/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=DEEPEST --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/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 23:56:10,200 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 23:56:10,203 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 23:56:10,249 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 23:56:10,250 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 23:56:10,256 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 23:56:10,258 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 23:56:10,263 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 23:56:10,266 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 23:56:10,271 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 23:56:10,272 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 23:56:10,274 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 23:56:10,274 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 23:56:10,277 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 23:56:10,280 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 23:56:10,283 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 23:56:10,284 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 23:56:10,287 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 23:56:10,301 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 23:56:10,303 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 23:56:10,307 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 23:56:10,311 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 23:56:10,312 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 23:56:10,313 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 23:56:10,317 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 23:56:10,318 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 23:56:10,318 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 23:56:10,319 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 23:56:10,319 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 23:56:10,320 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 23:56:10,321 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 23:56:10,321 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 23:56:10,322 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 23:56:10,323 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 23:56:10,324 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 23:56:10,324 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 23:56:10,325 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 23:56:10,325 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 23:56:10,325 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 23:56:10,326 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 23:56:10,327 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 23:56:10,328 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 23:56:10,353 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 23:56:10,354 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 23:56:10,355 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 23:56:10,355 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 23:56:10,355 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 23:56:10,356 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 23:56:10,356 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 23:56:10,356 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 23:56:10,356 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 23:56:10,356 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 23:56:10,357 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 23:56:10,357 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 23:56:10,357 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 23:56:10,357 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 23:56:10,357 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 23:56:10,357 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 23:56:10,358 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 23:56:10,358 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 23:56:10,358 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 23:56:10,358 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 23:56:10,358 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 23:56:10,359 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 23:56:10,359 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 23:56:10,359 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 23:56:10,359 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 23:56:10,360 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 23:56:10,360 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 23:56:10,360 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 23:56:10,360 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 23:56:10,360 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 23:56:10,727 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 23:56:10,757 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 23:56:10,760 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 23:56:10,761 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 23:56:10,762 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 23:56:10,763 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c [2020-10-27 23:56:10,839 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/34b07cc38/7a5cee69aa7b46409cb1d531c76ce2ae/FLAG7e4e15eee [2020-10-27 23:56:11,455 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 23:56:11,456 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c [2020-10-27 23:56:11,476 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/34b07cc38/7a5cee69aa7b46409cb1d531c76ce2ae/FLAG7e4e15eee [2020-10-27 23:56:11,754 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/34b07cc38/7a5cee69aa7b46409cb1d531c76ce2ae [2020-10-27 23:56:11,758 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 23:56:11,767 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 23:56:11,773 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 23:56:11,773 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 23:56:11,777 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 23:56:11,779 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:56:11" (1/1) ... [2020-10-27 23:56:11,783 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5931a6b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:56:11, skipping insertion in model container [2020-10-27 23:56:11,783 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:56:11" (1/1) ... [2020-10-27 23:56:11,792 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 23:56:11,878 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 23:56:12,318 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:56:12,333 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 23:56:12,575 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:56:12,609 INFO L208 MainTranslator]: Completed translation [2020-10-27 23:56:12,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:56:12 WrapperNode [2020-10-27 23:56:12,609 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 23:56:12,610 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 23:56:12,611 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 23:56:12,611 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 23:56:12,624 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:56:12" (1/1) ... [2020-10-27 23:56:12,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:56:12" (1/1) ... [2020-10-27 23:56:12,662 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:56:12" (1/1) ... [2020-10-27 23:56:12,667 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:56:12" (1/1) ... [2020-10-27 23:56:12,735 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:56:12" (1/1) ... [2020-10-27 23:56:12,751 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:56:12" (1/1) ... [2020-10-27 23:56:12,756 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:56:12" (1/1) ... [2020-10-27 23:56:12,762 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 23:56:12,763 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 23:56:12,763 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 23:56:12,764 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 23:56:12,764 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:56:12" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 23:56:12,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 23:56:12,844 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 23:56:12,844 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 23:56:12,845 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 23:56:12,845 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 23:56:12,845 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 23:56:12,846 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 23:56:12,846 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 23:56:12,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 23:56:12,846 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 23:56:12,847 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 23:56:12,847 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-27 23:56:12,847 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 23:56:12,847 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 23:56:12,848 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 23:56:12,848 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 23:56:12,849 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 23:56:12,849 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 23:56:12,849 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 23:56:12,849 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 23:56:12,850 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-27 23:56:12,850 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-27 23:56:12,850 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 23:56:12,851 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 23:56:12,855 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 23:56:12,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 23:56:12,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 23:56:12,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 23:56:12,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 23:56:12,857 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 23:56:12,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 23:56:14,233 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 23:56:14,234 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 23:56:14,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:56:14 BoogieIcfgContainer [2020-10-27 23:56:14,236 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 23:56:14,238 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 23:56:14,238 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 23:56:14,241 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 23:56:14,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 11:56:11" (1/3) ... [2020-10-27 23:56:14,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54275c84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:56:14, skipping insertion in model container [2020-10-27 23:56:14,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:56:12" (2/3) ... [2020-10-27 23:56:14,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54275c84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:56:14, skipping insertion in model container [2020-10-27 23:56:14,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:56:14" (3/3) ... [2020-10-27 23:56:14,245 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c [2020-10-27 23:56:14,256 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 23:56:14,262 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 23:56:14,274 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 23:56:14,302 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 23:56:14,303 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 23:56:14,303 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 23:56:14,303 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 23:56:14,303 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 23:56:14,303 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 23:56:14,303 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 23:56:14,303 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 23:56:14,327 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states. [2020-10-27 23:56:14,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-27 23:56:14,344 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:56:14,345 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:56:14,345 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:56:14,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:56:14,352 INFO L82 PathProgramCache]: Analyzing trace with hash -470747328, now seen corresponding path program 1 times [2020-10-27 23:56:14,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:56:14,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [684416861] [2020-10-27 23:56:14,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:56:14,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:56:14,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:15,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:15,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:15,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:15,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:15,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:15,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:16,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:16,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:16,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:19,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:56:19,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-27 