/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem18_label23.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 00:26:53,962 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 00:26:53,965 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 00:26:54,002 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 00:26:54,003 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 00:26:54,004 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 00:26:54,006 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 00:26:54,009 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 00:26:54,011 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 00:26:54,013 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 00:26:54,015 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 00:26:54,016 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 00:26:54,017 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 00:26:54,018 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 00:26:54,020 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 00:26:54,021 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 00:26:54,022 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 00:26:54,024 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 00:26:54,026 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 00:26:54,047 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 00:26:54,049 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 00:26:54,050 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 00:26:54,052 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 00:26:54,053 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 00:26:54,056 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 00:26:54,057 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 00:26:54,057 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 00:26:54,058 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 00:26:54,059 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 00:26:54,060 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 00:26:54,061 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 00:26:54,062 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 00:26:54,063 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 00:26:54,064 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 00:26:54,065 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 00:26:54,065 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 00:26:54,066 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 00:26:54,066 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 00:26:54,067 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 00:26:54,068 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 00:26:54,069 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 00:26:54,070 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 [2020-10-27 00:26:54,097 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 00:26:54,097 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 00:26:54,099 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 00:26:54,099 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 00:26:54,099 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 00:26:54,099 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 00:26:54,100 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 00:26:54,100 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 00:26:54,100 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 00:26:54,100 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 00:26:54,100 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 00:26:54,101 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 00:26:54,101 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 00:26:54,101 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 00:26:54,101 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 00:26:54,102 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 00:26:54,102 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 00:26:54,102 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 00:26:54,102 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 00:26:54,103 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 00:26:54,103 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 00:26:54,103 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 00:26:54,103 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 00:26:54,104 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 00:26:54,104 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 00:26:54,104 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 00:26:54,104 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 00:26:54,105 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 00:26:54,105 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 00:26:54,105 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 00:26:54,489 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 00:26:54,519 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 00:26:54,522 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 00:26:54,524 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 00:26:54,525 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 00:26:54,526 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label23.c [2020-10-27 00:26:54,602 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/087ef9cee/feff0d06aff843f2b0e74e05f7850f6a/FLAGc526517bd [2020-10-27 00:26:55,578 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 00:26:55,579 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label23.c [2020-10-27 00:26:55,619 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/087ef9cee/feff0d06aff843f2b0e74e05f7850f6a/FLAGc526517bd [2020-10-27 00:26:56,081 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/087ef9cee/feff0d06aff843f2b0e74e05f7850f6a [2020-10-27 00:26:56,084 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 00:26:56,091 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 00:26:56,093 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 00:26:56,093 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 00:26:56,097 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 00:26:56,098 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:26:56" (1/1) ... [2020-10-27 00:26:56,102 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79cde77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:26:56, skipping insertion in model container [2020-10-27 00:26:56,102 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:26:56" (1/1) ... [2020-10-27 00:26:56,111 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 00:26:56,206 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 00:26:57,280 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:26:57,296 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 00:26:58,076 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:26:58,152 INFO L208 MainTranslator]: Completed translation [2020-10-27 00:26:58,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:26:58 WrapperNode [2020-10-27 00:26:58,153 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 00:26:58,155 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 00:26:58,155 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 00:26:58,155 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 00:26:58,173 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:26:58" (1/1) ... [2020-10-27 00:26:58,175 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:26:58" (1/1) ... [2020-10-27 00:26:58,268 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:26:58" (1/1) ... [2020-10-27 00:26:58,268 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:26:58" (1/1) ... [2020-10-27 00:26:58,385 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:26:58" (1/1) ... [2020-10-27 00:26:58,413 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:26:58" (1/1) ... [2020-10-27 00:26:58,445 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:26:58" (1/1) ... [2020-10-27 00:26:58,477 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 00:26:58,478 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 00:26:58,478 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 00:26:58,479 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 00:26:58,480 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:26:58" (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 [2020-10-27 00:26:58,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 00:26:58,567 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 00:26:58,568 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 00:26:58,568 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 00:26:58,568 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 00:26:58,569 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 00:26:58,569 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 00:26:58,570 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 00:26:58,570 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 00:26:58,570 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 00:26:58,571 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 00:26:58,571 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 00:26:58,571 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 00:26:58,571 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 00:26:58,572 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 00:26:58,573 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 00:26:58,573 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 00:26:58,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 00:26:58,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 00:26:58,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 00:26:58,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 00:26:58,574 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 00:26:58,574 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 00:27:02,625 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 00:27:02,626 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 00:27:02,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:27:02 BoogieIcfgContainer [2020-10-27 00:27:02,629 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 00:27:02,631 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 00:27:02,631 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 00:27:02,635 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 00:27:02,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:26:56" (1/3) ... [2020-10-27 00:27:02,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@409cc8c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:27:02, skipping insertion in model container [2020-10-27 00:27:02,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:26:58" (2/3) ... [2020-10-27 00:27:02,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@409cc8c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:27:02, skipping insertion in model container [2020-10-27 00:27:02,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:27:02" (3/3) ... [2020-10-27 00:27:02,639 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label23.c [2020-10-27 00:27:02,652 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 00:27:02,658 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 00:27:02,673 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 00:27:02,709 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 00:27:02,710 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 00:27:02,710 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 00:27:02,710 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 