/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label17.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:43:43,168 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:43:43,172 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:43:43,235 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:43:43,236 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:43:43,244 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:43:43,246 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:43:43,252 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:43:43,256 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:43:43,264 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:43:43,265 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:43:43,267 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:43:43,267 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:43:43,271 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:43:43,275 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:43:43,277 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:43:43,279 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:43:43,283 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:43:43,291 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:43:43,298 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:43:43,301 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:43:43,303 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:43:43,304 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:43:43,307 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:43:43,328 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:43:43,328 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:43:43,335 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:43:43,337 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:43:43,340 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:43:43,342 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-10-29 07:43:43,366 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:43:43,370 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:43:43,371 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:43:43,373 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 07:43:43,401 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:43:43,401 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:43:43,403 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:43:43,403 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:43:43,403 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:43:43,403 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:43:43,404 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:43:43,404 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:43:43,404 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:43:43,404 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:43:43,404 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:43:43,405 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:43:43,405 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:43:43,405 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:43:43,405 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:43:43,405 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:43:43,406 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:43:43,406 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:43:43,406 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:43:43,406 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:43:43,406 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:43:43,407 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:43:43,407 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:43:43,407 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:43:43,407 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:43:43,407 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:43:43,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:43:43,408 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:43:43,408 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:43:43,408 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:43:43,791 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:43:43,824 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:43:43,829 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:43:43,830 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:43:43,831 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:43:43,832 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label17.c [2020-10-29 07:43:43,905 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2e5801b4c/510b9d6e296b422cac95542199a9a8a2/FLAGb3ab53496 [2020-10-29 07:43:44,872 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:43:44,875 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label17.c [2020-10-29 07:43:44,915 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2e5801b4c/510b9d6e296b422cac95542199a9a8a2/FLAGb3ab53496 [2020-10-29 07:43:44,948 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2e5801b4c/510b9d6e296b422cac95542199a9a8a2 [2020-10-29 07:43:44,952 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:43:44,962 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:43:44,966 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:43:44,967 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:43:44,971 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:43:44,973 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:43:44" (1/1) ... [2020-10-29 07:43:44,982 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22c19627 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:43:44, skipping insertion in model container [2020-10-29 07:43:44,982 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:43:44" (1/1) ... [2020-10-29 07:43:44,992 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:43:45,082 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:43:46,024 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:43:46,036 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:43:46,380 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:43:46,407 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:43:46,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:43:46 WrapperNode [2020-10-29 07:43:46,408 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:43:46,410 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:43:46,411 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:43:46,411 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:43:46,427 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:43:46" (1/1) ... [2020-10-29 07:43:46,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:43:46" (1/1) ... [2020-10-29 07:43:46,494 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:43:46" (1/1) ... [2020-10-29 07:43:46,495 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:43:46" (1/1) ... [2020-10-29 07:43:46,590 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:43:46" (1/1) ... [2020-10-29 07:43:46,622 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:43:46" (1/1) ... [2020-10-29 07:43:46,645 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:43:46" (1/1) ... [2020-10-29 07:43:46,671 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:43:46,673 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:43:46,674 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:43:46,674 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:43:46,675 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:43:46" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:43:46,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:43:46,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:43:46,758 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:43:46,759 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:43:46,759 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 07:43:46,759 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:43:46,759 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:43:46,759 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 07:43:46,760 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:43:46,760 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:43:46,760 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:43:46,760 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:43:46,760 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:43:46,761 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:43:46,761 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:43:46,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:43:46,761 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:43:46,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:43:46,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:43:46,762 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:43:46,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:43:50,256 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:43:50,256 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:43:50,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:43:50 BoogieIcfgContainer [2020-10-29 07:43:50,261 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:43:50,266 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:43:50,266 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:43:50,270 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:43:50,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:43:44" (1/3) ... [2020-10-29 07:43:50,273 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@448a7de8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:43:50, skipping insertion in model container [2020-10-29 07:43:50,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:43:46" (2/3) ... [2020-10-29 07:43:50,274 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@448a7de8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:43:50, skipping insertion in model container [2020-10-29 07:43:50,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:43:50" (3/3) ... [2020-10-29 07:43:50,276 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label17.c [2020-10-29 07:43:50,290 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:43:50,297 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:43:50,312 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:43:50,361 