23:56:19,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 23:56:19,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-27 23:56:19,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:56:19,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:56:19,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-27 23:56:19,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 23:56:19,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 23:56:20,201 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:56:20,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:56:20,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:56:20,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:20,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:56:20,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:56:20,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:56:20,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 23:56:20,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:56:20,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:56:20,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:56:20,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:56:20,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:56:20,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:56:20,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [684416861] [2020-10-27 23:56:20,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:56:20,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:56:20,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921000629] [2020-10-27 23:56:20,302 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:56:20,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:56:20,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:56:20,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:56:20,319 INFO L87 Difference]: Start difference. First operand 335 states. Second operand 5 states. [2020-10-27 23:56:21,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:56:21,797 INFO L93 Difference]: Finished difference Result 485 states and 784 transitions. [2020-10-27 23:56:21,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:56:21,799 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 124 [2020-10-27 23:56:21,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:56:21,813 INFO L225 Difference]: With dead ends: 485 [2020-10-27 23:56:21,813 INFO L226 Difference]: Without dead ends: 328 [2020-10-27 23:56:21,817 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:56:21,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2020-10-27 23:56:21,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 328. [2020-10-27 23:56:21,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 328 states. [2020-10-27 23:56:21,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 533 transitions. [2020-10-27 23:56:21,893 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 533 transitions. Word has length 124 [2020-10-27 23:56:21,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:56:21,894 INFO L481 AbstractCegarLoop]: Abstraction has 328 states and 533 transitions. [2020-10-27 23:56:21,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:56:21,894 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 533 transitions. [2020-10-27 23:56:21,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-27 23:56:21,903 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:56:21,903 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:56:21,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 23:56:21,904 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:56:21,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:56:21,905 INFO L82 PathProgramCache]: Analyzing trace with hash 1587886483, now seen corresponding path program 1 times [2020-10-27 23:56:21,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:56:21,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1850619505] [2020-10-27 23:56:21,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:56:21,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:56:21,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:22,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:22,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:22,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:22,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:22,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:22,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:22,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:22,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:22,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:23,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:24,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:26,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:56:26,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-27 23:56:26,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 23:56:26,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 23:56:26,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:56:26,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:56:26,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-27 23:56:26,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 23:56:26,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:56:27,238 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:56:27,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:56:27,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:56:27,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:27,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:56:27,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:56:27,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:56:27,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 23:56:27,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:56:27,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:56:27,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:56:27,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:56:27,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:56:27,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:56:27,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1850619505] [2020-10-27 23:56:27,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:56:27,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:56:27,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093380889] [2020-10-27 23:56:27,295 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:56:27,296 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:56:27,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:56:27,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:56:27,297 INFO L87 Difference]: Start difference. First operand 328 states and 533 transitions. Second operand 4 states. [2020-10-27 23:56:29,776 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-27 23:56:29,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:56:29,783 INFO L93 Difference]: Finished difference Result 737 states and 1176 transitions. [2020-10-27 23:56:29,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:56:29,784 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 126 [2020-10-27 23:56:29,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:56:29,790 INFO L225 Difference]: With dead ends: 737 [2020-10-27 23:56:29,790 INFO L226 Difference]: Without dead ends: 524 [2020-10-27 23:56:29,792 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:56:29,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2020-10-27 23:56:29,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 515. [2020-10-27 23:56:29,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 515 states. [2020-10-27 23:56:29,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 822 transitions. [2020-10-27 23:56:29,834 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 822 transitions. Word has length 126 [2020-10-27 23:56:29,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:56:29,835 INFO L481 AbstractCegarLoop]: Abstraction has 515 states and 822 transitions. [2020-10-27 23:56:29,835 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:56:29,835 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 822 transitions. [2020-10-27 23:56:29,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-27 23:56:29,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:56:29,838 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:56:29,838 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 23:56:29,838 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:56:29,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:56:29,839 INFO L82 PathProgramCache]: Analyzing trace with hash -1910753314, now seen corresponding path program 1 times [2020-10-27 23:56:29,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:56:29,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [33483646] [2020-10-27 23:56:29,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:56:29,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:56:29,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:29,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:29,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:30,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:30,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:30,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:30,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:30,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:30,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:30,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:31,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:34,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:34,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:56:34,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-27 23:56:34,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 23:56:34,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-27 23:56:34,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:56:34,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:56:34,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-27 23:56:34,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 23:56:34,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:56:35,269 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:56:35,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:56:35,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:56:35,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:35,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:56:35,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:56:35,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:56:35,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 23:56:35,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:56:35,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:56:35,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:56:35,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:56:35,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:56:35,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:56:35,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [33483646] [2020-10-27 23:56:35,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:56:35,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:56:35,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223069516] [2020-10-27 23:56:35,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:56:35,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:56:35,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:56:35,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:56:35,374 INFO L87 Difference]: Start difference. First operand 515 states and 822 transitions. Second operand 4 states. [2020-10-27 23:56:35,676 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-27 23:56:37,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:56:37,394 INFO L93 Difference]: Finished difference Result 1304 states and 2056 transitions. [2020-10-27 23:56:37,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:56:37,394 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2020-10-27 23:56:37,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:56:37,404 INFO L225 Difference]: With dead ends: 1304 [2020-10-27 23:56:37,404 INFO L226 Difference]: Without dead ends: 937 [2020-10-27 23:56:37,413 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:56:37,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 937 states. [2020-10-27 23:56:37,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 937 to 910. [2020-10-27 23:56:37,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 910 states. [2020-10-27 23:56:37,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 910 states to 910 states and 1436 transitions. [2020-10-27 23:56:37,470 INFO L78 Accepts]: Start accepts. Automaton has 910 states and 1436 transitions. Word has length 127 [2020-10-27 23:56:37,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:56:37,471 INFO L481 AbstractCegarLoop]: Abstraction has 910 states and 1436 transitions. [2020-10-27 23:56:37,471 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:56:37,471 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states and 1436 transitions. [2020-10-27 23:56:37,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-27 23:56:37,475 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:56:37,475 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:56:37,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 23:56:37,476 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:56:37,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:56:37,476 