00:27:02,710 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 00:27:02,710 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 00:27:02,710 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 00:27:02,711 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 00:27:02,747 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states. [2020-10-27 00:27:02,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-27 00:27:02,757 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:27:02,758 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] [2020-10-27 00:27:02,759 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:27:02,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:27:02,766 INFO L82 PathProgramCache]: Analyzing trace with hash 1138468224, now seen corresponding path program 1 times [2020-10-27 00:27:02,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:27:02,776 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [172654162] [2020-10-27 00:27:02,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:27:02,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:27:03,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:03,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:27:03,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 00:27:03,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:27:03,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 673 [2020-10-27 00:27:03,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:27:03,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:27:03,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:27:03,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-27 00:27:03,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 00:27:03,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:27:03,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:27:03,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:03,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:27:03,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:27:03,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:27:03,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 00:27:03,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:27:03,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:27:03,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:27:03,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:27:03,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:27:03,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:27:03,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [172654162] [2020-10-27 00:27:03,876 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:27:03,876 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 00:27:03,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815751325] [2020-10-27 00:27:03,882 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 00:27:03,883 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:27:03,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 00:27:03,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 00:27:03,903 INFO L87 Difference]: Start difference. First operand 778 states. Second operand 4 states. [2020-10-27 00:27:15,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:27:15,574 INFO L93 Difference]: Finished difference Result 2275 states and 4354 transitions. [2020-10-27 00:27:15,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 00:27:15,576 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-10-27 00:27:15,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:27:15,607 INFO L225 Difference]: With dead ends: 2275 [2020-10-27 00:27:15,607 INFO L226 Difference]: Without dead ends: 1433 [2020-10-27 00:27:15,618 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 00:27:15,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1433 states. [2020-10-27 00:27:15,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1433 to 1429. [2020-10-27 00:27:15,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1429 states. [2020-10-27 00:27:15,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1429 states to 1429 states and 2323 transitions. [2020-10-27 00:27:15,801 INFO L78 Accepts]: Start accepts. Automaton has 1429 states and 2323 transitions. Word has length 62 [2020-10-27 00:27:15,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:27:15,802 INFO L481 AbstractCegarLoop]: Abstraction has 1429 states and 2323 transitions. [2020-10-27 00:27:15,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 00:27:15,803 INFO L276 IsEmpty]: Start isEmpty. Operand 1429 states and 2323 transitions. [2020-10-27 00:27:15,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-27 00:27:15,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:27:15,818 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:27:15,819 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 00:27:15,819 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:27:15,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:27:15,820 INFO L82 PathProgramCache]: Analyzing trace with hash -620053826, now seen corresponding path program 1 times [2020-10-27 00:27:15,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:27:15,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2090080758] [2020-10-27 00:27:15,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:27:15,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:27:15,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:16,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:17,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:27:17,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-27 00:27:17,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:27:17,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1225 [2020-10-27 00:27:17,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:27:17,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:27:17,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:27:17,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-27 00:27:17,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:27:17,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:27:17,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:27:17,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:17,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:27:17,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:27:17,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:27:17,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 00:27:17,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:27:17,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:27:17,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:27:17,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:27:17,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 00:27:17,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:27:17,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:27:17,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:17,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:27:17,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 00:27:17,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:27:17,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-27 00:27:17,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:27:17,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:27:17,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:27:17,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 00:27:17,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:27:17,707 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:27:17,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2090080758] [2020-10-27 00:27:17,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:27:17,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 00:27:17,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615692748] [2020-10-27 00:27:17,710 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 00:27:17,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:27:17,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 00:27:17,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:27:17,716 INFO L87 Difference]: Start difference. First operand 1429 states and 2323 transitions. Second operand 8 states. [2020-10-27 00:27:38,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:27:38,010 INFO L93 Difference]: Finished difference Result 5748 states and 9430 transitions. [2020-10-27 00:27:38,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:27:38,010 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 131 [2020-10-27 00:27:38,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:27:38,043 INFO L225 Difference]: With dead ends: 5748 [2020-10-27 00:27:38,044 INFO L226 Difference]: Without dead ends: 4325 [2020-10-27 00:27:38,051 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-27 00:27:38,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4325 states. [2020-10-27 00:27:38,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4325 to 4314. [2020-10-27 00:27:38,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4314 states. [2020-10-27 00:27:38,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4314 states to 4314 states and 6027 transitions. [2020-10-27 00:27:38,200 INFO L78 Accepts]: Start accepts. Automaton has 4314 states and 6027 transitions. Word has length 131 [2020-10-27 00:27:38,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:27:38,201 INFO L481 AbstractCegarLoop]: Abstraction has 4314 states and 6027 transitions. [2020-10-27 00:27:38,201 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 00:27:38,201 INFO L276 IsEmpty]: Start isEmpty. Operand 4314 states and 6027 transitions. [2020-10-27 00:27:38,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-27 00:27:38,203 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:27:38,203 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:27:38,204 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 00:27:38,204 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:27:38,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:27:38,205 INFO L82 PathProgramCache]: Analyzing trace with hash 219003396, now seen corresponding path program 1 times [2020-10-27 00:27:38,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:27:38,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [320261939] [2020-10-27 00:27:38,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:27:38,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:27:38,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:38,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:39,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:27:39,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-27 00:27:39,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:27:39,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 786 [2020-10-27 00:27:39,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:27:39,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:27:39,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:27:39,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-27 00:27:39,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:27:39,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:27:39,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:27:39,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:39,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:27:39,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:27:39,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:27:39,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 