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:43:50,361 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:43:50,361 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:43:50,362 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:43:50,362 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:43:50,362 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:43:50,362 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:43:50,362 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:43:50,408 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-29 07:43:50,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-29 07:43:50,430 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:43:50,431 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:43:50,432 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:43:50,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:43:50,441 INFO L82 PathProgramCache]: Analyzing trace with hash 1574864969, now seen corresponding path program 1 times [2020-10-29 07:43:50,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:43:50,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [970984459] [2020-10-29 07:43:50,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:43:50,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:50,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:51,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:51,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 07:43:51,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:51,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 660 [2020-10-29 07:43:51,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:51,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:51,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:43:51,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:43:51,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 07:43:51,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:43:51,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:43:51,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:43:51,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:43:51,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:43:51,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:43:51,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:43:51,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 07:43:51,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:43:51,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:43:51,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:43:51,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:43:51,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:43:51,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:43:51,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:43:51,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [970984459] [2020-10-29 07:43:51,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:43:51,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 07:43:51,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287061129] [2020-10-29 07:43:51,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 07:43:51,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:43:51,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 07:43:51,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 07:43:51,727 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 4 states. [2020-10-29 07:44:00,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:44:00,238 INFO L93 Difference]: Finished difference Result 1208 states and 2172 transitions. [2020-10-29 07:44:00,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:44:00,240 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 70 [2020-10-29 07:44:00,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:44:00,267 INFO L225 Difference]: With dead ends: 1208 [2020-10-29 07:44:00,267 INFO L226 Difference]: Without dead ends: 703 [2020-10-29 07:44:00,277 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:44:00,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2020-10-29 07:44:00,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 697. [2020-10-29 07:44:00,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 697 states. [2020-10-29 07:44:00,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 1016 transitions. [2020-10-29 07:44:00,410 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 1016 transitions. Word has length 70 [2020-10-29 07:44:00,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:44:00,411 INFO L481 AbstractCegarLoop]: Abstraction has 697 states and 1016 transitions. [2020-10-29 07:44:00,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 07:44:00,411 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 1016 transitions. [2020-10-29 07:44:00,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-29 07:44:00,418 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:44:00,419 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:44:00,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:44:00,419 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:44:00,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:44:00,420 INFO L82 PathProgramCache]: Analyzing trace with hash -2085188893, now seen corresponding path program 1 times [2020-10-29 07:44:00,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:44:00,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [357781463] [2020-10-29 07:44:00,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:44:00,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:00,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:00,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:02,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:02,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:02,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-29 07:44:02,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:44:02,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1698 [2020-10-29 07:44:02,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:02,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:02,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:44:02,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:44:02,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-29 07:44:02,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:44:02,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:44:02,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:02,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:02,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:02,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:44:02,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:02,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 07:44:02,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:02,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:02,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:44:02,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:44:02,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:44:02,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:44:02,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:44:02,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:02,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:02,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:02,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:02,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 07:44:02,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:44:02,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 422 [2020-10-29 07:44:02,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:02,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:02,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:44:02,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:44:02,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 07:44:02,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:44:03,016 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 59 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 07:44:03,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [357781463] [2020-10-29 07:44:03,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:44:03,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 07:44:03,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836918810] [2020-10-29 07:44:03,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:44:03,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:44:03,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:44:03,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:44:03,025 INFO L87 Difference]: Start difference. First operand 697 states and 1016 transitions. Second operand 7 states. [2020-10-29 07:44:15,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:44:15,111 INFO L93 Difference]: Finished difference Result 2043 states and 2991 transitions. [2020-10-29 07:44:15,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:44:15,112 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 149 [2020-10-29 07:44:15,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:44:15,122 INFO L225 Difference]: With dead ends: 2043 [2020-10-29 07:44:15,123 INFO L226 Difference]: Without dead ends: 1352 [2020-10-29 07:44:15,126 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:44:15,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1352 states. [2020-10-29 07:44:15,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1352 to 1322. [2020-10-29 07:44:15,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1322 states. [2020-10-29 07:44:15,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1322 states to 1322 states and 1713 transitions. [2020-10-29 07:44:15,197 INFO L78 Accepts]: Start accepts. Automaton has 1322 states and 1713 transitions. Word has length 149 [2020-10-29 07:44:15,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:44:15,200 INFO L481 AbstractCegarLoop]: Abstraction has 1322 states and 1713 transitions. [2020-10-29 07:44:15,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:44:15,200 INFO L276 IsEmpty]: Start isEmpty. Operand 1322 states and 1713 transitions. [2020-10-29 07:44:15,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-10-29 07:44:15,216 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:44:15,216 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:44:15,216 