INFO L82 PathProgramCache]: Analyzing trace with hash -824270091, now seen corresponding path program 1 times [2020-10-27 23:56:37,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:56:37,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1211265355] [2020-10-27 23:56:37,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:56:37,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:56:37,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:37,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:37,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:37,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:37,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:37,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:37,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:37,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:38,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:38,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:40,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:40,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:42,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:56:42,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-27 23:56:42,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 23:56:42,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-27 23:56:42,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:56:42,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:56:42,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-27 23:56:42,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 23:56:42,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 23:56:42,865 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:56:42,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:56:42,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:56:42,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:42,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:56:42,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:56:42,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:56:42,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:56:42,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:56:42,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:56:42,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:56:42,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:56:42,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:56:42,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:56:42,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1211265355] [2020-10-27 23:56:42,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:56:42,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:56:42,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969815012] [2020-10-27 23:56:42,934 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:56:42,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:56:42,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:56:42,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:56:42,936 INFO L87 Difference]: Start difference. First operand 910 states and 1436 transitions. Second operand 4 states. [2020-10-27 23:56:43,186 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-27 23:56:44,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:56:44,779 INFO L93 Difference]: Finished difference Result 2282 states and 3568 transitions. [2020-10-27 23:56:44,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:56:44,780 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2020-10-27 23:56:44,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:56:44,795 INFO L225 Difference]: With dead ends: 2282 [2020-10-27 23:56:44,795 INFO L226 Difference]: Without dead ends: 1663 [2020-10-27 23:56:44,797 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:56:44,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1663 states. [2020-10-27 23:56:44,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1663 to 1612. [2020-10-27 23:56:44,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1612 states. [2020-10-27 23:56:44,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1612 states to 1612 states and 2516 transitions. [2020-10-27 23:56:44,897 INFO L78 Accepts]: Start accepts. Automaton has 1612 states and 2516 transitions. Word has length 129 [2020-10-27 23:56:44,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:56:44,900 INFO L481 AbstractCegarLoop]: Abstraction has 1612 states and 2516 transitions. [2020-10-27 23:56:44,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:56:44,900 INFO L276 IsEmpty]: Start isEmpty. Operand 1612 states and 2516 transitions. [2020-10-27 23:56:44,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-27 23:56:44,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:56:44,909 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:56:44,910 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 23:56:44,910 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:56:44,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:56:44,910 INFO L82 PathProgramCache]: Analyzing trace with hash -887275951, now seen corresponding path program 1 times [2020-10-27 23:56:44,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:56:44,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [546536663] [2020-10-27 23:56:44,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:56:44,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:56:44,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:45,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:45,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:45,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:45,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:45,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:45,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:45,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:45,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:46,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:46,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:49,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:56:49,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-27 23:56:49,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 23:56:49,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-27 23:56:49,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:56:49,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:56:49,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-27 23:56:49,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 23:56:49,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:56:50,260 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:56:50,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:56:50,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:56:50,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:50,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:56:50,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:56:50,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:56:50,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:56:50,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:56:50,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:56:50,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:56:50,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:56:50,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:56:50,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:56:50,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [546536663] [2020-10-27 23:56:50,324 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:56:50,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:56:50,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853466117] [2020-10-27 23:56:50,325 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:56:50,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:56:50,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:56:50,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:56:50,335 INFO L87 Difference]: Start difference. First operand 1612 states and 2516 transitions. Second operand 4 states. [2020-10-27 23:56:50,608 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-27 23:56:52,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:56:52,556 INFO L93 Difference]: Finished difference Result 4258 states and 6600 transitions. [2020-10-27 23:56:52,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:56:52,557 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 131 [2020-10-27 23:56:52,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:56:52,578 INFO L225 Difference]: With dead ends: 4258 [2020-10-27 23:56:52,578 INFO L226 Difference]: Without dead ends: 3039 [2020-10-27 23:56:52,582 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:56:52,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3039 states. [2020-10-27 23:56:52,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3039 to 2940. [2020-10-27 23:56:52,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2940 states. [2020-10-27 23:56:52,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2940 states to 2940 states and 4540 transitions. [2020-10-27 23:56:52,747 INFO L78 Accepts]: Start accepts. Automaton has 2940 states and 4540 transitions. Word has length 131 [2020-10-27 23:56:52,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:56:52,748 INFO L481 AbstractCegarLoop]: Abstraction has 2940 states and 4540 transitions. [2020-10-27 23:56:52,748 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:56:52,748 INFO L276 IsEmpty]: Start isEmpty. Operand 2940 states and 4540 transitions. [2020-10-27 23:56:52,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-27 23:56:52,756 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:56:52,756 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:56:52,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 23:56:52,757 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:56:52,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:56:52,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1049434791, now seen corresponding path program 1 times [2020-10-27 23:56:52,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:56:52,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [703554815] [2020-10-27 23:56:52,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:56:52,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:56:52,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:52,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:52,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:52,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:52,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:53,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:53,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:53,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:54,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:54,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:54,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:57,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:56:57,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-27 23:56:57,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 23:56:57,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 23:56:57,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:56:57,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:56:57,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-27 23:56:57,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 23:56:57,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:56:58,073 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:56:58,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:56:58,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:56:58,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:56:58,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:56:58,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:56:58,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:56:58,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 23:56:58,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:56:58,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:56:58,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:56:58,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:56:58,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:56:58,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:56:58,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [703554815] [2020-10-27 23:56:58,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:56:58,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:56:58,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515544173] [2020-10-27 23:56:58,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:56:58,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:56:58,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:56:58,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:56:58,137 INFO L87 Difference]: Start difference. First operand 2940 states and 4540 transitions. Second operand 4 states. [2020-10-27 23:56:58,381 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-27 23:56:59,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:56:59,957 INFO L93 Difference]: Finished difference Result 7290 states and 11168 transitions. [2020-10-27 23:56:59,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:56:59,957 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 133 [2020-10-27 23:56:59,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:56:59,985 INFO L225 Difference]: With dead ends: 7290 [2020-10-27 23:56:59,985 INFO L226 Difference]: Without dead ends: 5399 [2020-10-27 23:56:59,992 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:56:59,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5399 