (2/3) ... [2020-10-28 10:11:58,884 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34f85937 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:11:58, skipping insertion in model container [2020-10-28 10:11:58,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:11:58" (3/3) ... [2020-10-28 10:11:58,885 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label04.c [2020-10-28 10:11:58,897 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 10:11:58,903 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 10:11:58,916 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 10:11:58,969 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 10:11:58,969 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 10:11:58,970 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 10:11:58,970 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 10:11:58,970 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 10:11:58,970 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 10:11:58,970 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 10:11:58,971 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 10:11:58,995 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states. [2020-10-28 10:11:59,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-10-28 10:11:59,015 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:11:59,016 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:11:59,016 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:11:59,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:11:59,023 INFO L82 PathProgramCache]: Analyzing trace with hash 1151043804, now seen corresponding path program 1 times [2020-10-28 10:11:59,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:11:59,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [542862777] [2020-10-28 10:11:59,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:11:59,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:11:59,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:12:00,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:12:04,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:12:04,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-10-28 10:12:04,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:12:04,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4594 [2020-10-28 10:12:04,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:12:04,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:12:04,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:12:04,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:12:04,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-28 10:12:04,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 10:12:04,535 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:12:04,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:12:04,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:12:04,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:12:04,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:12:04,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:12:04,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:12:04,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 10:12:04,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:12:04,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:12:04,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:12:04,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:12:04,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:12:04,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:12:04,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:12:04,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [542862777] [2020-10-28 10:12:04,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:12:04,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 10:12:04,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202917823] [2020-10-28 10:12:04,790 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 10:12:04,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:12:04,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 10:12:04,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 10:12:04,813 INFO L87 Difference]: Start difference. First operand 315 states. Second operand 4 states. [2020-10-28 10:12:05,067 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:12:08,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:12:08,295 INFO L93 Difference]: Finished difference Result 889 states and 1542 transitions. [2020-10-28 10:12:08,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 10:12:08,297 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 205 [2020-10-28 10:12:08,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:12:08,317 INFO L225 Difference]: With dead ends: 889 [2020-10-28 10:12:08,317 INFO L226 Difference]: Without dead ends: 481 [2020-10-28 10:12:08,325 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:12:08,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2020-10-28 10:12:08,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 476. [2020-10-28 10:12:08,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 476 states. [2020-10-28 10:12:08,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 729 transitions. [2020-10-28 10:12:08,419 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 729 transitions. Word has length 205 [2020-10-28 10:12:08,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:12:08,421 INFO L481 AbstractCegarLoop]: Abstraction has 476 states and 729 transitions. [2020-10-28 10:12:08,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 10:12:08,421 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 729 transitions. [2020-10-28 10:12:08,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-28 10:12:08,429 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:12:08,430 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:12:08,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 10:12:08,430 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:12:08,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:12:08,431 INFO L82 PathProgramCache]: Analyzing trace with hash 729986635, now seen corresponding path program 1 times [2020-10-28 10:12:08,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:12:08,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1943173614] [2020-10-28 10:12:08,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:12:08,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:12:08,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:12:09,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:12:10,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:12:11,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:12:12,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:12:12,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-28 10:12:12,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 10:12:12,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3726 [2020-10-28 10:12:12,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:12:12,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:12:12,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:12:12,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 10:12:12,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-28 10:12:12,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 10:12:12,615 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:12:12,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:12:12,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:12:12,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:12:12,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:12:12,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:12:12,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:12:12,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 10:12:12,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:12:12,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:12:12,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:12:12,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:12:12,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:12:12,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-28 10:12:12,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:12:12,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:12:12,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:12:12,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:12:12,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 10:12:12,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:12:12,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 10:12:12,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:12:12,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:12:12,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:12:12,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:12:12,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 10:12:12,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:12:12,899 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:12:12,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1943173614] [2020-10-28 10:12:12,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:12:12,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 10:12:12,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842607936] [2020-10-28 10:12:12,903 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 10:12:12,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:12:12,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 10:12:12,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 10:12:12,906 INFO L87 Difference]: Start difference. First operand 476 states and 729 transitions. Second operand 6 states. [2020-10-28 10:12:13,265 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:12:14,278 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-28 10:12:17,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:12:17,763 INFO L93 Difference]: Finished difference Result 1833 states and 2877 transitions. [2020-10-28 10:12:17,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 10:12:17,765 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 214 [2020-10-28 10:12:17,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:12:17,789 INFO L225 Difference]: With dead ends: 1833 [2020-10-28 10:12:17,790 INFO L226 Difference]: Without dead ends: 1363 [2020-10-28 10:12:17,793 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 10:12:17,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1363 states. [2020-10-28 10:12:17,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1363 to 1323. [2020-10-28 10:12:17,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1323 states. [2020-10-28 10:12:17,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1323 states to 1323 states and 2007 transitions. [2020-10-28 10:12:17,890 INFO L78 Accepts]: Start accepts. Automaton has 1323 states and 2007 transitions. Word has length 214 [2020-10-28 10:12:17,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:12:17,891 INFO L481 AbstractCegarLoop]: Abstraction has 1323 states and 2007 transitions. [2020-10-28 10:12:17,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 10:12:17,891 INFO L276 IsEmpty]: Start isEmpty. Operand 1323 states and 2007 transitions. [2020-10-28 10:12:17,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-28 10:12:17,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:12:17,901 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:12:17,901 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 10:12:17,902 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:12:17,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:12:17,903 INFO L82 PathProgramCache]: Analyzing trace with hash 520325341, now seen corresponding path program 1 times [2020-10-28 10:12:17,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:12:17,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [432395117] [2020-10-28 10:12:17,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:12:17,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:12:18,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:12:18,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:12:19,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:12:21,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:12:21,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-10-28 10:12:21,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:12:21,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3613 [2020-10-28 10:12:21,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:12:21,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:12:21,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:12:21,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 10:12:21,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-28 10:12:21,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:12:21,943 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:12:21,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:12:21,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:12:21,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:12:21,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:12:21,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:12:21,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:12:21,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 10:12:21,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:12:21,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:12:21,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:12:21,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:12:21,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:12:21,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:12:22,117 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-28 10:12:22,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:12:22,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:12:22,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:12:22,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:12:22,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 10:12:22,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:12:22,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 10:12:22,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:12:22,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:12:22,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:12:22,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:12:22,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 10:12:22,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:12:22,309 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:12:22,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [432395117] [2020-10-28 10:12:22,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:12:22,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 10:12:22,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229954826] [2020-10-28 10:12:22,312 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 10:12:22,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:12:22,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 10:12:22,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:12:22,314 INFO L87 Difference]: Start difference. First operand 1323 states and 2007 transitions. Second operand 5 states. [2020-10-28 10:12:22,651 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:12:25,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:12:25,946 INFO L93 Difference]: Finished difference Result 3918 states and 6043 transitions. [2020-10-28 10:12:25,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 10:12:25,948 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 217 [2020-10-28 10:12:25,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:12:25,969 INFO L225 Difference]: With dead ends: 3918 [2020-10-28 10:12:25,970 INFO L226 Difference]: Without dead ends: 2601 [2020-10-28 10:12:25,979 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 10:12:25,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2601 states. [2020-10-28 10:12:26,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2601 to 2372. [2020-10-28 10:12:26,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2372 states. [2020-10-28 10:12:26,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2372 states to 2372 states and 3598 transitions. [2020-10-28 10:12:26,098 INFO L78 Accepts]: Start accepts. Automaton has 2372 states and 3598 transitions. Word has length 217 [2020-10-28 10:12:26,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:12:26,098 INFO L481 AbstractCegarLoop]: Abstraction has 2372 states and 3598 transitions. [2020-10-28 10:12:26,099 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 10:12:26,099 INFO L276 IsEmpty]: Start isEmpty. Operand 2372 states and 3598 transitions. [2020-10-28 10:12:26,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-28 10:12:26,111 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:12:26,112 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:12:26,112 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 