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:44:15,217 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:44:15,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:44:15,221 INFO L82 PathProgramCache]: Analyzing trace with hash 746178832, now seen corresponding path program 1 times [2020-10-29 07:44:15,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:44:15,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1444496383] [2020-10-29 07:44:15,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:44:15,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:15,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:15,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:15,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:17,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:19,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:20,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:20,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 258 [2020-10-29 07:44:20,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:44:20,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 07:44:20,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:20,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:20,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:44:20,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:44:20,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-29 07:44:20,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:44:20,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:44:20,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:20,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:20,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:20,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:44:20,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:20,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 07:44:20,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:20,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:20,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:44:20,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:44:20,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:44:20,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:20,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:44:20,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:20,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:20,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:20,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 07:44:20,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:20,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-29 07:44:20,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:20,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:20,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:44:20,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:44:20,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-29 07:44:20,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:44:20,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 07:44:20,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:20,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:20,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:20,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 07:44:20,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:20,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-29 07:44:20,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:20,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:20,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:44:20,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:44:20,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 07:44:20,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:44:21,051 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 125 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-29 07:44:21,052 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1444496383] [2020-10-29 07:44:21,052 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:44:21,052 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 07:44:21,052 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015818511] [2020-10-29 07:44:21,053 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:44:21,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:44:21,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:44:21,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:44:21,055 INFO L87 Difference]: Start difference. First operand 1322 states and 1713 transitions. Second operand 7 states. [2020-10-29 07:44:31,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:44:31,020 INFO L93 Difference]: Finished difference Result 2675 states and 3695 transitions. [2020-10-29 07:44:31,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:44:31,023 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 244 [2020-10-29 07:44:31,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:44:31,038 INFO L225 Difference]: With dead ends: 2675 [2020-10-29 07:44:31,039 INFO L226 Difference]: Without dead ends: 1977 [2020-10-29 07:44:31,044 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:44:31,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1977 states. [2020-10-29 07:44:31,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1977 to 1944. [2020-10-29 07:44:31,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1944 states. [2020-10-29 07:44:31,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1944 states to 1944 states and 2406 transitions. [2020-10-29 07:44:31,151 INFO L78 Accepts]: Start accepts. Automaton has 1944 states and 2406 transitions. Word has length 244 [2020-10-29 07:44:31,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:44:31,153 INFO L481 AbstractCegarLoop]: Abstraction has 1944 states and 2406 transitions. [2020-10-29 07:44:31,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:44:31,154 INFO L276 IsEmpty]: Start isEmpty. Operand 1944 states and 2406 transitions. [2020-10-29 07:44:31,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2020-10-29 07:44:31,162 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:44:31,163 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:44:31,163 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:44:31,163 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:44:31,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:44:31,164 INFO L82 PathProgramCache]: Analyzing trace with hash 36192260, now seen corresponding path program 1 times [2020-10-29 07:44:31,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:44:31,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1129572557] [2020-10-29 07:44:31,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:44:31,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:31,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:31,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:31,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:36,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:36,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 364 [2020-10-29 07:44:36,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:44:36,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-29 07:44:36,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:36,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:36,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:44:36,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:44:36,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-29 07:44:36,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:44:36,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:44:36,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:36,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:36,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:36,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:44:36,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:36,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 07:44:36,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:36,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:36,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:44:36,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:44:36,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:44:36,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 07:44:36,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:44:36,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:36,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:37,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:37,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 07:44:37,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:37,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 466 [2020-10-29 07:44:37,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:37,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:37,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:44:37,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:44:37,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-29 07:44:37,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:37,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-29 07:44:37,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:37,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:37,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:37,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 07:44:37,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:37,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-29 07:44:37,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:37,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:37,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:44:37,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-29 07:44:37,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:44:37,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:44:38,141 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 124 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 07:44:38,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1129572557] [2020-10-29 07:44:38,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:44:38,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:44:38,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472126688] [2020-10-29 