states. [2020-10-27 23:57:00,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5399 to 5204. [2020-10-27 23:57:00,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5204 states. [2020-10-27 23:57:00,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5204 states to 5204 states and 7932 transitions. [2020-10-27 23:57:00,334 INFO L78 Accepts]: Start accepts. Automaton has 5204 states and 7932 transitions. Word has length 133 [2020-10-27 23:57:00,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:57:00,335 INFO L481 AbstractCegarLoop]: Abstraction has 5204 states and 7932 transitions. [2020-10-27 23:57:00,335 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:57:00,335 INFO L276 IsEmpty]: Start isEmpty. Operand 5204 states and 7932 transitions. [2020-10-27 23:57:00,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-27 23:57:00,349 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:57:00,350 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:57:00,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 23:57:00,350 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:57:00,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:57:00,351 INFO L82 PathProgramCache]: Analyzing trace with hash -563506315, now seen corresponding path program 1 times [2020-10-27 23:57:00,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:57:00,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1973774362] [2020-10-27 23:57:00,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:57:00,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:57:00,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:00,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:00,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:00,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:00,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:00,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:00,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:00,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:01,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:03,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:03,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:05,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:57:05,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-27 23:57:05,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 23:57:05,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 23:57:05,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:57:05,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:57:05,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-27 23:57:05,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 23:57:05,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:57:05,665 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:57:05,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:57:05,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:57:05,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:05,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:57:05,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:57:05,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:57:05,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 23:57:05,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:57:05,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:57:05,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:57:05,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:57:05,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:57:05,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:57:05,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1973774362] [2020-10-27 23:57:05,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:57:05,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:57:05,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998661671] [2020-10-27 23:57:05,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:57:05,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:57:05,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:57:05,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:57:05,724 INFO L87 Difference]: Start difference. First operand 5204 states and 7932 transitions. Second operand 4 states. [2020-10-27 23:57:05,990 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-27 23:57:08,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:57:08,065 INFO L93 Difference]: Finished difference Result 13530 states and 20480 transitions. [2020-10-27 23:57:08,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:57:08,066 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 135 [2020-10-27 23:57:08,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:57:08,108 INFO L225 Difference]: With dead ends: 13530 [2020-10-27 23:57:08,108 INFO L226 Difference]: Without dead ends: 9815 [2020-10-27 23:57:08,117 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:57:08,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9815 states. [2020-10-27 23:57:08,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9815 to 9428. [2020-10-27 23:57:08,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9428 states. [2020-10-27 23:57:08,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9428 states to 9428 states and 14172 transitions. [2020-10-27 23:57:08,651 INFO L78 Accepts]: Start accepts. Automaton has 9428 states and 14172 transitions. Word has length 135 [2020-10-27 23:57:08,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:57:08,651 INFO L481 AbstractCegarLoop]: Abstraction has 9428 states and 14172 transitions. [2020-10-27 23:57:08,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:57:08,651 INFO L276 IsEmpty]: Start isEmpty. Operand 9428 states and 14172 transitions. [2020-10-27 23:57:08,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-27 23:57:08,676 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:57:08,676 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:57:08,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 23:57:08,676 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:57:08,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:57:08,677 INFO L82 PathProgramCache]: Analyzing trace with hash -1732790099, now seen corresponding path program 1 times [2020-10-27 23:57:08,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:57:08,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [113028178] [2020-10-27 23:57:08,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:57:08,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:57:08,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:08,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:08,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:08,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:08,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:08,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:08,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:09,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:09,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:13,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:57:13,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-27 23:57:13,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 23:57:13,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 23:57:13,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:57:13,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:57:13,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-27 23:57:13,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 23:57:13,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:57:13,972 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:57:13,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:57:13,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:57:13,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:13,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:57:13,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:57:13,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:57:13,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 23:57:13,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:57:13,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:57:13,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:57:13,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:57:13,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:57:14,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:57:14,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [113028178] [2020-10-27 23:57:14,064 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:57:14,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:57:14,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846253063] [2020-10-27 23:57:14,065 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:57:14,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:57:14,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:57:14,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:57:14,066 INFO L87 Difference]: Start difference. First operand 9428 states and 14172 transitions. Second operand 4 states. [2020-10-27 23:57:16,412 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-27 23:57:16,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:57:16,429 INFO L93 Difference]: Finished difference Result 16058 states and 24128 transitions. [2020-10-27 23:57:16,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:57:16,430 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 137 [2020-10-27 23:57:16,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:57:16,467 INFO L225 Difference]: With dead ends: 16058 [2020-10-27 23:57:16,467 INFO L226 Difference]: Without dead ends: 9431 [2020-10-27 23:57:16,482 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:57:16,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9431 states. [2020-10-27 23:57:16,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9431 to 9428. [2020-10-27 23:57:16,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9428 states. [2020-10-27 23:57:16,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9428 states to 9428 states and 14076 transitions. [2020-10-27 23:57:16,979 INFO L78 Accepts]: Start accepts. Automaton has 9428 states and 14076 transitions. Word has length 137 [2020-10-27 23:57:16,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:57:16,979 INFO L481 AbstractCegarLoop]: Abstraction has 9428 states and 14076 transitions. [2020-10-27 23:57:16,979 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:57:16,979 INFO L276 IsEmpty]: Start isEmpty. Operand 9428 states and 14076 transitions. [2020-10-27 23:57:17,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-27 23:57:17,004 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:57:17,004 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:57:17,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 23:57:17,005 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:57:17,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:57:17,005 INFO L82 PathProgramCache]: Analyzing trace with hash 1305211004, now seen corresponding path program 1 times [2020-10-27 23:57:17,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:57:17,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1211158182] [2020-10-27 23:57:17,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:57:17,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:57:17,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:17,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:17,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:17,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:17,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:17,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:17,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:19,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:21,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:21,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:21,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:21,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:22,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:57:22,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-27 23:57:22,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 23:57:22,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 23:57:22,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:57:22,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:57:22,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-10-27 23:57:22,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 23:57:22,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:57:22,337 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:57:22,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:57:22,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:57:22,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:22,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:57:22,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:57:22,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:57:22,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 23:57:22,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:57:22,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:57:22,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:57:22,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:57:22,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:57:22,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:57:22,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1211158182] [2020-10-27 23:57:22,382 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:57:22,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:57:22,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072840352] [2020-10-27 