00:27:39,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:27:39,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:27:39,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:27:39,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:27:39,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:27:39,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:27:39,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:27:39,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:39,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:27:39,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 00:27:39,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:27:39,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-27 00:27:39,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:27:39,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:27:39,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:27:39,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-27 00:27:39,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:27:39,453 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:27:39,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [320261939] [2020-10-27 00:27:39,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:27:39,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 00:27:39,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470406404] [2020-10-27 00:27:39,455 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:27:39,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:27:39,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:27:39,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:27:39,457 INFO L87 Difference]: Start difference. First operand 4314 states and 6027 transitions. Second operand 7 states. [2020-10-27 00:27:56,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:27:56,999 INFO L93 Difference]: Finished difference Result 12450 states and 18433 transitions. [2020-10-27 00:27:57,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:27:57,000 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 134 [2020-10-27 00:27:57,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:27:57,058 INFO L225 Difference]: With dead ends: 12450 [2020-10-27 00:27:57,059 INFO L226 Difference]: Without dead ends: 8142 [2020-10-27 00:27:57,072 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:27:57,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8142 states. [2020-10-27 00:27:57,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8142 to 8009. [2020-10-27 00:27:57,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8009 states. [2020-10-27 00:27:57,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8009 states to 8009 states and 10470 transitions. [2020-10-27 00:27:57,403 INFO L78 Accepts]: Start accepts. Automaton has 8009 states and 10470 transitions. Word has length 134 [2020-10-27 00:27:57,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:27:57,406 INFO L481 AbstractCegarLoop]: Abstraction has 8009 states and 10470 transitions. [2020-10-27 00:27:57,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:27:57,406 INFO L276 IsEmpty]: Start isEmpty. Operand 8009 states and 10470 transitions. [2020-10-27 00:27:57,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-27 00:27:57,410 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:27:57,410 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:27:57,410 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 00:27:57,411 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:27:57,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:27:57,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1968294816, now seen corresponding path program 1 times [2020-10-27 00:27:57,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:27:57,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [68144994] [2020-10-27 00:27:57,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:27:57,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:27:57,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:57,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:58,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:27:58,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-27 00:27:58,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:27:58,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 882 [2020-10-27 00:27:58,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:27:58,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:27:58,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:27:58,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-27 00:27:58,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-27 00:27:58,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:27:58,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:27:58,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:58,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:27:58,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:27:58,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:27:58,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 00:27:58,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:27:58,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:27:58,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:27:58,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:27:58,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:27:58,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:27:58,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:27:58,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:27:58,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:27:58,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 00:27:58,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:27:58,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-27 00:27:58,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:27:58,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:27:58,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:27:58,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-27 00:27:58,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:27:58,833 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:27:58,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [68144994] [2020-10-27 00:27:58,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:27:58,834 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 00:27:58,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605023093] [2020-10-27 00:27:58,835 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:27:58,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:27:58,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:27:58,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:27:58,846 INFO L87 Difference]: Start difference. First operand 8009 states and 10470 transitions. Second operand 7 states. [2020-10-27 00:28:12,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:28:12,426 INFO L93 Difference]: Finished difference Result 18420 states and 23886 transitions. [2020-10-27 00:28:12,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 00:28:12,427 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 152 [2020-10-27 00:28:12,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:28:12,477 INFO L225 Difference]: With dead ends: 18420 [2020-10-27 00:28:12,478 INFO L226 Difference]: Without dead ends: 10417 [2020-10-27 00:28:12,496 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-27 00:28:12,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10417 states. [2020-10-27 00:28:12,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10417 to 10244. [2020-10-27 00:28:12,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10244 states. [2020-10-27 00:28:12,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10244 states to 10244 states and 12891 transitions. [2020-10-27 00:28:12,750 INFO L78 Accepts]: Start accepts. Automaton has 10244 states and 12891 transitions. Word has length 152 [2020-10-27 00:28:12,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:28:12,751 INFO L481 AbstractCegarLoop]: Abstraction has 10244 states and 12891 transitions. [2020-10-27 00:28:12,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:28:12,751 INFO L276 IsEmpty]: Start isEmpty. Operand 10244 states and 12891 transitions. [2020-10-27 00:28:12,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-27 00:28:12,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:28:12,753 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:28:12,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 00:28:12,754 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:28:12,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:28:12,755 INFO L82 PathProgramCache]: Analyzing trace with hash 1348356358, now seen corresponding path program 1 times [2020-10-27 00:28:12,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:28:12,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1042270548] [2020-10-27 00:28:12,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:28:12,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:12,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:12,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:13,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:15,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:15,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-27 00:28:15,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:28:15,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2302 [2020-10-27 00:28:15,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:15,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:28:15,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:28:15,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-27 00:28:15,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:15,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:28:15,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:15,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:15,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:15,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:28:15,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:28:15,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 00:28:15,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:15,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:28:15,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:28:15,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:28:15,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:15,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:28:15,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:15,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:15,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:15,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 00:28:15,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:28:15,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-27 00:28:15,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:15,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:28:15,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:28:15,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-27 00:28:15,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:15,680 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:28:15,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1042270548] [2020-10-27 00:28:15,681 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:28:15,681 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 00:28:15,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76774062] [2020-10-27 00:28:15,682 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:28:15,682 