07:44:38,143 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:44:38,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:44:38,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:44:38,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:44:38,145 INFO L87 Difference]: Start difference. First operand 1944 states and 2406 transitions. Second operand 7 states. [2020-10-29 07:44:49,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:44:49,568 INFO L93 Difference]: Finished difference Result 3608 states and 4528 transitions. [2020-10-29 07:44:49,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 07:44:49,570 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 350 [2020-10-29 07:44:49,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:44:49,584 INFO L225 Difference]: With dead ends: 3608 [2020-10-29 07:44:49,585 INFO L226 Difference]: Without dead ends: 1977 [2020-10-29 07:44:49,589 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:44:49,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1977 states. [2020-10-29 07:44:49,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1977 to 1951. [2020-10-29 07:44:49,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1951 states. [2020-10-29 07:44:49,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1951 states to 1951 states and 2410 transitions. [2020-10-29 07:44:49,670 INFO L78 Accepts]: Start accepts. Automaton has 1951 states and 2410 transitions. Word has length 350 [2020-10-29 07:44:49,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:44:49,671 INFO L481 AbstractCegarLoop]: Abstraction has 1951 states and 2410 transitions. [2020-10-29 07:44:49,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:44:49,671 INFO L276 IsEmpty]: Start isEmpty. Operand 1951 states and 2410 transitions. [2020-10-29 07:44:49,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2020-10-29 07:44:49,678 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:44:49,679 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:44:49,679 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:44:49,679 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:44:49,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:44:49,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1888046162, now seen corresponding path program 1 times [2020-10-29 07:44:49,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:44:49,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1470233460] [2020-10-29 07:44:49,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:44:49,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:49,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:50,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:50,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:51,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:54,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:54,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 379 [2020-10-29 07:44:54,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:44:54,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-29 07:44:54,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:54,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:54,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 07:44:54,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:44:54,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 370 [2020-10-29 07:44:54,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:54,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:44:55,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:55,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:55,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:55,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:44:55,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:44:55,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 07:44:55,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:55,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:55,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:44:55,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:44:55,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:44:55,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:55,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:44:55,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:55,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:55,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:55,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:55,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 07:44:55,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:44:55,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-29 07:44:55,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:55,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:55,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:44:55,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:44:55,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 07:44:55,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:55,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 07:44:55,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:44:55,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:55,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:44:56,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:44:56,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 07:44:56,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:44:56,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 765 [2020-10-29 07:44:56,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:44:56,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:44:56,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:44:56,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:44:56,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-29 07:44:56,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:44:56,445 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 116 proven. 11 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-29 07:44:56,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1470233460] [2020-10-29 07:44:56,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:44:56,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:44:56,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701579707] [2020-10-29 07:44:56,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:44:56,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:44:56,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:44:56,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:44:56,450 INFO L87 Difference]: Start difference. First operand 1951 states and 2410 transitions. Second operand 7 states. [2020-10-29 07:44:56,625 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-29 07:45:14,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:45:14,752 INFO L93 Difference]: Finished difference Result 4522 states and 6010 transitions. [2020-10-29 07:45:14,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 07:45:14,754 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 365 [2020-10-29 07:45:14,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:45:14,780 INFO L225 Difference]: With dead ends: 4522 [2020-10-29 07:45:14,781 INFO L226 Difference]: Without dead ends: 3824 [2020-10-29 07:45:14,785 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-10-29 07:45:14,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3824 states. [2020-10-29 07:45:14,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3824 to 2897. [2020-10-29 07:45:14,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2897 states. [2020-10-29 07:45:14,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2897 states to 2897 states and 3693 transitions. [2020-10-29 07:45:14,912 INFO L78 Accepts]: Start accepts. Automaton has 2897 states and 3693 transitions. Word has length 365 [2020-10-29 07:45:14,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:45:14,915 INFO L481 AbstractCegarLoop]: Abstraction has 2897 states and 3693 transitions. [2020-10-29 07:45:14,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:45:14,915 INFO L276 IsEmpty]: Start isEmpty. Operand 2897 states and 3693 transitions. [2020-10-29 07:45:14,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2020-10-29 07:45:14,930 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:45:14,931 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:45:14,931 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:45:14,931 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:45:14,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:45:14,932 INFO L82 PathProgramCache]: Analyzing trace with hash 361658616, now seen corresponding path program 1 times [2020-10-29 07:45:14,932 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:45:14,932 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [741207938] [2020-10-29 07:45:14,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:45:15,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:15,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:15,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:17,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:17,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:17,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 468 [2020-10-29 07:45:17,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:45:17,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2745 [2020-10-29 07:45:17,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:17,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:17,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:45:17,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-29 07:45:17,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-29 07:45:17,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:18,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:45:18,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:18,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:18,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:18,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:45:18,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:18,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 