10:12:26,112 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:12:26,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:12:26,113 INFO L82 PathProgramCache]: Analyzing trace with hash 346557896, now seen corresponding path program 1 times [2020-10-28 10:12:26,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:12:26,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1220457198] [2020-10-28 10:12:26,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:12:26,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:12:26,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:12:26,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:12:27,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:12:28,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:12:31,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:12:31,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-28 10:12:31,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 10:12:31,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-28 10:12:31,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:12:31,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:12:31,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:12:31,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-28 10:12:31,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-28 10:12:31,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:12:31,594 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:12:31,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:12:31,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:12:31,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:12:31,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:12:31,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:12:31,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:12:31,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 10:12:31,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:12:31,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:12:31,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:12:31,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:12:31,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:12:31,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:12:31,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:12:31,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:12:31,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:12:31,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:12:31,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 10:12:31,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:12:31,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 10:12:31,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:12:31,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:12:31,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:12:31,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:12:31,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:12:31,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:12:31,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 10:12:31,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:12:31,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:12:31,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:12:31,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 10:12:31,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:12:31,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 10:12:31,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:12:31,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:12:31,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:12:31,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:12:31,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 10:12:31,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:12:31,853 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-28 10:12:31,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1220457198] [2020-10-28 10:12:31,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:12:31,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 10:12:31,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201510011] [2020-10-28 10:12:31,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 10:12:31,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:12:31,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 10:12:31,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:12:31,857 INFO L87 Difference]: Start difference. First operand 2372 states and 3598 transitions. Second operand 5 states. [2020-10-28 10:12:32,214 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:12:35,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:12:35,474 INFO L93 Difference]: Finished difference Result 6628 states and 10304 transitions. [2020-10-28 10:12:35,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 10:12:35,475 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 224 [2020-10-28 10:12:35,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:12:35,505 INFO L225 Difference]: With dead ends: 6628 [2020-10-28 10:12:35,505 INFO L226 Difference]: Without dead ends: 4262 [2020-10-28 10:12:35,513 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 10:12:35,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4262 states. [2020-10-28 10:12:35,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4262 to 4255. [2020-10-28 10:12:35,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4255 states. [2020-10-28 10:12:35,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4255 states to 4255 states and 6396 transitions. [2020-10-28 10:12:35,692 INFO L78 Accepts]: Start accepts. Automaton has 4255 states and 6396 transitions. Word has length 224 [2020-10-28 10:12:35,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:12:35,692 INFO L481 AbstractCegarLoop]: Abstraction has 4255 states and 6396 transitions. [2020-10-28 10:12:35,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 10:12:35,693 INFO L276 IsEmpty]: Start isEmpty. Operand 4255 states and 6396 transitions. [2020-10-28 10:12:35,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-10-28 10:12:35,710 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:12:35,711 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:12:35,711 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 10:12:35,711 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:12:35,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:12:35,712 INFO L82 PathProgramCache]: Analyzing trace with hash -73425337, now seen corresponding path program 1 times [2020-10-28 10:12:35,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:12:35,712 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [822681072] [2020-10-28 10:12:35,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:12:35,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:12:35,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:12:35,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:12:37,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:12:38,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:12:40,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:12:40,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:12:40,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-28 10:12:40,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 10:12:40,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-10-28 10:12:40,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:12:40,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:12:40,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:12:40,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 10:12:40,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 243 [2020-10-28 10:12:40,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:12:41,167 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:12:41,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:12:41,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:12:41,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:12:41,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:12:41,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:12:41,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:12:41,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 10:12:41,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:12:41,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:12:41,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:12:41,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:12:41,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:12:41,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:12:41,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:12:41,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:12:41,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:12:41,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:12:41,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 10:12:41,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:12:41,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 10:12:41,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:12:41,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:12:41,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:12:41,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:12:41,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 10:12:41,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:12:41,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 10:12:41,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:12:41,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:12:41,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:12:41,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:12:41,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-28 10:12:41,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:12:41,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-10-28 10:12:41,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:12:41,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:12:41,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:12:41,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:12:41,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-28 10:12:41,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:12:41,951 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 41 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 10:12:41,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [822681072] [2020-10-28 10:12:41,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:12:41,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:12:41,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51495897] [2020-10-28 10:12:41,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:12:41,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:12:41,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:12:41,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:12:41,955 INFO L87 Difference]: Start difference. First operand 4255 states and 6396 transitions. Second operand 7 states. [2020-10-28 10:12:42,429 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-28 10:12:44,020 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-28 10:12:46,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:12:46,895 INFO L93 Difference]: Finished difference Result 12393 states and 21575 transitions. [2020-10-28 10:12:46,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 10:12:46,896 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 252 [2020-10-28 10:12:46,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:12:46,997 INFO L225 Difference]: With dead ends: 12393 [2020-10-28 10:12:46,997 INFO L226 Difference]: Without dead ends: 8144 [2020-10-28 10:12:47,016 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 10:12:47,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8144 states. [2020-10-28 10:12:47,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8144 to 7877. [2020-10-28 10:12:47,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7877 states. [2020-10-28 10:12:47,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7877 states to 7877 states and 12018 transitions. [2020-10-28 10:12:47,412 INFO L78 Accepts]: Start accepts. Automaton has 7877 states and 12018 transitions. Word has length 252 [2020-10-28 10:12:47,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:12:47,412 INFO L481 AbstractCegarLoop]: Abstraction has 7877 states and 12018 transitions. [2020-10-28 10:12:47,413 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:12:47,413 INFO L276 IsEmpty]: Start isEmpty. Operand 7877 states and 12018 transitions. [2020-10-28 10:12:47,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-10-28 10:12:47,442 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:12:47,443 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:12:47,443 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 10:12:47,443 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:12:47,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:12:47,444 INFO L82 PathProgramCache]: Analyzing trace with hash -733559818, now seen corresponding path program 1 times [2020-10-28 10:12:47,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:12:47,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [279267078] [2020-10-28 10:12:47,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:12:47,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:12:47,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:12:47,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:12:49,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:12:50,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:12:52,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:12:52,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 286 [2020-10-28 10:12:52,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 10:12:52,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-28 10:12:52,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:12:52,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:12:52,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:12:52,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-28 10:12:52,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-28 10:12:52,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:12:52,850 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:12:52,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:12:52,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:12:52,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:12:52,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:12:52,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:12:52,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:12:52,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 10:12:52,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:12:52,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:12:52,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:12:52,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:12:52,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:12:52,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:12:52,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:12:52,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:12:52,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:12:52,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:12:52,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 10:12:52,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:12:52,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 10:12:52,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:12:52,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:12:52,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:12:52,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:12:52,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:12:52,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:12:52,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 10:12:53,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:12:53,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:12:53,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:12:53,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-28 10:12:53,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:12:53,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-28 10:12:53,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:12:53,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:12:53,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:12:53,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:12:53,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-28 10:12:53,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:12:53,209 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 62 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-28 10:12:53,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [279267078] [2020-10-28 10:12:53,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:12:53,210 