23:57:22,383 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:57:22,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:57:22,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:57:22,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:57:22,384 INFO L87 Difference]: Start difference. First operand 9428 states and 14076 transitions. Second operand 5 states. [2020-10-27 23:57:24,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:57:24,150 INFO L93 Difference]: Finished difference Result 12503 states and 18654 transitions. [2020-10-27 23:57:24,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:57:24,150 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2020-10-27 23:57:24,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:57:24,176 INFO L225 Difference]: With dead ends: 12503 [2020-10-27 23:57:24,176 INFO L226 Difference]: Without dead ends: 9428 [2020-10-27 23:57:24,185 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:57:24,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9428 states. [2020-10-27 23:57:24,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9428 to 9428. [2020-10-27 23:57:24,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9428 states. [2020-10-27 23:57:24,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9428 states to 9428 states and 13948 transitions. [2020-10-27 23:57:24,667 INFO L78 Accepts]: Start accepts. Automaton has 9428 states and 13948 transitions. Word has length 137 [2020-10-27 23:57:24,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:57:24,667 INFO L481 AbstractCegarLoop]: Abstraction has 9428 states and 13948 transitions. [2020-10-27 23:57:24,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:57:24,668 INFO L276 IsEmpty]: Start isEmpty. Operand 9428 states and 13948 transitions. [2020-10-27 23:57:24,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-27 23:57:24,685 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:57:24,686 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:57:24,686 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 23:57:24,686 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:57:24,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:57:24,687 INFO L82 PathProgramCache]: Analyzing trace with hash 2095221702, now seen corresponding path program 1 times [2020-10-27 23:57:24,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:57:24,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2059382428] [2020-10-27 23:57:24,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:57:24,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:57:24,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:24,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:24,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:24,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:24,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:25,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:25,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:25,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:26,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:26,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:26,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:29,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:57:29,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-27 23:57:29,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 23:57:29,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 23:57:29,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:57:29,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:57:29,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-27 23:57:29,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 23:57:29,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:57:29,987 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:57:29,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:57:29,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:57:29,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:30,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:57:30,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:57:30,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:57:30,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:57:30,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:57:30,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:57:30,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:57:30,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:57:30,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:57:30,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:57:30,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2059382428] [2020-10-27 23:57:30,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:57:30,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:57:30,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788241933] [2020-10-27 23:57:30,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:57:30,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:57:30,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:57:30,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:57:30,031 INFO L87 Difference]: Start difference. First operand 9428 states and 13948 transitions. Second operand 4 states. [2020-10-27 23:57:32,582 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-27 23:57:32,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:57:32,599 INFO L93 Difference]: Finished difference Result 23312 states and 34432 transitions. [2020-10-27 23:57:32,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:57:32,599 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 140 [2020-10-27 23:57:32,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:57:32,631 INFO L225 Difference]: With dead ends: 23312 [2020-10-27 23:57:32,631 INFO L226 Difference]: Without dead ends: 14861 [2020-10-27 23:57:32,646 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:57:32,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14861 states. [2020-10-27 23:57:33,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14861 to 13898. [2020-10-27 23:57:33,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13898 states. [2020-10-27 23:57:33,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13898 states to 13898 states and 20476 transitions. [2020-10-27 23:57:33,360 INFO L78 Accepts]: Start accepts. Automaton has 13898 states and 20476 transitions. Word has length 140 [2020-10-27 23:57:33,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:57:33,361 INFO L481 AbstractCegarLoop]: Abstraction has 13898 states and 20476 transitions. [2020-10-27 23:57:33,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:57:33,361 INFO L276 IsEmpty]: Start isEmpty. Operand 13898 states and 20476 transitions. [2020-10-27 23:57:33,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-27 23:57:33,380 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:57:33,380 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:57:33,380 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 23:57:33,380 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:57:33,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:57:33,381 INFO L82 PathProgramCache]: Analyzing trace with hash 752000941, now seen corresponding path program 1 times [2020-10-27 23:57:33,381 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:57:33,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [101629646] [2020-10-27 23:57:33,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:57:33,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:57:33,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:33,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:33,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:33,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:33,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:33,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:34,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:34,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:34,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:34,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:34,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:35,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:38,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:57:38,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-27 23:57:38,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 23:57:38,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 23:57:38,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:57:38,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:57:38,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-27 23:57:38,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 23:57:38,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:57:38,657 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:57:38,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:57:38,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:57:38,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:38,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:57:38,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:57:38,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:57:38,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 23:57:38,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:57:38,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:57:38,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:57:38,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:57:38,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:57:38,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:57:38,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [101629646] [2020-10-27 23:57:38,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:57:38,696 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:57:38,696 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714634238] [2020-10-27 23:57:38,697 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:57:38,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:57:38,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:57:38,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:57:38,698 INFO L87 Difference]: Start difference. First operand 13898 states and 20476 transitions. Second operand 4 states. [2020-10-27 23:57:38,954 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-27 23:57:41,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:57:41,812 INFO L93 Difference]: Finished difference Result 30858 states and 45285 transitions. [2020-10-27 23:57:41,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:57:41,813 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 142 [2020-10-27 23:57:41,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:57:41,854 INFO L225 Difference]: With dead ends: 30858 [2020-10-27 23:57:41,854 INFO L226 Difference]: Without dead ends: 17484 [2020-10-27 23:57:41,880 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:57:41,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17484 states. [2020-10-27 23:57:42,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17484 to 17384. [2020-10-27 23:57:42,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17384 states. [2020-10-27 23:57:42,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17384 states to 17384 states and 25111 transitions. [2020-10-27 23:57:42,868 INFO L78 Accepts]: Start accepts. Automaton has 17384 states and 25111 transitions. Word has length 142 [2020-10-27 23:57:42,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:57:42,868 INFO L481 AbstractCegarLoop]: Abstraction has 17384 states and 25111 transitions. [2020-10-27 23:57:42,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:57:42,869 INFO L276 IsEmpty]: Start isEmpty. Operand 17384 states and 25111 transitions. [2020-10-27 23:57:42,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-27 23:57:42,888 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:57:42,888 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:57:42,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 23:57:42,889 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:57:42,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:57:42,889 INFO L82 PathProgramCache]: Analyzing trace with hash -1745288028, now seen corresponding path program 1 times [2020-10-27 23:57:42,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:57:42,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1623383308] [2020-10-27 23:57:42,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:57:42,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:57:42,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:42,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:42,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:43,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:43,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:43,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:43,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:44,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:47,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:57:47,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-27 23:57:47,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 23:57:47,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 23:57:47,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:57:47,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:57:47,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-27 23:57:47,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-27 23:57:47,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:57:48,170 