07:45:18,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:18,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:18,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:45:18,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:45:18,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:45:18,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:18,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:45:18,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:18,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:18,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:18,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:45:18,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:18,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 492 [2020-10-29 07:45:18,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:18,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:18,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:45:18,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:45:18,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-29 07:45:18,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:45:18,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:45:18,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:18,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:19,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:19,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:19,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:45:19,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:45:19,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 294 [2020-10-29 07:45:19,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:19,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:19,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:45:19,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:45:19,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 07:45:19,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:19,425 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 167 proven. 62 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 07:45:19,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [741207938] [2020-10-29 07:45:19,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:45:19,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:45:19,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830857623] [2020-10-29 07:45:19,427 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:45:19,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:45:19,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:45:19,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:45:19,428 INFO L87 Difference]: Start difference. First operand 2897 states and 3693 transitions. Second operand 7 states. [2020-10-29 07:45:32,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:45:32,194 INFO L93 Difference]: Finished difference Result 7125 states and 9519 transitions. [2020-10-29 07:45:32,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:45:32,196 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 454 [2020-10-29 07:45:32,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:45:32,221 INFO L225 Difference]: With dead ends: 7125 [2020-10-29 07:45:32,221 INFO L226 Difference]: Without dead ends: 4541 [2020-10-29 07:45:32,230 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:45:32,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4541 states. [2020-10-29 07:45:32,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4541 to 4498. [2020-10-29 07:45:32,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4498 states. [2020-10-29 07:45:32,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4498 states to 4498 states and 5530 transitions. [2020-10-29 07:45:32,379 INFO L78 Accepts]: Start accepts. Automaton has 4498 states and 5530 transitions. Word has length 454 [2020-10-29 07:45:32,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:45:32,380 INFO L481 AbstractCegarLoop]: Abstraction has 4498 states and 5530 transitions. [2020-10-29 07:45:32,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:45:32,381 INFO L276 IsEmpty]: Start isEmpty. Operand 4498 states and 5530 transitions. [2020-10-29 07:45:32,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2020-10-29 07:45:32,388 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:45:32,388 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, 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, 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] [2020-10-29 07:45:32,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:45:32,389 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:45:32,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:45:32,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1987319572, now seen corresponding path program 1 times [2020-10-29 07:45:32,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:45:32,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1505265342] [2020-10-29 07:45:32,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:45:32,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:32,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:32,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:33,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:35,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:35,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:36,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:37,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:37,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 491 [2020-10-29 07:45:37,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 07:45:37,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-29 07:45:37,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:37,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:37,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:45:37,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-29 07:45:37,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 315 [2020-10-29 07:45:37,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:37,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:45:37,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:37,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:37,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:37,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:45:37,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:37,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:45:37,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:37,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:37,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:45:37,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:45:37,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:45:37,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:37,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:45:37,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:37,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:37,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:37,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 07:45:37,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:37,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-29 07:45:37,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:37,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:37,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:45:37,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:45:37,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 07:45:37,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:37,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-29 07:45:38,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:38,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:38,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:38,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:38,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-29 07:45:38,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:45:38,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 492 [2020-10-29 07:45:38,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:38,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:38,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:45:38,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:45:38,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-29 07:45:38,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:38,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-29 07:45:38,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:38,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:38,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:45:38,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:45:38,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:45:38,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-29 07:45:38,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:45:38,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:45:38,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:45:38,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:45:38,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 07:45:38,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:45:39,156 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 370 proven. 