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:28:15,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:28:15,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:28:15,683 INFO L87 Difference]: Start difference. First operand 10244 states and 12891 transitions. Second operand 7 states. [2020-10-27 00:28:29,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:28:29,806 INFO L93 Difference]: Finished difference Result 19275 states and 24696 transitions. [2020-10-27 00:28:29,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:28:29,809 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 159 [2020-10-27 00:28:29,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:28:29,864 INFO L225 Difference]: With dead ends: 19275 [2020-10-27 00:28:29,865 INFO L226 Difference]: Without dead ends: 11159 [2020-10-27 00:28:29,882 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:28:29,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11159 states. [2020-10-27 00:28:30,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11159 to 10980. [2020-10-27 00:28:30,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10980 states. [2020-10-27 00:28:30,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10980 states to 10980 states and 13656 transitions. [2020-10-27 00:28:30,167 INFO L78 Accepts]: Start accepts. Automaton has 10980 states and 13656 transitions. Word has length 159 [2020-10-27 00:28:30,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:28:30,168 INFO L481 AbstractCegarLoop]: Abstraction has 10980 states and 13656 transitions. [2020-10-27 00:28:30,169 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:28:30,169 INFO L276 IsEmpty]: Start isEmpty. Operand 10980 states and 13656 transitions. [2020-10-27 00:28:30,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2020-10-27 00:28:30,173 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:28:30,174 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:28:30,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 00:28:30,174 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:28:30,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:28:30,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1361084128, now seen corresponding path program 1 times [2020-10-27 00:28:30,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:28:30,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [322340302] [2020-10-27 00:28:30,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:28:30,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:30,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:30,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:30,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:30,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-27 00:28:30,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:28:30,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 435 [2020-10-27 00:28:30,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:30,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:28:30,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-27 00:28:30,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-27 00:28:30,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:30,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:28:30,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:30,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:30,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:30,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:28:30,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:28:30,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 00:28:30,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:30,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:28:30,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:28:30,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:28:30,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:30,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:28:30,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:30,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:31,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:31,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-27 00:28:31,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:28:31,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-10-27 00:28:31,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:31,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:28:31,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:28:31,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-27 00:28:31,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:31,340 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 53 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:28:31,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [322340302] [2020-10-27 00:28:31,342 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:28:31,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 00:28:31,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241017623] [2020-10-27 00:28:31,344 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 00:28:31,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:28:31,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 00:28:31,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 00:28:31,345 INFO L87 Difference]: Start difference. First operand 10980 states and 13656 transitions. Second operand 5 states. [2020-10-27 00:28:45,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:28:45,382 INFO L93 Difference]: Finished difference Result 24197 states and 31752 transitions. [2020-10-27 00:28:45,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 00:28:45,389 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 248 [2020-10-27 00:28:45,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:28:45,437 INFO L225 Difference]: With dead ends: 24197 [2020-10-27 00:28:45,437 INFO L226 Difference]: Without dead ends: 14635 [2020-10-27 00:28:45,458 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 00:28:45,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14635 states. [2020-10-27 00:28:45,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14635 to 14624. [2020-10-27 00:28:45,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14624 states. [2020-10-27 00:28:45,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14624 states to 14624 states and 18314 transitions. [2020-10-27 00:28:45,878 INFO L78 Accepts]: Start accepts. Automaton has 14624 states and 18314 transitions. Word has length 248 [2020-10-27 00:28:45,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:28:45,879 INFO L481 AbstractCegarLoop]: Abstraction has 14624 states and 18314 transitions. [2020-10-27 00:28:45,879 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 00:28:45,879 INFO L276 IsEmpty]: Start isEmpty. Operand 14624 states and 18314 transitions. [2020-10-27 00:28:45,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2020-10-27 00:28:45,888 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:28:45,889 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:28:45,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 00:28:45,889 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:28:45,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:28:45,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1177458496, now seen corresponding path program 1 times [2020-10-27 00:28:45,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:28:45,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [66273823] [2020-10-27 00:28:45,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:28:45,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:45,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:46,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:46,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:47,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:47,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 384 [2020-10-27 00:28:47,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:28:47,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1719 [2020-10-27 00:28:47,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:47,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:28:47,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-27 00:28:47,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 00:28:47,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:47,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:28:47,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:47,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:47,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:47,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:28:47,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:28:47,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:28:47,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:47,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:28:47,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:28:47,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:28:47,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:47,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:28:47,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:47,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:48,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:48,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-27 00:28:48,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:28:48,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-27 00:28:48,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:48,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:28:48,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:28:48,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-27 00:28:48,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:48,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-27 00:28:48,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:28:48,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:48,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:28:48,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:28:48,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:28:48,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:28:48,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 277 [2020-10-27 00:28:48,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:28:48,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:28:48,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:28:48,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:28:48,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:28:49,039 INFO L134 CoverageAnalysis]: Checked inductivity of 230 backedges. 