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 10:12:53,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074385656] [2020-10-28 10:12:53,211 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 10:12:53,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:12:53,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 10:12:53,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:12:53,212 INFO L87 Difference]: Start difference. First operand 7877 states and 12018 transitions. Second operand 5 states. [2020-10-28 10:12:53,465 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-28 10:12:56,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:12:56,470 INFO L93 Difference]: Finished difference Result 21222 states and 33340 transitions. [2020-10-28 10:12:56,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 10:12:56,470 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 272 [2020-10-28 10:12:56,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:12:56,556 INFO L225 Difference]: With dead ends: 21222 [2020-10-28 10:12:56,557 INFO L226 Difference]: Without dead ends: 13351 [2020-10-28 10:12:56,584 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 10:12:56,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13351 states. [2020-10-28 10:12:57,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13351 to 13323. [2020-10-28 10:12:57,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13323 states. [2020-10-28 10:12:57,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13323 states to 13323 states and 20776 transitions. [2020-10-28 10:12:57,186 INFO L78 Accepts]: Start accepts. Automaton has 13323 states and 20776 transitions. Word has length 272 [2020-10-28 10:12:57,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:12:57,186 INFO L481 AbstractCegarLoop]: Abstraction has 13323 states and 20776 transitions. [2020-10-28 10:12:57,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 10:12:57,187 INFO L276 IsEmpty]: Start isEmpty. Operand 13323 states and 20776 transitions. [2020-10-28 10:12:57,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2020-10-28 10:12:57,247 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:12:57,247 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:12:57,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 10:12:57,248 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:12:57,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:12:57,248 INFO L82 PathProgramCache]: Analyzing trace with hash -799270049, now seen corresponding path program 1 times [2020-10-28 10:12:57,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:12:57,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1204728684] [2020-10-28 10:12:57,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:12:57,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:12:57,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:12:58,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:12:58,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 303 [2020-10-28 10:12:58,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:12:58,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1107 [2020-10-28 10:12:58,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:12:58,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:12:58,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:12:58,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:12:58,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-28 10:12:58,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:12:58,713 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:12:58,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:12:58,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:12:58,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:12:58,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:12:58,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:12:58,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:12:58,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 10:12:58,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:12:58,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:12:58,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:12:58,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:12:58,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:12:58,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 10:12:58,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:12:58,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:12:58,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:12:59,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:12:59,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 10:12:59,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:12:59,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-28 10:12:59,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:12:59,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:12:59,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:12:59,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:12:59,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-28 10:12:59,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:12:59,437 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:12:59,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1204728684] [2020-10-28 10:12:59,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:12:59,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 10:12:59,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405681235] [2020-10-28 10:12:59,439 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:12:59,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:12:59,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:12:59,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:12:59,440 INFO L87 Difference]: Start difference. First operand 13323 states and 20776 transitions. Second operand 7 states. [2020-10-28 10:12:59,724 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-28 10:13:01,293 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-28 10:13:03,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:13:03,416 INFO L93 Difference]: Finished difference Result 29255 states and 46370 transitions. [2020-10-28 10:13:03,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 10:13:03,416 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 291 [2020-10-28 10:13:03,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:13:03,497 INFO L225 Difference]: With dead ends: 29255 [2020-10-28 10:13:03,497 INFO L226 Difference]: Without dead ends: 15938 [2020-10-28 10:13:03,541 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 10:13:03,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15938 states. [2020-10-28 10:13:04,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15938 to 15901. [2020-10-28 10:13:04,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15901 states. [2020-10-28 10:13:04,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15901 states to 15901 states and 24918 transitions. [2020-10-28 10:13:04,105 INFO L78 Accepts]: Start accepts. Automaton has 15901 states and 24918 transitions. Word has length 291 [2020-10-28 10:13:04,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:13:04,106 INFO L481 AbstractCegarLoop]: Abstraction has 15901 states and 24918 transitions. [2020-10-28 10:13:04,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:13:04,106 INFO L276 IsEmpty]: Start isEmpty. Operand 15901 states and 24918 transitions. [2020-10-28 10:13:04,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2020-10-28 10:13:04,183 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:13:04,184 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:13:04,184 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 10:13:04,184 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:13:04,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:13:04,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1922827150, now seen corresponding path program 1 times [2020-10-28 10:13:04,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:13:04,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1436094789] [2020-10-28 10:13:04,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:13:04,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:13:04,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:13:04,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:13:07,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:13:07,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 314 [2020-10-28 10:13:07,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:13:07,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3631 [2020-10-28 10:13:07,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:13:07,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:13:07,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:13:07,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 10:13:07,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-28 10:13:07,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:13:08,146 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:13:08,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:13:08,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:13:08,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:13:08,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:13:08,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:13:08,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:13:08,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 10:13:08,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:13:08,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:13:08,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:13:08,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:13:08,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:13:08,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:13:08,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:13:08,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:13:08,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:13:08,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:13:08,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 10:13:08,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:13:08,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 10:13:08,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:13:08,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:13:08,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:13:08,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:13:08,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 10:13:08,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:13:08,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-28 10:13:08,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:13:08,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:13:08,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:13:08,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 10:13:08,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:13:08,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-28 10:13:08,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:13:08,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:13:08,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:13:08,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:13:08,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-28 10:13:08,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:13:08,764 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 95 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 10:13:08,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1436094789] [2020-10-28 10:13:08,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:13:08,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:13:08,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824035726] [2020-10-28 10:13:08,766 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:13:08,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:13:08,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:13:08,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:13:08,767 INFO L87 Difference]: Start difference. First operand 15901 states and 24918 transitions. Second operand 7 states. [2020-10-28 10:13:09,175 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:13:09,416 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:13:15,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:13:15,008 INFO L93 Difference]: Finished difference Result 43123 states and 77625 transitions. [2020-10-28 10:13:15,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 10:13:15,009 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 300 [2020-10-28 10:13:15,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:13:15,222 INFO L225 Difference]: With dead ends: 43123 [2020-10-28 10:13:15,222 INFO L226 Difference]: Without dead ends: 27435 [2020-10-28 10:13:15,279 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:13:15,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27435 states. [2020-10-28 10:13:16,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27435 to 26910. [2020-10-28 10:13:16,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26910 states. [2020-10-28 10:13:16,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26910 states to 26910 states and 42281 transitions. [2020-10-28 10:13:16,505 INFO L78 Accepts]: Start accepts. Automaton has 26910 states and 42281 transitions. Word has length 300 [2020-10-28 10:13:16,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:13:16,506 INFO L481 AbstractCegarLoop]: Abstraction has 26910 states and 42281 transitions. [2020-10-28 10:13:16,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:13:16,506 INFO L276 IsEmpty]: Start isEmpty. Operand 26910 states and 42281 transitions. [2020-10-28 10:13:16,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2020-10-28 10:13:16,597 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:13:16,597 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:13:16,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 10:13:16,598 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:13:16,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:13:16,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1096207836, now seen corresponding path program 1 times [2020-10-28 10:13:16,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:13:16,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1266518444] [2020-10-28 10:13:16,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:13:16,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:13:16,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:13:16,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:13:17,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:13:20,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:13:20,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 315 [2020-10-28 10:13:20,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:13:20,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3957 [2020-10-28 10:13:20,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:13:20,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:13:20,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:13:20,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-28 10:13:20,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-28 10:13:20,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:13:20,881 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:13:20,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:13:20,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:13:20,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:13:20,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:13:20,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:13:20,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:13:20,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 10:13:20,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:13:20,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:13:20,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:13:20,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:13:20,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:13:20,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:13:21,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:13:21,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:13:21,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:13:21,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:13:21,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 10:13:21,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:13:21,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 10:13:21,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:13:21,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:13:21,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:13:21,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:13:21,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 