6 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-29 07:45:39,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1505265342] [2020-10-29 07:45:39,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:45:39,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:45:39,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984570592] [2020-10-29 07:45:39,158 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:45:39,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:45:39,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:45:39,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:45:39,160 INFO L87 Difference]: Start difference. First operand 4498 states and 5530 transitions. Second operand 7 states. [2020-10-29 07:45:55,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:45:55,238 INFO L93 Difference]: Finished difference Result 10008 states and 12946 transitions. [2020-10-29 07:45:55,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:45:55,240 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 475 [2020-10-29 07:45:55,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:45:55,270 INFO L225 Difference]: With dead ends: 10008 [2020-10-29 07:45:55,270 INFO L226 Difference]: Without dead ends: 6130 [2020-10-29 07:45:55,281 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:45:55,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6130 states. [2020-10-29 07:45:55,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6130 to 5807. [2020-10-29 07:45:55,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5807 states. [2020-10-29 07:45:55,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5807 states to 5807 states and 7059 transitions. [2020-10-29 07:45:55,465 INFO L78 Accepts]: Start accepts. Automaton has 5807 states and 7059 transitions. Word has length 475 [2020-10-29 07:45:55,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:45:55,466 INFO L481 AbstractCegarLoop]: Abstraction has 5807 states and 7059 transitions. [2020-10-29 07:45:55,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:45:55,466 INFO L276 IsEmpty]: Start isEmpty. Operand 5807 states and 7059 transitions. [2020-10-29 07:45:55,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 538 [2020-10-29 07:45:55,474 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:45:55,475 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, 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, 2, 2, 2, 2, 2, 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] [2020-10-29 07:45:55,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 07:45:55,476 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:45:55,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:45:55,476 INFO L82 PathProgramCache]: Analyzing trace with hash -1739668279, now seen corresponding path program 1 times [2020-10-29 07:45:55,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:45:55,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1501582683] [2020-10-29 07:45:55,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:45:55,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:45:55,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:55,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:45:56,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:00,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:00,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:00,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 553 [2020-10-29 07:46:00,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:46:00,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 07:46:00,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:00,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:00,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:46:00,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 397 [2020-10-29 07:46:00,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-29 07:46:00,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:00,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:46:00,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:00,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:00,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:00,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:46:00,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:00,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:46:00,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:00,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:00,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:46:00,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:46:00,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:46:00,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:00,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:46:00,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:00,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:00,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:00,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:46:00,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:00,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-29 07:46:00,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:00,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:00,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:46:00,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:46:00,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:46:00,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:01,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:46:01,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:01,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:01,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:01,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:46:01,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:01,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-29 07:46:01,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:01,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:01,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:46:01,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:46:01,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:46:01,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:01,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-29 07:46:01,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:01,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:01,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:01,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-29 07:46:01,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:01,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-29 07:46:01,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:01,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:01,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:46:01,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:46:01,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-29 07:46:01,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:01,677 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 349 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-29 07:46:01,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1501582683] [2020-10-29 07:46:01,677 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:46:01,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:46:01,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617544364] [2020-10-29 07:46:01,678 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:46:01,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:46:01,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:46:01,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:46:01,679 INFO L87 Difference]: Start difference. First operand 5807 states and 7059 transitions. Second operand 8 states. [2020-10-29 07:46:16,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:46:16,962 INFO L93 Difference]: Finished difference Result 11642 states and 14536 transitions. [2020-10-29 07:46:16,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:46:16,964 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 537 [2020-10-29 07:46:16,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:46:17,006 INFO L225 Difference]: With dead ends: 11642 [2020-10-29 07:46:17,007 INFO L226 Difference]: Without dead ends: 6148 [2020-10-29 07:46:17,021 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-29 07:46:17,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6148 states. [2020-10-29 07:46:17,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6148 to 5825. [2020-10-29 07:46:17,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5825 states. [2020-10-29 07:46:17,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5825 states to 5825 states and 6991 transitions. [2020-10-29 07:46:17,195 INFO L78 Accepts]: Start accepts. Automaton has 5825 states and 6991 transitions. Word has length 537 [2020-10-29 07:46:17,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:46:17,197 INFO L481 AbstractCegarLoop]: Abstraction has 5825 states and 6991 transitions. [2020-10-29 07:46:17,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:46:17,197 INFO L276 IsEmpty]: Start isEmpty. Operand 5825 states and 6991 transitions. [2020-10-29 07:46:17,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2020-10-29 07:46:17,206 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:46:17,207 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:46:17,207 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 07:46:17,208 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:46:17,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:46:17,208 INFO L82 PathProgramCache]: Analyzing trace with hash -1508771766, now seen corresponding path program 1 times [2020-10-29 07:46:17,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:46:17,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [936714281] [2020-10-29 07:46:17,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:46:17,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:17,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:17,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:18,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:21,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:22,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:22,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 565 [2020-10-29 07:46:22,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:46:22,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-29 07:46:22,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:22,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:22,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:46:22,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 397 [2020-10-29 07:46:22,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 