227 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 00:28:49,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [66273823] [2020-10-27 00:28:49,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:28:49,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:28:49,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243586105] [2020-10-27 00:28:49,041 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:28:49,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:28:49,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:28:49,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:28:49,043 INFO L87 Difference]: Start difference. First operand 14624 states and 18314 transitions. Second operand 7 states. [2020-10-27 00:28:50,197 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-27 00:29:02,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:29:02,460 INFO L93 Difference]: Finished difference Result 27391 states and 35080 transitions. [2020-10-27 00:29:02,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:29:02,465 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 370 [2020-10-27 00:29:02,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:29:02,505 INFO L225 Difference]: With dead ends: 27391 [2020-10-27 00:29:02,505 INFO L226 Difference]: Without dead ends: 13965 [2020-10-27 00:29:02,529 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:29:02,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13965 states. [2020-10-27 00:29:02,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13965 to 13903. [2020-10-27 00:29:02,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13903 states. [2020-10-27 00:29:02,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13903 states to 13903 states and 16238 transitions. [2020-10-27 00:29:02,785 INFO L78 Accepts]: Start accepts. Automaton has 13903 states and 16238 transitions. Word has length 370 [2020-10-27 00:29:02,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:29:02,785 INFO L481 AbstractCegarLoop]: Abstraction has 13903 states and 16238 transitions. [2020-10-27 00:29:02,785 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:29:02,786 INFO L276 IsEmpty]: Start isEmpty. Operand 13903 states and 16238 transitions. [2020-10-27 00:29:02,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 987 [2020-10-27 00:29:02,820 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:29:02,821 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:29:02,822 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 00:29:02,822 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:29:02,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:29:02,823 INFO L82 PathProgramCache]: Analyzing trace with hash -44993774, now seen corresponding path program 1 times [2020-10-27 00:29:02,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:29:02,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [100316318] [2020-10-27 00:29:02,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:29:03,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:03,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:03,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:08,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:08,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1008 [2020-10-27 00:29:08,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:29:08,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5126 [2020-10-27 00:29:08,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:08,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:29:08,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-27 00:29:08,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-27 00:29:08,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:08,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:29:08,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:08,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:08,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:08,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:29:08,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:08,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:29:08,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:08,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:29:08,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:29:08,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:29:08,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:08,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:29:08,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:08,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:08,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:08,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:29:08,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:08,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-27 00:29:08,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:08,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:29:08,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:29:08,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:29:08,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:08,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:29:08,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:08,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:08,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:08,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:29:08,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:08,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-27 00:29:08,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:08,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:29:08,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:29:08,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:29:08,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:09,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:29:09,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:09,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:09,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:09,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:29:09,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:09,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 00:29:09,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:09,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:29:09,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:29:09,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:29:09,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:09,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:29:09,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:09,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:09,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:09,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:29:09,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:09,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 252 [2020-10-27 00:29:09,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:09,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:29:09,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:29:09,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-27 00:29:09,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:09,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:29:09,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:09,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:09,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:09,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:29:09,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:09,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 00:29:09,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:09,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:29:09,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:29:09,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 00:29:09,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:09,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:29:09,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:09,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:10,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:10,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 00:29:10,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:10,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-27 00:29:10,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:10,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:29:10,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:29:10,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-27 00:29:10,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:10,603 INFO L134 CoverageAnalysis]: Checked inductivity of 649 backedges. 344 proven. 2 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2020-10-27 00:29:10,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [100316318] [2020-10-27 00:29:10,604 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:29:10,604 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:29:10,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280579026] [2020-10-27 00:29:10,606 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:29:10,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:29:10,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:29:10,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:29:10,607 INFO L87 Difference]: Start difference. First operand 13903 states and 16238 transitions. Second operand 7 states. [2020-10-27 00:29:27,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:29:27,098 INFO L93 Difference]: Finished difference Result 37281 states and 45241 transitions. [2020-10-27 00:29:27,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:29:27,100 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 986 [2020-10-27 00:29:27,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:29:27,176 INFO L225 Difference]: With dead ends: 37281 [2020-10-27 00:29:27,176 INFO L226 Difference]: Without dead ends: 24796 [2020-10-27 00:29:27,201 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:29:27,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24796 states. [2020-10-27 00:29:27,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24796 to 24730. [2020-10-27 00:29:27,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24730 states. [2020-10-27 00:29:27,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24730 states to 24730 states and 28801 transitions. [2020-10-27 00:29:27,677 INFO L78 Accepts]: Start accepts. Automaton has 24730 states and 28801 transitions. Word has length 986 [2020-10-27 00:29:27,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:29:27,680 INFO L481 AbstractCegarLoop]: Abstraction has 24730 states and 28801 transitions. [2020-10-27 00:29:27,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:29:27,680 INFO L276 IsEmpty]: Start isEmpty. Operand 24730 states and 28801 transitions. [2020-10-27 00:29:27,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1019 [2020-10-27 00:29:27,728 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:29:27,729 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:29:27,729 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 00:29:27,729 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:29:27,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:29:27,730 INFO L82 PathProgramCache]: Analyzing trace with hash 138503890, now seen corresponding path program 1 times [2020-10-27 00:29:27,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:29:27,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [361923851] [2020-10-27 00:29:27,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:29:27,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:28,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:28,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:33,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:33,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1040 [2020-10-27 00:29:33,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:29:33,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5071 [2020-10-27 00:29:33,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:33,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:29:33,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-27 00:29:33,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-27 