10:13:21,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:13:21,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-28 10:13:21,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:13:21,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:13:21,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:13:21,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 10:13:21,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:13:21,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-28 10:13:21,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:13:21,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:13:21,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:13:21,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:13:21,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-28 10:13:21,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:13:21,384 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 97 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 10:13:21,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1266518444] [2020-10-28 10:13:21,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:13:21,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 10:13:21,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373895498] [2020-10-28 10:13:21,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 10:13:21,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:13:21,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 10:13:21,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 10:13:21,386 INFO L87 Difference]: Start difference. First operand 26910 states and 42281 transitions. Second operand 8 states. [2020-10-28 10:13:21,680 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-28 10:13:22,231 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-28 10:13:25,085 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-28 10:13:27,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:13:27,088 INFO L93 Difference]: Finished difference Result 59427 states and 94574 transitions. [2020-10-28 10:13:27,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 10:13:27,089 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 301 [2020-10-28 10:13:27,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:13:27,256 INFO L225 Difference]: With dead ends: 59427 [2020-10-28 10:13:27,257 INFO L226 Difference]: Without dead ends: 32730 [2020-10-28 10:13:27,315 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-10-28 10:13:27,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32730 states. [2020-10-28 10:13:28,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32730 to 31375. [2020-10-28 10:13:28,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31375 states. [2020-10-28 10:13:28,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31375 states to 31375 states and 47861 transitions. [2020-10-28 10:13:28,525 INFO L78 Accepts]: Start accepts. Automaton has 31375 states and 47861 transitions. Word has length 301 [2020-10-28 10:13:28,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:13:28,525 INFO L481 AbstractCegarLoop]: Abstraction has 31375 states and 47861 transitions. [2020-10-28 10:13:28,526 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 10:13:28,526 INFO L276 IsEmpty]: Start isEmpty. Operand 31375 states and 47861 transitions. [2020-10-28 10:13:28,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2020-10-28 10:13:28,603 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:13:28,603 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:13:28,604 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 10:13:28,604 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:13:28,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:13:28,605 INFO L82 PathProgramCache]: Analyzing trace with hash 625720658, now seen corresponding path program 1 times [2020-10-28 10:13:28,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:13:28,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1434484262] [2020-10-28 10:13:28,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:13:28,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:13:28,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:13:28,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:13:31,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:13:31,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 316 [2020-10-28 10:13:31,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:13:31,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2355 [2020-10-28 10:13:31,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:13:31,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:13:31,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:13:31,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 10:13:31,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-28 10:13:31,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:13:31,281 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:13:31,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:13:31,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:13:31,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:13:31,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:13:31,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:13:31,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:13:31,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 10:13:31,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:13:31,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:13:31,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:13:31,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:13:31,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:13:31,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:13:31,501 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-28 10:13:31,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:13:31,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:13:31,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:13:31,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:13:31,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 10:13:31,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:13:31,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 10:13:31,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:13:31,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:13:31,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:13:31,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:13:31,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 10:13:31,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:13:31,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 10:13:31,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:13:31,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:13:31,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:13:31,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 10:13:31,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:13:31,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-10-28 10:13:31,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:13:31,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:13:31,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:13:31,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:13:31,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-28 10:13:31,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:13:31,960 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 10:13:31,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1434484262] [2020-10-28 10:13:31,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:13:31,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:13:31,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150760858] [2020-10-28 10:13:31,962 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:13:31,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:13:31,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:13:31,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:13:31,963 INFO L87 Difference]: Start difference. First operand 31375 states and 47861 transitions. Second operand 7 states. [2020-10-28 10:13:32,221 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:13:32,976 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:13:36,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:13:36,191 INFO L93 Difference]: Finished difference Result 56026 states and 86507 transitions. [2020-10-28 10:13:36,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 10:13:36,191 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 302 [2020-10-28 10:13:36,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:13:36,297 INFO L225 Difference]: With dead ends: 56026 [2020-10-28 10:13:36,297 INFO L226 Difference]: Without dead ends: 24964 [2020-10-28 10:13:36,354 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:13:36,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24964 states. [2020-10-28 10:13:36,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24964 to 24596. [2020-10-28 10:13:36,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24596 states. [2020-10-28 10:13:37,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24596 states to 24596 states and 31949 transitions. [2020-10-28 10:13:37,012 INFO L78 Accepts]: Start accepts. Automaton has 24596 states and 31949 transitions. Word has length 302 [2020-10-28 10:13:37,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:13:37,013 INFO L481 AbstractCegarLoop]: Abstraction has 24596 states and 31949 transitions. [2020-10-28 10:13:37,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:13:37,013 INFO L276 IsEmpty]: Start isEmpty. Operand 24596 states and 31949 transitions. [2020-10-28 10:13:37,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-10-28 10:13:37,052 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:13:37,052 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:13:37,053 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 10:13:37,053 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:13:37,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:13:37,053 INFO L82 PathProgramCache]: Analyzing trace with hash -1485469891, now seen corresponding path program 1 times [2020-10-28 10:13:37,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:13:37,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [7375737] [2020-10-28 10:13:37,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:13:37,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:13:37,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:13:37,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:13:37,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:13:37,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:13:37,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:13:38,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:13:42,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:13:42,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 352 [2020-10-28 10:13:42,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 10:13:42,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-28 10:13:42,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:13:42,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:13:42,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:13:42,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-28 10:13:42,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-28 10:13:42,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:13:42,461 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:13:42,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:13:42,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:13:42,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:13:42,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:13:42,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:13:42,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:13:42,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 10:13:42,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:13:42,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:13:42,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:13:42,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:13:42,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:13:42,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:13:42,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:13:42,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:13:42,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:13:42,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:13:42,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 10:13:42,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:13:42,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 10:13:42,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:13:42,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:13:42,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:13:42,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:13:42,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 10:13:42,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:13:42,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 10:13:42,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:13:42,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:13:42,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:13:42,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:13:42,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 10:13:42,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:13:42,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-28 10:13:42,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:13:42,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:13:42,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:13:42,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:13:42,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 10:13:42,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:13:42,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-28 10:13:42,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:13:42,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:13:42,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:13:42,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 10:13:42,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:13:42,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-10-28 10:13:42,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:13:42,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:13:42,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:13:42,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:13:42,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-28 10:13:42,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:13:43,148 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 157 proven. 4 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-28 10:13:43,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [7375737] [2020-10-28 10:13:43,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:13:43,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:13:43,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555179105] [2020-10-28 10:13:43,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:13:43,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:13:43,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:13:43,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:13:43,151 INFO L87 Difference]: Start difference. First operand 24596 states and 31949 transitions. Second operand 7 states. [2020-10-28 10:13:43,517 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-28 10:13:43,898 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-28 10:13:48,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:13:48,658 INFO L93 Difference]: Finished difference Result 54763 states and 74304 transitions. [2020-10-28 10:13:48,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 10:13:48,659 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 336 [2020-10-28 10:13:48,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:13:48,798 INFO L225 Difference]: With dead ends: 54763 [2020-10-28 10:13:48,798 INFO L226 Difference]: Without dead ends: 30380 [2020-10-28 10:13:48,846 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:13:48,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30380 states. [2020-10-28 10:13:49,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30380 to 29690. [2020-10-28 10:13:49,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29690 states. [2020-10-28 10:13:49,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29690 states to 29690 states and 37048 transitions. [2020-10-28 10:13:49,850 INFO L78 Accepts]: Start accepts. Automaton has 29690 states and 37048 transitions. Word has length 336 [2020-10-28 10:13:49,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:13:49,850 INFO L481 AbstractCegarLoop]: Abstraction has 29690 states and 37048 transitions. [2020-10-28 10:13:49,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:13:49,850 INFO L276 IsEmpty]: Start isEmpty. Operand 29690 states and 37048 transitions. [2020-10-28 10:13:49,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2020-10-28 10:13:49,888 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:13:49,888 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:13:49,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 10:13:49,889 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:13:49,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:13:49,889 INFO L82 PathProgramCache]: Analyzing trace with hash 164272403, now seen corresponding path program 1 times [2020-10-28 10:13:49,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:13:49,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1590155504] [2020-10-28 10:13:49,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:13:49,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:13:49,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:13:50,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:13:50,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:13:50,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:13:50,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:13:54,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:13:54,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:13:54,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:13:54,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 364 [2020-10-28 10:13:54,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 10:13:54,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 10:13:54,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:13:54,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:13:54,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 10:13:54,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-28 10:13:54,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 10:13:54,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:13:55,241 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:13:55,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:13:55,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:13:55,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:13:55,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:13:55,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:13:55,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:13:55,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 10:13:55,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:13:55,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:13:55,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:13:55,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:13:55,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:13:55,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:13:55,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:13:55,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:13:55,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:13:55,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:13:55,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 10:13:55,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:13:55,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 10:13:55,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:13:55,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:13:55,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:13:55,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:13:55,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:13:55,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:13:55,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 10:13:55,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:13:55,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:13:55,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:13:55,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 10:13:55,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:13:55,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 10:13:55,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:13:55,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:13:55,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:13:55,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:13:55,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:13:55,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:13:55,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-28 10:13:55,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:13:55,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:13:55,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:13:55,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 10:13:55,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:13:55,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 10:13:55,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:13:55,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:13:55,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 10:13:55,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:13:55,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 10:13:55,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:13:55,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-28 10:13:55,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:13:55,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:13:55,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:13:55,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 10:13:55,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:13:55,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-28 10:13:55,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:13:55,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:13:55,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:13:55,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:13:55,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-28 10:13:55,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:13:55,957 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 177 proven. 2 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-10-28 10:13:55,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1590155504] [2020-10-28 10:13:55,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:13:55,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 10:13:55,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991664803] [2020-10-28 10:13:55,958 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 10:13:55,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:13:55,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 10:13:55,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 10:13:55,959 INFO L87 Difference]: Start difference. First operand 29690 states and 37048 transitions. Second operand 8 states. [2020-10-28 10:13:56,487 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-28 10:13:57,364 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-28 10:13:58,793 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-28 10:14:03,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:14:03,345 INFO L93 Difference]: Finished difference Result 76650 states and 104027 transitions. [2020-10-28 10:14:03,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 10:14:03,346 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 346 [2020-10-28 10:14:03,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:14:03,521 INFO L225 Difference]: With dead ends: 76650 [2020-10-28 10:14:03,522 INFO L226 Difference]: Without dead ends: 47173 [2020-10-28 10:14:03,579 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-28 10:14:03,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47173 states. [2020-10-28 10:14:04,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47173 to 44009. [2020-10-28 10:14:04,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44009 states. [2020-10-28 10:14:04,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44009 states to 44009 states and 53330 transitions. [2020-10-28 10:14:04,960 INFO L78 Accepts]: Start accepts. Automaton has 44009 states and 53330 transitions. Word has length 346 [2020-10-28 10:14:04,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:14:04,960 INFO L481 AbstractCegarLoop]: Abstraction has 44009 states and 53330 transitions. [2020-10-28 10:14:04,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 10:14:04,961 INFO L276 IsEmpty]: Start isEmpty. Operand 44009 states and 53330 transitions. [2020-10-28 10:14:05,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2020-10-28 10:14:05,014 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:14:05,014 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:14:05,015 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 10:14:05,015 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:14:05,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:14:05,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1022625274, now seen corresponding path program 1 times [2020-10-28 10:14:05,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:14:05,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [326653189] [2020-10-28 10:14:05,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:14:05,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:14:05,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:14:05,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:14:05,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:14:05,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:14:07,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:14:10,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:14:10,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 370 [2020-10-28 10:14:10,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 10:14:10,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 10:14:10,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:14:10,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:14:10,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:14:10,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-28 10:14:10,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-28 10:14:10,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:14:10,656 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:14:10,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:14:10,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:14:10,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:14:10,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:14:10,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:14:10,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:14:10,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 10:14:10,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:14:10,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:14:10,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:14:10,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:14:10,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:14:10,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:14:10,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:14:10,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:14:10,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:14:10,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:14:10,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 10:14:10,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:14:10,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 10:14:10,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:14:10,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:14:10,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:14:10,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:14:10,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:14:10,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:14:10,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 10:14:10,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:14:10,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:14:10,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:14:10,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 10:14:10,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:14:10,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 10:14:10,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:14:10,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:14:10,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:14:10,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:14:10,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:14:10,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:14:10,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-28 10:14:10,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:14:10,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:14:10,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:14:10,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 10:14:10,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:14:10,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 10:14:10,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:14:10,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:14:10,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:14:10,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:14:10,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 10:14:10,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:14:10,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-28 10:14:10,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:14:10,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:14:11,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:14:11,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 10:14:11,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:14:11,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-10-28 10:14:11,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:14:11,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:14:11,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:14:11,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:14:11,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-28 10:14:11,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:14:11,389 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 193 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2020-10-28 10:14:11,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [326653189] [2020-10-28 10:14:11,390 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:14:11,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:14:11,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104103103] [2020-10-28 10:14:11,390 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:14:11,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:14:11,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:14:11,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:14:11,391 INFO L87 Difference]: Start difference. First operand 44009 states and 53330 transitions. Second operand 7 states. [2020-10-28 10:14:11,884 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-28 10:14:12,549 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-28 10:14:16,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:14:16,461 INFO L93 Difference]: Finished difference Result 92173 states and 117234 transitions. [2020-10-28 10:14:16,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 10:14:16,462 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 352 [2020-10-28 10:14:16,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:14:16,590 INFO L225 Difference]: With dead ends: 92173 [2020-10-28 10:14:16,590 INFO L226 Difference]: Without dead ends: 48377 [2020-10-28 10:14:16,658 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 10:14:16,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48377 states. [2020-10-28 10:14:18,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48377 to 46977. [2020-10-28 10:14:18,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46977 states. [2020-10-28 10:14:18,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46977 states to 46977 states and 56645 transitions. [2020-10-28 10:14:18,583 INFO L78 Accepts]: Start accepts. Automaton has 46977 states and 56645 transitions. Word has length 352 [2020-10-28 10:14:18,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:14:18,584 INFO L481 AbstractCegarLoop]: Abstraction has 46977 states and 56645 transitions. [2020-10-28 10:14:18,584 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:14:18,584 INFO L276 IsEmpty]: Start isEmpty. Operand 46977 states and 56645 transitions. [2020-10-28 10:14:18,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2020-10-28 10:14:18,665 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:14:18,665 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:14:18,665 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 10:14:18,666 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:14:18,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:14:18,666 INFO L82 PathProgramCache]: Analyzing trace with hash 1704960651, now seen corresponding path program 1 times [2020-10-28 10:14:18,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:14:18,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [501394703] [2020-10-28 10:14:18,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:14:18,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:14:18,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:14:19,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:14:19,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:14:21,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:14:23,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:14:23,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:14:23,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 371 [2020-10-28 10:14:23,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 10:14:23,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-28 10:14:23,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:14:23,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:14:23,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:14:23,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 164 [2020-10-28 10:14:23,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-28 10:14:23,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:14:24,312 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:14:24,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:14:24,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:14:24,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:14:24,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:14:24,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:14:24,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:14:24,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 10:14:24,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:14:24,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:14:24,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:14:24,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:14:24,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:14:24,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:14:24,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:14:24,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:14:24,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:14:24,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:14:24,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 10:14:24,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:14:24,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 10:14:24,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:14:24,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:14:24,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:14:24,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:14:24,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:14:24,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:14:24,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 10:14:24,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:14:24,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:14:24,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:14:24,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 10:14:24,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:14:24,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 10:14:24,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:14:24,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:14:24,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:14:24,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:14:24,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:14:24,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:14:24,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 10:14:24,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:14:24,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:14:24,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:14:24,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 10:14:24,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:14:24,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-28 10:14:24,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:14:24,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:14:24,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:14:24,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:14:24,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-28 10:14:24,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:14:24,747 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 144 proven. 3 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-10-28 10:14:24,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [501394703] [2020-10-28 10:14:24,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:14:24,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 10:14:24,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837869107] [2020-10-28 10:14:24,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 10:14:24,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:14:24,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 10:14:24,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:14:24,749 INFO L87 Difference]: Start difference. First operand 46977 states and 56645 transitions. Second operand 5 states. [2020-10-28 10:14:25,018 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:14:28,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:14:28,385 INFO L93 Difference]: Finished difference Result 93766 states and 113094 transitions. [2020-10-28 10:14:28,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 10:14:28,386 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 355 [2020-10-28 10:14:28,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:14:28,707 INFO L225 Difference]: With dead ends: 93766 [2020-10-28 10:14:28,707 INFO L226 Difference]: Without dead ends: 47004 [2020-10-28 10:14:28,738 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 10:14:28,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47004 states. [2020-10-28 10:14:29,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47004 to 46561. [2020-10-28 10:14:29,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46561 states. [2020-10-28 10:14:29,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46561 states to 46561 states and 54793 transitions. [2020-10-28 10:14:29,835 INFO L78 Accepts]: Start accepts. Automaton has 46561 states and 54793 transitions. Word has length 355 [2020-10-28 10:14:29,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:14:29,835 INFO L481 AbstractCegarLoop]: Abstraction has 46561 states and 54793 transitions. [2020-10-28 10:14:29,835 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 10:14:29,835 INFO L276 IsEmpty]: Start isEmpty. Operand 46561 states and 54793 transitions. [2020-10-28 10:14:29,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2020-10-28 10:14:29,888 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:14:29,888 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:14:29,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 10:14:29,889 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:14:29,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:14:29,889 INFO L82 PathProgramCache]: Analyzing trace with hash -522424466, now seen corresponding path program 1 times [2020-10-28 10:14:29,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:14:29,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [806014019] [2020-10-28 10:14:29,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:14:29,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:14:30,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:14:30,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:14:30,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:14:30,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:14:30,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:14:30,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:14:34,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:14:34,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:14:34,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 397 [2020-10-28 10:14:34,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 10:14:34,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-28 10:14:34,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:14:34,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:14:34,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:14:34,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-28 10:14:34,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-28 10:14:34,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:14:35,272 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:14:35,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:14:35,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:14:35,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:14:35,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:14:35,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:14:35,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:14:35,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 10:14:35,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:14:35,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:14:35,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:14:35,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:14:35,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:14:35,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:14:35,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:14:35,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:14:35,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:14:35,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:14:35,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 10:14:35,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:14:35,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 10:14:35,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:14:35,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:14:35,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:14:35,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:14:35,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:14:35,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:14:35,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-28 10:14:35,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:14:35,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:14:35,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:14:35,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 10:14:35,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:14:35,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-28 10:14:35,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:14:35,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:14:35,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:14:35,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:14:35,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 10:14:35,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:14:35,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-28 10:14:35,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:14:35,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:14:35,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:14:35,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:14:35,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 10:14:35,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:14:35,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 10:14:35,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:14:35,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:14:35,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:14:35,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:14:35,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 10:14:35,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:14:35,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-28 10:14:35,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:14:35,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:14:35,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:14:35,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 10:14:35,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:14:35,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 10:14:35,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:14:35,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:14:35,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:14:35,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:14:35,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 10:14:35,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:14:35,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-28 10:14:35,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:14:35,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:14:35,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:14:35,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 10:14:35,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:14:35,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-28 10:14:35,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:14:35,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:14:35,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:14:35,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-28 10:14:35,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:14:35,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:14:35,881 INFO L134 CoverageAnalysis]: Checked inductivity of 315 backedges. 209 proven. 20 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-28 10:14:35,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [806014019] [2020-10-28 10:14:35,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:14:35,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:14:35,882 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710074287] [2020-10-28 10:14:35,883 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:14:35,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:14:35,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:14:35,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:14:35,884 INFO L87 Difference]: Start difference. First operand 46561 states and 54793 transitions. Second operand 7 states. [2020-10-28 10:14:36,144 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-28 10:14:38,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:14:38,257 INFO L93 Difference]: Finished difference Result 82924 states and 97764 transitions. [2020-10-28 10:14:38,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 10:14:38,257 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 377 [2020-10-28 10:14:38,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:14:38,321 INFO L225 Difference]: With dead ends: 82924 [2020-10-28 10:14:38,321 INFO L226 Difference]: Without dead ends: 36578 [2020-10-28 10:14:38,368 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-28 10:14:38,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36578 states. [2020-10-28 10:14:39,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36578 to 36554. [2020-10-28 10:14:39,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36554 states. [2020-10-28 10:14:39,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36554 states to 36554 states and 42163 transitions. [2020-10-28 10:14:39,087 INFO L78 Accepts]: Start accepts. Automaton has 36554 states and 42163 transitions. Word has length 377 [2020-10-28 10:14:39,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:14:39,087 INFO L481 AbstractCegarLoop]: Abstraction has 36554 states and 42163 transitions. [2020-10-28 10:14:39,087 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:14:39,087 INFO L276 IsEmpty]: Start isEmpty. Operand 36554 states and 42163 transitions. [2020-10-28 10:14:39,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2020-10-28 10:14:39,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:14:39,129 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:14:39,129 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 10:14:39,129 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:14:39,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:14:39,130 INFO L82 PathProgramCache]: Analyzing trace with hash 956023096, now seen corresponding path program 1 times [2020-10-28 10:14:39,130 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:14:39,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1919969347] [2020-10-28 10:14:39,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:14:39,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:14:39,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:14:39,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:14:39,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:14:41,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:14:44,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:14:44,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 445 [2020-10-28 10:14:44,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 10:14:44,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-28 10:14:44,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:14:44,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:14:44,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:14:44,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 148 [2020-10-28 10:14:44,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 10:14:44,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:14:44,546 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:14:44,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:14:44,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:14:44,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:14:44,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:14:44,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:14:44,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:14:44,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 10:14:44,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:14:44,557 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:14:44,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:14:44,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:14:44,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:14:44,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:14:44,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:14:44,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:14:44,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:14:44,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:14:44,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 10:14:44,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:14:44,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 10:14:44,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:14:44,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:14:44,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:14:44,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:14:44,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:14:44,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:14:44,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 10:14:44,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:14:44,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:14:44,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:14:44,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-28 10:14:44,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:14:44,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-28 10:14:44,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:14:44,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:14:44,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:14:44,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:14:44,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-28 10:14:44,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:14:44,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-28 10:14:44,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:14:44,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:14:45,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:14:45,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 10:14:45,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:14:45,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 291 [2020-10-28 10:14:45,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:14:45,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:14:45,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:14:45,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:14:45,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-28 10:14:45,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:14:45,416 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 309 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-28 10:14:45,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1919969347] [2020-10-28 10:14:45,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:14:45,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:14:45,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735108418] [2020-10-28 10:14:45,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:14:45,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:14:45,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:14:45,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:14:45,419 INFO L87 Difference]: Start difference. First operand 36554 states and 42163 transitions. Second operand 7 states. [2020-10-28 10:14:45,677 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-28 10:14:46,937 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-28 10:14:48,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:14:48,994 INFO L93 Difference]: Finished difference Result 73765 states and 85257 transitions. [2020-10-28 10:14:48,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 10:14:48,994 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 429 [2020-10-28 10:14:48,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:14:49,058 INFO L225 Difference]: With dead ends: 73765 [2020-10-28 10:14:49,058 INFO L226 Difference]: Without dead ends: 37430 [2020-10-28 10:14:49,091 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:14:49,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37430 states. [2020-10-28 10:14:49,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37430 to 36767. [2020-10-28 10:14:49,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36767 states. [2020-10-28 10:14:49,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36767 states to 36767 states and 41934 transitions. [2020-10-28 10:14:49,876 INFO L78 Accepts]: Start accepts. Automaton has 36767 states and 41934 transitions. Word has length 429 [2020-10-28 10:14:49,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:14:49,877 INFO L481 AbstractCegarLoop]: Abstraction has 36767 states and 41934 transitions. [2020-10-28 10:14:49,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:14:49,877 INFO L276 IsEmpty]: Start isEmpty. Operand 36767 states and 41934 transitions. [2020-10-28 10:14:49,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2020-10-28 10:14:49,918 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:14:49,918 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:14:49,918 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 10:14:49,918 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:14:49,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:14:49,919 INFO L82 PathProgramCache]: Analyzing trace with hash -223339687, now seen corresponding path program 1 times [2020-10-28 10:14:49,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:14:49,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1507440842] [2020-10-28 10:14:49,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:14:49,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:14:49,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:14:50,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:14:50,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:14:50,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:14:51,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:14:51,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:14:51,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:14:54,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:14:55,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:14:55,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 460 [2020-10-28 10:14:55,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 10:14:55,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5061 [2020-10-28 10:14:55,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:14:55,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:14:55,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:14:55,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:14:55,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-28 10:14:55,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:14:55,339 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:14:55,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:14:55,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:14:55,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:14:55,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:14:55,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:14:55,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:14:55,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 10:14:55,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:14:55,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:14:55,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:14:55,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:14:55,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:14:55,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:14:55,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:14:55,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:14:55,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:14:55,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:14:55,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:14:55,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-28 10:14:55,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:14:55,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 10:14:55,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:14:55,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:14:55,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:14:55,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:14:55,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 10:14:55,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:14:55,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 10:14:55,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:14:55,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:14:55,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:14:55,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:14:55,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-28 10:14:55,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:14:55,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-28 10:14:55,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:14:55,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:14:55,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:14:55,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:14:55,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 10:14:55,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:14:55,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-28 10:14:55,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:14:55,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:14:55,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:14:55,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:14:55,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 10:14:55,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:14:55,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 10:14:55,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:14:55,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:14:55,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:14:55,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-28 10:14:55,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 10:14:55,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:14:55,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-28 10:14:55,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:14:55,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:14:55,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:14:55,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-28 10:14:55,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:14:55,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 10:14:55,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:14:55,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:14:55,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:14:55,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-28 10:14:55,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:14:55,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:14:55,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-28 10:14:55,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:14:55,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:14:55,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:14:55,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 10:14:55,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:14:55,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-28 10:14:55,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:14:55,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:14:55,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:14:55,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-28 10:14:55,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:14:55,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:14:56,040 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 238 proven. 4 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2020-10-28 10:14:56,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1507440842] [2020-10-28 10:14:56,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:14:56,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 10:14:56,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586890427] [2020-10-28 10:14:56,042 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 10:14:56,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:14:56,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 10:14:56,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 10:14:56,044 INFO L87 Difference]: Start difference. First operand 36767 states and 41934 transitions. Second operand 6 states. [2020-10-28 10:14:56,296 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:14:58,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:14:58,443 INFO L93 Difference]: Finished difference Result 64511 states and 73527 transitions. [2020-10-28 10:14:58,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 10:14:58,445 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 440 [2020-10-28 10:14:58,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:14:58,525 INFO L225 Difference]: With dead ends: 64511 [2020-10-28 10:14:58,526 INFO L226 Difference]: Without dead ends: 36788 [2020-10-28 10:14:58,669 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:14:58,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36788 states. [2020-10-28 10:14:59,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36788 to 36764. [2020-10-28 10:14:59,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36764 states. [2020-10-28 10:14:59,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36764 states to 36764 states and 41928 transitions. [2020-10-28 10:14:59,188 INFO L78 Accepts]: Start accepts. Automaton has 36764 states and 41928 transitions. Word has length 440 [2020-10-28 10:14:59,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:14:59,188 INFO L481 AbstractCegarLoop]: Abstraction has 36764 states and 41928 transitions. [2020-10-28 10:14:59,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 10:14:59,188 INFO L276 IsEmpty]: Start isEmpty. Operand 36764 states and 41928 transitions. [2020-10-28 10:14:59,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 460 [2020-10-28 10:14:59,226 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:14:59,227 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:14:59,227 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 10:14:59,227 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:14:59,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:14:59,228 INFO L82 PathProgramCache]: Analyzing trace with hash -1139455938, now seen corresponding path program 1 times [2020-10-28 10:14:59,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:14:59,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1774713286] [2020-10-28 10:14:59,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:14:59,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:14:59,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:14:59,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:14:59,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:14:59,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:15:04,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:15:04,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 481 [2020-10-28 10:15:04,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 10:15:04,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 10:15:04,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:15:04,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:15:04,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:15:04,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 186 [2020-10-28 10:15:04,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-28 10:15:04,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:15:04,616 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:15:04,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:15:04,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:15:04,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:15:04,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:15:04,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:15:04,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:15:04,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 10:15:04,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:15:04,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:15:04,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:15:04,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:15:04,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:15:04,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:15:04,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:15:04,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:15:04,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:15:04,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:15:04,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-28 10:15:04,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:15:04,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 10:15:04,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:15:04,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:15:04,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:15:04,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:15:04,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:15:04,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:15:04,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 10:15:04,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:15:04,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:15:04,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:15:04,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-28 10:15:04,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:15:04,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 10:15:04,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:15:04,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:15:04,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:15:04,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:15:04,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:15:04,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:15:04,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-28 10:15:04,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:15:04,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:15:04,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:15:04,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 10:15:04,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:15:04,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 10:15:04,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:15:04,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:15:04,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:15:04,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:15:04,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:15:04,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:15:04,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-28 10:15:04,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:15:04,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:15:04,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:15:04,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 10:15:04,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:15:04,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 10:15:04,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:15:04,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:15:04,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:15:04,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:15:04,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:15:04,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:15:04,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-28 10:15:04,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:15:04,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:15:04,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:15:04,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-28 10:15:04,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:15:04,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 10:15:04,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:15:04,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:15:04,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:15:04,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:15:04,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 10:15:04,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:15:04,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-28 10:15:04,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:15:05,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:15:05,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:15:05,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 10:15:05,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:15:05,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-10-28 10:15:05,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:15:05,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:15:05,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:15:05,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:15:05,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-28 10:15:05,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:15:05,592 INFO L134 CoverageAnalysis]: Checked inductivity of 577 backedges. 401 proven. 2 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2020-10-28 10:15:05,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1774713286] [2020-10-28 10:15:05,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:15:05,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:15:05,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223245534] [2020-10-28 10:15:05,593 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:15:05,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:15:05,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:15:05,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:15:05,594 INFO L87 Difference]: Start difference. First operand 36764 states and 41928 transitions. Second operand 7 states. [2020-10-28 10:15:06,653 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-28 10:15:08,051 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-28 10:15:10,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:15:10,095 INFO L93 Difference]: Finished difference Result 66759 states and 79269 transitions. [2020-10-28 10:15:10,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 10:15:10,096 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 459 [2020-10-28 10:15:10,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:15:10,230 INFO L225 Difference]: With dead ends: 66759 [2020-10-28 10:15:10,230 INFO L226 Difference]: Without dead ends: 39039 [2020-10-28 10:15:10,274 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-28 10:15:10,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39039 states. [2020-10-28 10:15:11,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39039 to 37813. [2020-10-28 10:15:11,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37813 states. [2020-10-28 10:15:11,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37813 states to 37813 states and 43026 transitions. [2020-10-28 10:15:11,070 INFO L78 Accepts]: Start accepts. Automaton has 37813 states and 43026 transitions. Word has length 459 [2020-10-28 10:15:11,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:15:11,071 INFO L481 AbstractCegarLoop]: Abstraction has 37813 states and 43026 transitions. [2020-10-28 10:15:11,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:15:11,071 INFO L276 IsEmpty]: Start isEmpty. Operand 37813 states and 43026 transitions. [2020-10-28 10:15:11,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2020-10-28 10:15:11,111 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:15:11,111 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:15:11,112 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 10:15:11,112 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:15:11,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:15:11,112 INFO L82 PathProgramCache]: Analyzing trace with hash 2126142896, now seen corresponding path program 1 times [2020-10-28 10:15:11,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:15:11,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1968263118] [2020-10-28 10:15:11,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:15:11,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:15:11,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:15:11,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:15:11,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:15:12,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:15:12,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:15:12,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:15:16,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:15:16,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 484 [2020-10-28 10:15:16,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 10:15:16,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-10-28 10:15:16,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:15:16,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:15:16,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:15:16,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-10-28 10:15:16,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 10:15:16,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:15:16,520 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:15:16,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:15:16,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:15:16,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:15:16,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:15:16,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:15:16,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:15:16,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 10:15:16,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:15:16,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:15:16,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:15:16,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:15:16,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:15:16,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:15:16,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:15:16,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:15:16,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:15:16,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:15:16,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-28 10:15:16,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:15:16,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 10:15:16,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:15:16,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:15:16,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:15:16,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:15:16,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:15:16,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:15:16,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 10:15:16,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:15:16,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:15:16,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:15:16,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-28 10:15:16,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:15:16,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 10:15:16,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:15:16,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:15:16,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:15:16,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:15:16,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:15:16,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:15:16,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-28 10:15:16,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:15:16,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:15:16,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:15:16,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 10:15:16,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:15:16,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 10:15:16,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:15:16,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:15:16,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:15:16,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:15:16,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:15:16,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:15:16,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-28 10:15:16,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:15:16,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:15:16,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:15:16,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-28 10:15:16,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:15:16,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 10:15:16,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:15:16,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:15:16,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:15:16,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:15:16,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 10:15:16,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:15:16,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-28 10:15:16,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:15:16,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:15:16,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:15:16,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-28 10:15:16,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:15:16,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-28 10:15:16,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:15:16,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:15:16,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:15:16,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:15:16,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 10:15:16,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:15:16,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-28 10:15:16,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:15:16,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:15:17,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:15:17,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 10:15:17,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:15:17,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-28 10:15:17,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:15:17,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:15:17,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:15:17,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:15:17,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-28 10:15:17,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:15:17,684 INFO L134 CoverageAnalysis]: Checked inductivity of 586 backedges. 457 proven. 33 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-10-28 10:15:17,684 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1968263118] [2020-10-28 10:15:17,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:15:17,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 10:15:17,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363127994] [2020-10-28 10:15:17,685 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 10:15:17,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:15:17,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 10:15:17,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 10:15:17,686 INFO L87 Difference]: Start difference. First operand 37813 states and 43026 transitions. Second operand 8 states. [2020-10-28 10:15:18,618 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-28 10:15:18,972 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-28 10:15:22,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:15:22,357 INFO L93 Difference]: Finished difference Result 76858 states and 90432 transitions. [2020-10-28 10:15:22,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 10:15:22,358 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 462 [2020-10-28 10:15:22,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:15:22,442 INFO L225 Difference]: With dead ends: 76858 [2020-10-28 10:15:22,442 INFO L226 Difference]: Without dead ends: 39276 [2020-10-28 10:15:22,486 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-10-28 10:15:22,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39276 states.