07:46:22,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:22,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:46:22,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:22,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:22,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:22,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:46:22,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:22,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:46:22,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:22,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:22,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:46:22,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:46:22,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:46:22,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:22,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:46:22,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:22,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:22,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:22,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:46:22,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:22,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-29 07:46:22,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:22,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:22,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:46:22,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:46:22,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:46:22,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:22,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:46:22,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:22,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:22,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:22,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:46:22,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:22,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-29 07:46:22,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:22,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:22,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:46:22,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:46:22,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:46:22,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:22,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-29 07:46:23,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:23,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:23,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:23,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 07:46:23,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:23,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-29 07:46:23,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:23,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:23,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:46:23,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:46:23,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 07:46:23,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:23,292 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 373 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-29 07:46:23,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [936714281] [2020-10-29 07:46:23,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:46:23,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:46:23,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921758113] [2020-10-29 07:46:23,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:46:23,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:46:23,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:46:23,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:46:23,296 INFO L87 Difference]: Start difference. First operand 5825 states and 6991 transitions. Second operand 7 states. [2020-10-29 07:46:41,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:46:41,042 INFO L93 Difference]: Finished difference Result 13612 states and 16763 transitions. [2020-10-29 07:46:41,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:46:41,046 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 549 [2020-10-29 07:46:41,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:46:41,090 INFO L225 Difference]: With dead ends: 13612 [2020-10-29 07:46:41,090 INFO L226 Difference]: Without dead ends: 8102 [2020-10-29 07:46:41,109 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:46:41,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8102 states. [2020-10-29 07:46:41,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8102 to 7424. [2020-10-29 07:46:41,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7424 states. [2020-10-29 07:46:41,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7424 states to 7424 states and 8794 transitions. [2020-10-29 07:46:41,373 INFO L78 Accepts]: Start accepts. Automaton has 7424 states and 8794 transitions. Word has length 549 [2020-10-29 07:46:41,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:46:41,375 INFO L481 AbstractCegarLoop]: Abstraction has 7424 states and 8794 transitions. [2020-10-29 07:46:41,375 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:46:41,376 INFO L276 IsEmpty]: Start isEmpty. Operand 7424 states and 8794 transitions. [2020-10-29 07:46:41,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 611 [2020-10-29 07:46:41,392 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:46:41,393 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, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:46:41,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 07:46:41,393 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:46:41,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:46:41,394 INFO L82 PathProgramCache]: Analyzing trace with hash -536705615, now seen corresponding path program 1 times [2020-10-29 07:46:41,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:46:41,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [290587644] [2020-10-29 07:46:41,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:46:41,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:41,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:42,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:42,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:43,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:46,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:46,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 628 [2020-10-29 07:46:46,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:46:46,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-29 07:46:46,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:46,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:46,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:46:46,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 468 [2020-10-29 07:46:46,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-29 07:46:46,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:46,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:46:46,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:46,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:46,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:46,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:46:46,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:46,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:46:46,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:46,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:46,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:46:46,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:46:46,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:46:46,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:46,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:46:46,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:46,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:47,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:47,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:46:47,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:47,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-29 07:46:47,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:47,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:47,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:46:47,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:46:47,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:46:47,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:47,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:46:47,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:47,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:47,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:47,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:46:47,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:47,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 07:46:47,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:47,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:47,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:46:47,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:46:47,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:46:47,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:47,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-29 07:46:47,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:47,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:47,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:47,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 07:46:47,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:47,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-29 07:46:47,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:47,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:47,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:46:47,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:46:47,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 07:46:47,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:47,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2020-10-29 07:46:47,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:46:47,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:46:47,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:46:47,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 07:46:47,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:46:47,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-29 07:46:47,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:46:47,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:46:47,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:46:47,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:46:47,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 07:46:47,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:46:47,719 INFO L134 CoverageAnalysis]: Checked inductivity of 738 backedges. 