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:57:48,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:57:48,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:57:48,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:48,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:57:48,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:57:48,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:57:48,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:57:48,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:57:48,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:57:48,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:57:48,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:57:48,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:57:48,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:57:48,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1623383308] [2020-10-27 23:57:48,217 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:57:48,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:57:48,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867092239] [2020-10-27 23:57:48,217 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:57:48,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:57:48,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:57:48,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:57:48,218 INFO L87 Difference]: Start difference. First operand 17384 states and 25111 transitions. Second operand 4 states. [2020-10-27 23:57:50,417 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 23:57:50,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:57:50,798 INFO L93 Difference]: Finished difference Result 32286 states and 46468 transitions. [2020-10-27 23:57:50,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:57:50,799 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 142 [2020-10-27 23:57:50,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:57:50,830 INFO L225 Difference]: With dead ends: 32286 [2020-10-27 23:57:50,831 INFO L226 Difference]: Without dead ends: 21124 [2020-10-27 23:57:50,852 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:57:50,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21124 states. [2020-10-27 23:57:51,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21124 to 21118. [2020-10-27 23:57:51,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21118 states. [2020-10-27 23:57:52,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21118 states to 21118 states and 30302 transitions. [2020-10-27 23:57:52,019 INFO L78 Accepts]: Start accepts. Automaton has 21118 states and 30302 transitions. Word has length 142 [2020-10-27 23:57:52,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:57:52,019 INFO L481 AbstractCegarLoop]: Abstraction has 21118 states and 30302 transitions. [2020-10-27 23:57:52,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:57:52,019 INFO L276 IsEmpty]: Start isEmpty. Operand 21118 states and 30302 transitions. [2020-10-27 23:57:52,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-27 23:57:52,035 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:57:52,035 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:57:52,036 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 23:57:52,036 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:57:52,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:57:52,036 INFO L82 PathProgramCache]: Analyzing trace with hash 542070753, now seen corresponding path program 1 times [2020-10-27 23:57:52,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:57:52,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1739467092] [2020-10-27 23:57:52,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:57:52,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:57:52,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:52,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:52,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:52,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:52,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:52,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:55,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:55,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:55,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:55,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:55,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:57,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:57:57,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-27 23:57:57,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 23:57:57,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-27 23:57:57,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:57:57,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:57:57,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 111 [2020-10-27 23:57:57,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 23:57:57,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:57:57,330 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:57:57,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:57:57,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:57:57,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:57:57,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:57:57,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:57:57,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:57:57,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:57:57,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:57:57,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:57:57,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:57:57,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:57:57,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:57:57,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:57:57,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1739467092] [2020-10-27 23:57:57,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:57:57,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:57:57,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826453649] [2020-10-27 23:57:57,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:57:57,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:57:57,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:57:57,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:57:57,374 INFO L87 Difference]: Start difference. First operand 21118 states and 30302 transitions. Second operand 4 states. [2020-10-27 23:57:57,622 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 23:58:00,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:58:00,332 INFO L93 Difference]: Finished difference Result 41107 states and 59307 transitions. [2020-10-27 23:58:00,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:58:00,333 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 144 [2020-10-27 23:58:00,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:58:00,371 INFO L225 Difference]: With dead ends: 41107 [2020-10-27 23:58:00,371 INFO L226 Difference]: Without dead ends: 30152 [2020-10-27 23:58:00,393 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:58:00,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30152 states. [2020-10-27 23:58:01,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30152 to 28126. [2020-10-27 23:58:01,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28126 states. [2020-10-27 23:58:01,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28126 states to 28126 states and 40398 transitions. [2020-10-27 23:58:01,701 INFO L78 Accepts]: Start accepts. Automaton has 28126 states and 40398 transitions. Word has length 144 [2020-10-27 23:58:01,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:58:01,702 INFO L481 AbstractCegarLoop]: Abstraction has 28126 states and 40398 transitions. [2020-10-27 23:58:01,702 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:58:01,702 INFO L276 IsEmpty]: Start isEmpty. Operand 28126 states and 40398 transitions. [2020-10-27 23:58:01,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-27 23:58:01,727 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:58:01,728 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:58:01,728 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 23:58:01,728 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:58:01,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:58:01,729 INFO L82 PathProgramCache]: Analyzing trace with hash 1629204842, now seen corresponding path program 1 times [2020-10-27 23:58:01,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:58:01,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1295477689] [2020-10-27 23:58:01,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:58:01,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:58:01,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:01,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:01,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:02,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:02,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:06,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:58:06,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-27 23:58:06,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 23:58:06,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-27 23:58:06,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:58:06,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:58:06,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-27 23:58:06,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 23:58:06,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:58:07,093 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:58:07,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:58:07,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:58:07,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:07,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:58:07,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:58:07,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:58:07,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 23:58:07,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:58:07,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:58:07,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:58:07,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:58:07,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:58:07,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:58:07,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1295477689] [2020-10-27 23:58:07,140 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:58:07,140 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:58:07,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49475779] [2020-10-27 23:58:07,140 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:58:07,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:58:07,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:58:07,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:58:07,141 INFO L87 Difference]: Start difference. First operand 28126 states and 40398 transitions. Second operand 5 states. [2020-10-27 23:58:09,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:58:09,422 INFO L93 Difference]: Finished difference Result 50217 states and 72140 transitions. [2020-10-27 23:58:09,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:58:09,422 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2020-10-27 23:58:09,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:58:09,449 INFO L225 Difference]: With dead ends: 50217 [2020-10-27 23:58:09,450 INFO L226 Difference]: Without dead ends: 25072 [2020-10-27 23:58:09,476 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:58:09,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25072 states. [2020-10-27 23:58:11,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25072 to 25072. [2020-10-27 23:58:11,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25072 states. [2020-10-27 23:58:11,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25072 states to 25072 states and 35987 transitions. [2020-10-27 23:58:11,106 INFO L78 Accepts]: Start accepts. Automaton has 25072 states and 35987 transitions. Word has length 144 [2020-10-27 23:58:11,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:58:11,106 INFO L481 AbstractCegarLoop]: Abstraction has 25072 states and 35987 transitions. [2020-10-27 23:58:11,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:58:11,106 INFO L276 IsEmpty]: Start isEmpty. Operand 25072 states and 35987 transitions. [2020-10-27 23:58:11,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-27 23:58:11,127 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:58:11,127 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:58:11,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 23:58:11,128 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:58:11,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:58:11,128 INFO L82 PathProgramCache]: Analyzing trace with hash -1185801463, now seen corresponding path program 1 times [2020-10-27 23:58:11,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:58:11,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1294326069] [2020-10-27 23:58:11,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:58:11,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:58:11,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:11,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:11,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:12,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:12,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:12,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:12,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:12,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:12,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:15,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:58:15,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-27 23:58:15,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 23:58:15,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3998 [2020-10-27 23:58:15,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:58:15,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:58:15,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 23:58:15,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 23:58:15,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:58:15,405 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:58:15,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:58:15,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:58:15,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:15,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:58:15,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:58:15,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:58:15,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:58:15,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:58:15,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:58:15,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:58:15,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:58:15,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:58:15,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:58:15,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1294326069] [2020-10-27 23:58:15,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:58:15,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:58:15,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255377275] [2020-10-27 23:58:15,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:58:15,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:58:15,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:58:15,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:58:15,449 INFO L87 Difference]: Start difference. First operand 25072 states and 35987 transitions. Second operand 4 states. [2020-10-27 23:58:15,700 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 23:58:18,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:58:18,308 INFO L93 Difference]: Finished difference Result 44591 states and 64389 transitions. [2020-10-27 23:58:18,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:58:18,308 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 145 [2020-10-27 23:58:18,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:58:18,338 INFO L225 Difference]: With dead ends: 44591 [2020-10-27 23:58:18,339 INFO L226 Difference]: Without dead ends: 32324 [2020-10-27 23:58:18,355 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:58:18,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32324 states. [2020-10-27 23:58:19,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32324 to 27485. [2020-10-27 23:58:19,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27485 states. [2020-10-27 23:58:19,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27485 states to 27485 states and 39449 transitions. [2020-10-27 23:58:19,710 INFO L78 Accepts]: Start accepts. Automaton has 27485 states and 39449 transitions. Word has length 145 [2020-10-27 23:58:19,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:58:19,710 INFO L481 AbstractCegarLoop]: Abstraction has 27485 states and 39449 transitions. [2020-10-27 23:58:19,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:58:19,710 INFO L276 IsEmpty]: Start isEmpty. Operand 27485 states and 39449 transitions. [2020-10-27 23:58:19,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-27 23:58:19,728 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:58:19,729 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:58:19,729 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 23:58:19,729 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:58:19,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:58:19,730 INFO L82 PathProgramCache]: Analyzing trace with hash -1446726795, now seen corresponding path program 1 times [2020-10-27 23:58:19,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:58:19,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1529603485] [2020-10-27 23:58:19,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:58:19,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:58:19,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:19,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:19,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:20,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:20,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:20,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:20,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:20,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:20,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:20,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:22,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:22,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:22,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:24,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:58:24,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-27 23:58:24,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 23:58:24,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 23:58:24,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:58:24,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 23:58:24,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-27 23:58:24,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 23:58:24,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:58:25,184 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 10 [2020-10-27 23:58:25,469 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:58:25,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:58:25,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:58:25,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:25,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:58:25,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:58:25,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:58:25,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 23:58:25,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:58:25,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:58:25,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:58:25,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:58:25,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:58:25,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:58:25,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1529603485] [2020-10-27 23:58:25,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:58:25,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 23:58:25,530 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974193169] [2020-10-27 23:58:25,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 23:58:25,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:58:25,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 23:58:25,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-27 23:58:25,531 INFO L87 Difference]: Start difference. First operand 27485 states and 39449 transitions. Second operand 11 states. [2020-10-27 23:58:25,804 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-27 23:58:33,293 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-10-27 23:58:33,564 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-27 23:58:33,858 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-27 23:58:34,130 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-27 23:58:34,396 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 23:58:34,719 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 200 [2020-10-27 23:58:37,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:58:37,171 INFO L93 Difference]: Finished difference Result 79396 states and 113982 transitions. [2020-10-27 23:58:37,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-27 23:58:37,172 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 147 [2020-10-27 23:58:37,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:58:37,242 INFO L225 Difference]: With dead ends: 79396 [2020-10-27 23:58:37,242 INFO L226 Difference]: Without dead ends: 55260 [2020-10-27 23:58:37,275 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 708 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=474, Invalid=2076, Unknown=0, NotChecked=0, Total=2550 [2020-10-27 23:58:37,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55260 states. [2020-10-27 23:58:39,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55260 to 27902. [2020-10-27 23:58:39,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27902 states. [2020-10-27 23:58:39,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27902 states to 27902 states and 39515 transitions. [2020-10-27 23:58:39,575 INFO L78 Accepts]: Start accepts. Automaton has 27902 states and 39515 transitions. Word has length 147 [2020-10-27 23:58:39,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:58:39,576 INFO L481 AbstractCegarLoop]: Abstraction has 27902 states and 39515 transitions. [2020-10-27 23:58:39,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 23:58:39,576 INFO L276 IsEmpty]: Start isEmpty. Operand 27902 states and 39515 transitions. [2020-10-27 23:58:39,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-27 23:58:39,593 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:58:39,593 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:58:39,593 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 23:58:39,594 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:58:39,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:58:39,594 INFO L82 PathProgramCache]: Analyzing trace with hash -813080111, now seen corresponding path program 1 times [2020-10-27 23:58:39,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:58:39,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2003122101] [2020-10-27 23:58:39,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:58:39,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:58:39,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:39,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:39,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:41,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:44,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:58:44,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-27 23:58:44,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 23:58:44,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4839 [2020-10-27 23:58:44,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:58:44,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:58:44,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-27 23:58:44,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-27 23:58:44,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:58:44,746 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:58:44,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:58:44,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:58:44,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:44,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:58:44,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:58:44,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:58:44,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:58:44,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:58:44,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:58:44,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:58:44,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:58:44,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:58:44,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:58:44,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2003122101] [2020-10-27 23:58:44,783 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:58:44,783 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 23:58:44,783 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336439833] [2020-10-27 23:58:44,783 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 23:58:44,783 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:58:44,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 23:58:44,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:58:44,784 INFO L87 Difference]: Start difference. First operand 27902 states and 39515 transitions. Second operand 6 states. [2020-10-27 23:58:48,865 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 23:58:49,109 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-27 23:58:50,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:58:50,843 INFO L93 Difference]: Finished difference Result 65879 states and 93132 transitions. [2020-10-27 23:58:50,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 23:58:50,843 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 147 [2020-10-27 23:58:50,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:58:50,892 INFO L225 Difference]: With dead ends: 65879 [2020-10-27 23:58:50,892 INFO L226 Difference]: Without dead ends: 40750 [2020-10-27 23:58:50,914 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 23:58:50,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40750 states. [2020-10-27 23:58:53,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40750 to 28553. [2020-10-27 23:58:53,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28553 states. [2020-10-27 23:58:53,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28553 states to 28553 states and 39999 transitions. [2020-10-27 23:58:53,196 INFO L78 Accepts]: Start accepts. Automaton has 28553 states and 39999 transitions. Word has length 147 [2020-10-27 23:58:53,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:58:53,197 INFO L481 AbstractCegarLoop]: Abstraction has 28553 states and 39999 transitions. [2020-10-27 23:58:53,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 23:58:53,197 INFO L276 IsEmpty]: Start isEmpty. Operand 28553 states and 39999 transitions. [2020-10-27 23:58:53,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-27 23:58:53,215 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:58:53,215 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:58:53,215 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 23:58:53,216 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:58:53,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:58:53,216 INFO L82 PathProgramCache]: Analyzing trace with hash -421463096, now seen corresponding path program 1 times [2020-10-27 23:58:53,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:58:53,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [43703966] [2020-10-27 23:58:53,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:58:53,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:58:53,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:53,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:53,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:54,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:54,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:54,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:56,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:58:56,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-27 23:58:56,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 23:58:56,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3303 [2020-10-27 23:58:56,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:58:56,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:58:56,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-27 23:58:56,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-27 23:58:56,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:58:56,800 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:58:56,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:58:56,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:58:56,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:58:56,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:58:56,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:58:56,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:58:56,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 23:58:56,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:58:56,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:58:56,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:58:56,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:58:56,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:58:56,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:58:56,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [43703966] [2020-10-27 23:58:56,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:58:56,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:58:56,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417183456] [2020-10-27 23:58:56,864 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:58:56,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:58:56,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:58:56,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:58:56,865 INFO L87 Difference]: Start difference. First operand 28553 states and 39999 transitions. Second operand 4 states. [2020-10-27 23:58:57,112 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 23:59:00,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:59:00,467 INFO L93 Difference]: Finished difference Result 45310 states and 63607 transitions. [2020-10-27 23:59:00,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:59:00,468 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 147 [2020-10-27 23:59:00,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:59:00,498 INFO L225 Difference]: With dead ends: 45310 [2020-10-27 23:59:00,499 INFO L226 Difference]: Without dead ends: 30258 [2020-10-27 23:59:00,515 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:59:00,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30258 states. [2020-10-27 23:59:02,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30258 to 28553. [2020-10-27 23:59:02,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28553 states. [2020-10-27 23:59:02,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28553 states to 28553 states and 39935 transitions. [2020-10-27 23:59:02,897 INFO L78 Accepts]: Start accepts. Automaton has 28553 states and 39935 transitions. Word has length 147 [2020-10-27 23:59:02,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:59:02,897 INFO L481 AbstractCegarLoop]: Abstraction has 28553 states and 39935 transitions. [2020-10-27 23:59:02,897 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:59:02,897 INFO L276 IsEmpty]: Start isEmpty. Operand 28553 states and 39935 transitions. [2020-10-27 23:59:02,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-27 23:59:02,915 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:59:02,916 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:59:02,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 23:59:02,916 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:59:02,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:59:02,916 INFO L82 PathProgramCache]: Analyzing trace with hash -1333086073, now seen corresponding path program 1 times [2020-10-27 23:59:02,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:59:02,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2041089746] [2020-10-27 23:59:02,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:59:02,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:59:02,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:02,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:03,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:03,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:07,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:59:07,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-27 23:59:07,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 23:59:07,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-27 23:59:07,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:59:07,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 23:59:07,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-27 23:59:07,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-27 23:59:07,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:59:08,218 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:59:08,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:59:08,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:59:08,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:08,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:59:08,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:59:08,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:59:08,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 23:59:08,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:59:08,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:59:08,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:59:08,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:59:08,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:59:08,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:59:08,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2041089746] [2020-10-27 23:59:08,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:59:08,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 23:59:08,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561290304] [2020-10-27 23:59:08,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 23:59:08,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:59:08,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 23:59:08,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:59:08,255 INFO L87 Difference]: Start difference. First operand 28553 states and 39935 transitions. Second operand 6 states. [2020-10-27 23:59:12,816 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 23:59:13,069 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-27 23:59:14,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:59:14,593 INFO L93 Difference]: Finished difference Result 68693 states and 96043 transitions. [2020-10-27 23:59:14,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 23:59:14,594 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 147 [2020-10-27 23:59:14,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:59:14,636 INFO L225 Difference]: With dead ends: 68693 [2020-10-27 23:59:14,637 INFO L226 Difference]: Without dead ends: 42001 [2020-10-27 23:59:14,661 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 23:59:14,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42001 states. [2020-10-27 23:59:17,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42001 to 29127. [2020-10-27 23:59:17,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29127 states. [2020-10-27 23:59:17,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29127 states to 29127 states and 40375 transitions. [2020-10-27 23:59:17,124 INFO L78 Accepts]: Start accepts. Automaton has 29127 states and 40375 transitions. Word has length 147 [2020-10-27 23:59:17,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:59:17,124 INFO L481 AbstractCegarLoop]: Abstraction has 29127 states and 40375 transitions. [2020-10-27 23:59:17,124 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 23:59:17,124 INFO L276 IsEmpty]: Start isEmpty. Operand 29127 states and 40375 transitions. [2020-10-27 23:59:17,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-27 23:59:17,143 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:59:17,143 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:59:17,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 23:59:17,143 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:59:17,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:59:17,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1152892144, now seen corresponding path program 1 times [2020-10-27 23:59:17,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:59:17,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [509639173] [2020-10-27 23:59:17,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:59:17,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:59:17,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:17,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:17,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:17,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:17,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:17,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:17,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:18,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:22,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:59:22,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-27 23:59:22,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 23:59:22,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 23:59:22,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:59:22,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 23:59:22,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-27 23:59:22,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-27 23:59:22,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:59:22,816 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 23:59:22,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:59:22,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:59:22,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:59:22,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:59:22,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:59:22,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:59:22,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 23:59:22,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:59:22,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:59:22,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:59:22,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:59:22,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:59:22,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 23:59:22,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [509639173] [2020-10-27 23:59:22,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:59:22,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 23:59:22,873 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272661426] [2020-10-27 23:59:22,874 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 23:59:22,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:59:22,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 23:59:22,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-27 23:59:22,874 INFO L87 Difference]: Start difference. First operand 29127 states and 40375 transitions. Second operand 12 states. [2020-10-27 23:59:34,155 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 202 [2020-10-27 23:59:34,443 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-27 23:59:34,730 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-27 23:59:35,047 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 195 [2020-10-27 23:59:35,323 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-27 23:59:35,573 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-27 23:59:35,897 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 23:59:36,374 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 201 [2020-10-27 23:59:40,484 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 26 [2020-10-27 23:59:42,213 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 198