00:29:33,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:33,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:29:33,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:33,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:33,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:33,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:29:33,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:33,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:29:33,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:33,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:29:33,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:29:33,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:29:33,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:33,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:29:33,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:33,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:33,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:33,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:29:33,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:33,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-27 00:29:33,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:33,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:29:33,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:29:33,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:29:33,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:33,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:29:33,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:33,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:33,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:33,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:29:33,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:33,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 00:29:33,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:33,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:29:33,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:29:33,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:29:33,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:33,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:29:33,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:33,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:33,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:33,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:29:33,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:33,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:29:33,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:33,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:29:33,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:29:33,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:29:33,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:33,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:29:33,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:33,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:34,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:34,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:29:34,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:34,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-27 00:29:34,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:34,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:29:34,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:29:34,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-27 00:29:34,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:34,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:29:34,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:34,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:34,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:34,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:29:34,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:34,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 00:29:34,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:34,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:29:34,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:29:34,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 00:29:34,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:34,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:29:34,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:34,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:34,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:34,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 00:29:34,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:34,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-27 00:29:34,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:34,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:29:34,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:29:34,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 00:29:34,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:35,022 INFO L134 CoverageAnalysis]: Checked inductivity of 713 backedges. 408 proven. 2 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2020-10-27 00:29:35,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [361923851] [2020-10-27 00:29:35,023 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:29:35,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:29:35,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243611105] [2020-10-27 00:29:35,024 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:29:35,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:29:35,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:29:35,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:29:35,025 INFO L87 Difference]: Start difference. First operand 24730 states and 28801 transitions. Second operand 7 states. [2020-10-27 00:29:47,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:29:47,430 INFO L93 Difference]: Finished difference Result 56160 states and 67264 transitions. [2020-10-27 00:29:47,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:29:47,431 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1018 [2020-10-27 00:29:47,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:29:47,659 INFO L225 Difference]: With dead ends: 56160 [2020-10-27 00:29:47,659 INFO L226 Difference]: Without dead ends: 32848 [2020-10-27 00:29:47,690 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:29:47,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32848 states. [2020-10-27 00:29:48,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32848 to 32785. [2020-10-27 00:29:48,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32785 states. [2020-10-27 00:29:48,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32785 states to 32785 states and 38337 transitions. [2020-10-27 00:29:48,329 INFO L78 Accepts]: Start accepts. Automaton has 32785 states and 38337 transitions. Word has length 1018 [2020-10-27 00:29:48,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:29:48,331 INFO L481 AbstractCegarLoop]: Abstraction has 32785 states and 38337 transitions. [2020-10-27 00:29:48,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:29:48,331 INFO L276 IsEmpty]: Start isEmpty. Operand 32785 states and 38337 transitions. [2020-10-27 00:29:48,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1130 [2020-10-27 00:29:48,349 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:29:48,350 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:29:48,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 00:29:48,351 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:29:48,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:29:48,351 INFO L82 PathProgramCache]: Analyzing trace with hash -1803511848, now seen corresponding path program 1 times [2020-10-27 00:29:48,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:29:48,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [117527259] [2020-10-27 00:29:48,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:29:48,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:48,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:48,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:53,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:53,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1153 [2020-10-27 00:29:53,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:29:53,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5079 [2020-10-27 00:29:53,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:53,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:29:53,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 997 [2020-10-27 00:29:53,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-27 00:29:53,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:53,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:29:53,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:53,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:53,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:53,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:29:53,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:53,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:29:53,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:53,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:29:53,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:29:53,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:29:53,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:53,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:29:53,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:53,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:54,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:54,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:29:54,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:54,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-27 00:29:54,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:54,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:29:54,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:29:54,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:29:54,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:54,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:29:54,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:54,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:54,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:54,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:29:54,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:54,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-27 00:29:54,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:54,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:29:54,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:29:54,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:29:54,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:54,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:29:54,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:54,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:54,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:54,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:29:54,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:54,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:29:54,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:54,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:29:54,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:29:54,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:29:54,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:54,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:29:54,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:54,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:54,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:54,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:29:54,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:54,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-27 00:29:54,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:54,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:29:54,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:29:54,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:29:54,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:54,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:29:54,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:54,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:54,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:54,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:29:54,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:54,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 00:29:54,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:54,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:29:54,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:29:54,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:29:54,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:54,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:29:54,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:54,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:54,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:54,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-27 00:29:54,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:54,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-27 00:29:54,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:54,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:29:54,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:29:54,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-27 00:29:54,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:54,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-27 00:29:54,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:29:54,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:29:54,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:29:54,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 00:29:54,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:29:54,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-27 00:29:54,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:29:54,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:29:54,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:29:54,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-27 00:29:54,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:29:55,525 INFO L134 CoverageAnalysis]: Checked inductivity of 1079 backedges. 487 proven. 2 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2020-10-27 00:29:55,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [117527259] [2020-10-27 00:29:55,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:29:55,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 00:29:55,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891671249] [2020-10-27 00:29:55,527 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 00:29:55,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:29:55,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 00:29:55,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:29:55,528 INFO L87 Difference]: Start difference. First operand 32785 states and 38337 transitions. Second operand 8 states. [2020-10-27 00:30:17,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:30:17,779 INFO L93 Difference]: Finished difference Result 72895 states and 87153 transitions. [2020-10-27 00:30:17,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 00:30:17,781 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1129 [2020-10-27 00:30:17,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:30:17,896 INFO L225 Difference]: With dead ends: 72895 [2020-10-27 00:30:17,896 INFO L226 Difference]: Without dead ends: 40818 [2020-10-27 00:30:17,944 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-27 00:30:17,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40818 states. [2020-10-27 00:30:18,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40818 to 40084. [2020-10-27 00:30:18,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40084 states. [2020-10-27 00:30:18,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40084 states to 40084 states and 46204 transitions. [2020-10-27 00:30:18,743 INFO L78 Accepts]: Start accepts. Automaton has 40084 states and 46204 transitions. Word has length 1129 [2020-10-27 00:30:18,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:30:18,744 INFO L481 AbstractCegarLoop]: Abstraction has 40084 states and 46204 transitions. [2020-10-27 00:30:18,744 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 00:30:18,744 INFO L276 IsEmpty]: Start isEmpty. Operand 40084 states and 46204 transitions. [2020-10-27 00:30:18,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1151 [2020-10-27 00:30:18,765 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:30:18,766 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:30:18,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 00:30:18,766 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:30:18,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:30:18,767 INFO L82 PathProgramCache]: Analyzing trace with hash 643598066, now seen corresponding path program 1 times [2020-10-27 00:30:18,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:30:18,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1748918756] [2020-10-27 00:30:18,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:30:18,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:19,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:20,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:20,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1174 [2020-10-27 00:30:20,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:20,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1537 [2020-10-27 00:30:20,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:20,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:30:20,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1110 [2020-10-27 00:30:20,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-27 00:30:20,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:20,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:30:20,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:20,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:20,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:20,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:30:20,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:20,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:30:20,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:20,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:30:20,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:20,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:30:20,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:20,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:30:20,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:20,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:20,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:20,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:30:20,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:20,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-27 00:30:20,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:20,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:30:20,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:20,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:30:20,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:21,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:30:21,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:21,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:21,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:21,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:30:21,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:21,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 00:30:21,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:21,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:30:21,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:21,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:30:21,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:21,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:30:21,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:21,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:21,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:21,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:30:21,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:21,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:30:21,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:21,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:30:21,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:21,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:30:21,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:21,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:30:21,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:21,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:21,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:21,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:30:21,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:21,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-27 00:30:21,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:21,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:30:21,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:21,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:30:21,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:21,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:30:21,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:21,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:21,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:21,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:30:21,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:21,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 00:30:21,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:21,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:30:21,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:21,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:30:21,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:21,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:30:21,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:21,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:21,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:21,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-27 00:30:21,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:21,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 00:30:21,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:21,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:30:21,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:21,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:30:21,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:21,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-27 00:30:21,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:21,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:21,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:21,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 00:30:21,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:21,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-27 00:30:21,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:21,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:30:21,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:21,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-27 00:30:21,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:22,366 INFO L134 CoverageAnalysis]: Checked inductivity of 1142 backedges. 221 proven. 4 refuted. 0 times theorem prover too weak. 917 trivial. 0 not checked. [2020-10-27 00:30:22,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1748918756] [2020-10-27 00:30:22,366 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:30:22,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 00:30:22,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571785048] [2020-10-27 00:30:22,367 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 00:30:22,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:30:22,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 00:30:22,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 00:30:22,368 INFO L87 Difference]: Start difference. First operand 40084 states and 46204 transitions. Second operand 5 states. [2020-10-27 00:30:30,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:30:30,917 INFO L93 Difference]: Finished difference Result 79464 states and 91716 transitions. [2020-10-27 00:30:30,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 00:30:30,919 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1150 [2020-10-27 00:30:30,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:30:31,027 INFO L225 Difference]: With dead ends: 79464 [2020-10-27 00:30:31,028 INFO L226 Difference]: Without dead ends: 40798 [2020-10-27 00:30:31,078 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 00:30:31,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40798 states. [2020-10-27 00:30:31,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40798 to 40085. [2020-10-27 00:30:31,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40085 states. [2020-10-27 00:30:31,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40085 states to 40085 states and 45992 transitions. [2020-10-27 00:30:31,785 INFO L78 Accepts]: Start accepts. Automaton has 40085 states and 45992 transitions. Word has length 1150 [2020-10-27 00:30:31,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:30:31,786 INFO L481 AbstractCegarLoop]: Abstraction has 40085 states and 45992 transitions. [2020-10-27 00:30:31,786 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 00:30:31,787 INFO L276 IsEmpty]: Start isEmpty. Operand 40085 states and 45992 transitions. [2020-10-27 00:30:31,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1206 [2020-10-27 00:30:31,812 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:30:31,813 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:30:31,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 00:30:31,814 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:30:31,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:30:31,815 INFO L82 PathProgramCache]: Analyzing trace with hash 286948564, now seen corresponding path program 1 times [2020-10-27 00:30:31,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:30:31,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [65878021] [2020-10-27 00:30:31,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:30:32,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:32,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:32,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:34,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:37,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:37,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1231 [2020-10-27 00:30:37,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:30:37,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-27 00:30:37,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:37,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:30:37,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 997 [2020-10-27 00:30:37,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-27 00:30:37,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:37,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:30:37,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:37,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:37,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:37,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:30:37,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:37,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:30:37,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:37,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:30:37,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:37,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:30:37,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:37,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:30:37,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:37,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:37,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:37,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-27 00:30:37,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:37,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-27 00:30:37,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:37,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:30:37,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:37,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:30:37,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:37,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:30:37,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:37,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:37,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:37,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 00:30:37,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:37,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-27 00:30:37,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:37,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:30:37,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:37,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:30:37,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:37,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 00:30:37,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:37,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:37,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:37,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 00:30:37,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:37,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:30:37,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:37,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:30:37,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:37,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:30:37,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:37,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-27 00:30:37,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:37,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:38,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:38,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:30:38,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:38,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-27 00:30:38,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:38,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:30:38,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:38,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:30:38,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:38,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:30:38,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:38,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:38,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:38,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:30:38,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:38,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 00:30:38,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:38,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:30:38,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:38,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:30:38,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:38,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-27 00:30:38,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:38,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:38,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:38,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-27 00:30:38,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:38,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-27 00:30:38,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:38,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:30:38,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:30:38,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-27 00:30:38,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:38,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-27 00:30:38,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:38,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:38,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:38,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 00:30:38,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:38,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 00:30:38,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:38,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:30:38,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:30:38,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-27 00:30:38,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:38,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1061 [2020-10-27 00:30:38,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:30:38,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:30:38,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:30:38,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 00:30:38,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:30:38,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 00:30:38,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:30:38,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:30:38,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-27 00:30:38,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:30:38,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:30:39,101 INFO L134 CoverageAnalysis]: Checked inductivity of 1437 backedges. 511 proven. 75 refuted. 0 times theorem prover too weak. 851 trivial. 0 not checked. [2020-10-27 00:30:39,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [65878021] [2020-10-27 00:30:39,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:30:39,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:30:39,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925022374] [2020-10-27 00:30:39,103 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:30:39,104 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:30:39,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:30:39,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:30:39,104 INFO L87 Difference]: Start difference. First operand 40085 states and 45992 transitions. Second operand 7 states.