490 proven. 2 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2020-10-29 07:46:47,719 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [290587644] [2020-10-29 07:46:47,719 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:46:47,719 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:46:47,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870513775] [2020-10-29 07:46:47,720 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:46:47,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:46:47,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:46:47,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:46:47,722 INFO L87 Difference]: Start difference. First operand 7424 states and 8794 transitions. Second operand 7 states. [2020-10-29 07:46:50,673 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-29 07:47:00,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:47:00,612 INFO L93 Difference]: Finished difference Result 15491 states and 18992 transitions. [2020-10-29 07:47:00,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:47:00,614 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 610 [2020-10-29 07:47:00,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:47:00,647 INFO L225 Difference]: With dead ends: 15491 [2020-10-29 07:47:00,647 INFO L226 Difference]: Without dead ends: 9578 [2020-10-29 07:47:00,666 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:47:00,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9578 states. [2020-10-29 07:47:00,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9578 to 8004. [2020-10-29 07:47:00,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8004 states. [2020-10-29 07:47:00,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8004 states to 8004 states and 8888 transitions. [2020-10-29 07:47:00,891 INFO L78 Accepts]: Start accepts. Automaton has 8004 states and 8888 transitions. Word has length 610 [2020-10-29 07:47:00,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:47:00,892 INFO L481 AbstractCegarLoop]: Abstraction has 8004 states and 8888 transitions. [2020-10-29 07:47:00,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:47:00,892 INFO L276 IsEmpty]: Start isEmpty. Operand 8004 states and 8888 transitions. [2020-10-29 07:47:00,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 610 [2020-10-29 07:47:00,905 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:47:00,908 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:47:00,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 07:47:00,908 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:47:00,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:47:00,909 INFO L82 PathProgramCache]: Analyzing trace with hash -2010633592, now seen corresponding path program 1 times [2020-10-29 07:47:00,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:47:00,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [101829354] [2020-10-29 07:47:00,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:47:01,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:01,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:01,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:01,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:06,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:06,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 625 [2020-10-29 07:47:06,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:47:06,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-29 07:47:06,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:06,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:06,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:47:06,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 397 [2020-10-29 07:47:06,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-29 07:47:06,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:06,389 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-29 07:47:06,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:47:06,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:06,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:06,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:06,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:47:06,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:47:06,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-29 07:47:06,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:06,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:06,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:47:06,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:47:06,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:47:06,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:06,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:47:06,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:06,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:06,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:06,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:47:06,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:47:06,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-29 07:47:06,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:06,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:06,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:47:06,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:47:06,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:47:06,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:06,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-29 07:47:06,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:06,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:06,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:06,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 07:47:06,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:47:06,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-29 07:47:06,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:06,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:06,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:47:06,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:47:06,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:47:06,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:06,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-29 07:47:06,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:06,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:07,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:47:07,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-29 07:47:07,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:47:07,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-10-29 07:47:07,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:47:07,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:47:07,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:47:07,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:47:07,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 155 [2020-10-29 07:47:07,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:47:07,416 INFO L134 CoverageAnalysis]: Checked inductivity of 562 backedges. 450 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-29 07:47:07,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [101829354] [2020-10-29 07:47:07,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:47:07,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:47:07,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676478549] [2020-10-29 07:47:07,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:47:07,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:47:07,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:47:07,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:47:07,419 INFO L87 Difference]: Start difference. First operand 8004 states and 8888 transitions. Second operand 7 states. [2020-10-29 07:47:21,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:47:21,823 INFO L93 Difference]: Finished difference Result 16343 states and 18637 transitions. [2020-10-29 07:47:21,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:47:21,826 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 609 [2020-10-29 07:47:21,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:47:21,874 INFO L225 Difference]: With dead ends: 16343 [2020-10-29 07:47:21,875 INFO L226 Difference]: Without dead ends: 10829 [2020-10-29 07:47:21,890 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:47:21,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10829 states. [2020-10-29 07:47:22,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10829 to 9250. [2020-10-29 07:47:22,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9250 states. [2020-10-29 07:47:22,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9250 states to 9250 states and 10408 transitions. [2020-10-29 07:47:22,143 INFO L78 Accepts]: Start accepts. Automaton has 9250 states and 10408 transitions. Word has length 609 [2020-10-29 07:47:22,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:47:22,144 INFO L481 AbstractCegarLoop]: Abstraction has 9250 states and 10408 transitions. [2020-10-29 07:47:22,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:47:22,145 INFO L276 IsEmpty]: Start isEmpty. Operand 9250 states and 10408 transitions. [2020-10-29 07:47:22,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 648 [2020-10-29 07:47:22,163 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:47:22,164 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:47:22,164 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 07:47:22,164 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:47:22,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:47:22,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1372631562, now seen corresponding path program 1 times [2020-10-29 07:47:22,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:47:22,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [316052760] [2020-10-29 07:47:22,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:47:22,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:47:22,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:22,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:47:24,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking...