/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 19:13:17,191 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 19:13:17,194 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 19:13:17,252 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 19:13:17,253 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 19:13:17,259 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 19:13:17,262 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 19:13:17,266 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 19:13:17,270 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 19:13:17,276 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 19:13:17,278 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 19:13:17,280 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 19:13:17,280 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 19:13:17,284 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 19:13:17,287 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 19:13:17,290 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 19:13:17,291 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 19:13:17,295 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 19:13:17,304 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 19:13:17,319 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 19:13:17,321 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 19:13:17,323 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 19:13:17,325 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 19:13:17,327 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 19:13:17,336 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 19:13:17,336 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 19:13:17,337 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 19:13:17,339 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 19:13:17,340 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 19:13:17,341 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 19:13:17,342 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 19:13:17,343 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 19:13:17,345 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 19:13:17,346 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 19:13:17,347 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 19:13:17,348 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 19:13:17,348 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 19:13:17,349 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 19:13:17,349 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 19:13:17,350 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 19:13:17,351 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 19:13:17,359 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 19:13:17,414 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 19:13:17,414 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 19:13:17,419 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 19:13:17,419 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 19:13:17,420 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 19:13:17,420 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 19:13:17,420 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 19:13:17,420 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 19:13:17,421 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 19:13:17,421 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 19:13:17,422 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 19:13:17,423 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 19:13:17,423 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 19:13:17,423 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 19:13:17,423 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 19:13:17,424 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 19:13:17,424 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 19:13:17,424 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 19:13:17,425 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 19:13:17,425 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 19:13:17,425 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 19:13:17,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 19:13:17,426 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 19:13:17,426 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 19:13:17,426 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 19:13:17,426 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 19:13:17,427 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 19:13:17,427 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 19:13:17,427 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 19:13:17,427 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 19:13:17,930 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 19:13:17,968 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 19:13:17,972 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 19:13:17,973 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 19:13:17,974 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 19:13:17,975 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-28 19:13:18,068 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/533853e45/44aef68a4628459ea88b4c49946f0fe3/FLAGad9dcfade [2020-10-28 19:13:18,864 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 19:13:18,867 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-28 19:13:18,886 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/533853e45/44aef68a4628459ea88b4c49946f0fe3/FLAGad9dcfade [2020-10-28 19:13:19,080 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/533853e45/44aef68a4628459ea88b4c49946f0fe3 [2020-10-28 19:13:19,084 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 19:13:19,090 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 19:13:19,093 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 19:13:19,094 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 19:13:19,098 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 19:13:19,099 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 07:13:19" (1/1) ... [2020-10-28 19:13:19,104 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@243957e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:13:19, skipping insertion in model container [2020-10-28 19:13:19,104 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 07:13:19" (1/1) ... [2020-10-28 19:13:19,113 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 19:13:19,206 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 19:13:19,792 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 19:13:19,817 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 19:13:20,274 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 19:13:20,307 INFO L208 MainTranslator]: Completed translation [2020-10-28 19:13:20,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:13:20 WrapperNode [2020-10-28 19:13:20,309 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 19:13:20,310 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 19:13:20,311 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 19:13:20,311 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 19:13:20,326 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:13:20" (1/1) ... [2020-10-28 19:13:20,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:13:20" (1/1) ... [2020-10-28 19:13:20,372 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:13:20" (1/1) ... [2020-10-28 19:13:20,373 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:13:20" (1/1) ... [2020-10-28 19:13:20,439 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:13:20" (1/1) ... [2020-10-28 19:13:20,470 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:13:20" (1/1) ... [2020-10-28 19:13:20,479 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:13:20" (1/1) ... [2020-10-28 19:13:20,491 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 19:13:20,496 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 19:13:20,497 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 19:13:20,497 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 19:13:20,499 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:13:20" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 19:13:20,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 19:13:20,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 19:13:20,578 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 19:13:20,578 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 19:13:20,578 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 19:13:20,579 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 19:13:20,579 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 19:13:20,579 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 19:13:20,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 19:13:20,579 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 19:13:20,579 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 19:13:20,580 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 19:13:20,580 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 19:13:20,580 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 19:13:20,580 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 19:13:20,580 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 19:13:20,580 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 19:13:20,580 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 19:13:20,581 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 19:13:20,581 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 19:13:20,581 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 19:13:20,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 19:13:20,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 19:13:20,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 19:13:20,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 19:13:20,582 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 19:13:20,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 19:13:22,284 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 19:13:22,284 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 19:13:22,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 07:13:22 BoogieIcfgContainer [2020-10-28 19:13:22,288 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 19:13:22,289 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 19:13:22,290 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 19:13:22,293 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 19:13:22,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 07:13:19" (1/3) ... [2020-10-28 19:13:22,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4971ff50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 07:13:22, skipping insertion in model container [2020-10-28 19:13:22,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:13:20" (2/3) ... [2020-10-28 19:13:22,296 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4971ff50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 07:13:22, skipping insertion in model container [2020-10-28 19:13:22,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 07:13:22" (3/3) ... [2020-10-28 19:13:22,298 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-28 19:13:22,311 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 19:13:22,317 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 19:13:22,352 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 19:13:22,385 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 19:13:22,385 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 19:13:22,386 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 19:13:22,386 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 19:13:22,386 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 19:13:22,386 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 19:13:22,386 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 19:13:22,386 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 19:13:22,416 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states. [2020-10-28 19:13:22,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-28 19:13:22,435 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:13:22,436 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:13:22,437 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:13:22,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:13:22,444 INFO L82 PathProgramCache]: Analyzing trace with hash 685556332, now seen corresponding path program 1 times [2020-10-28 19:13:22,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:13:22,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1130456953] [2020-10-28 19:13:22,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:13:22,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:13:23,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:23,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:23,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:23,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:24,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:24,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:24,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:24,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:24,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:25,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:25,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:27,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:13:27,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-28 19:13:27,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 19:13:27,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-28 19:13:27,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:13:27,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:13:27,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:13:27,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-28 19:13:27,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-28 19:13:27,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 11 [2020-10-28 19:13:28,537 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-28 19:13:28,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:13:28,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:13:28,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:28,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:13:28,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:13:28,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:13:28,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 19:13:28,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:13:28,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:13:28,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:13:28,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:13:28,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:13:28,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:13:28,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:13:28,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1130456953] [2020-10-28 19:13:28,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:13:28,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:13:28,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109072980] [2020-10-28 19:13:28,649 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:13:28,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:13:28,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:13:28,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:13:28,668 INFO L87 Difference]: Start difference. First operand 422 states. Second operand 4 states. [2020-10-28 19:13:29,167 WARN L193 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 233 [2020-10-28 19:13:32,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:13:32,010 INFO L93 Difference]: Finished difference Result 752 states and 1319 transitions. [2020-10-28 19:13:32,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:13:32,012 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 153 [2020-10-28 19:13:32,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:13:32,034 INFO L225 Difference]: With dead ends: 752 [2020-10-28 19:13:32,034 INFO L226 Difference]: Without dead ends: 597 [2020-10-28 19:13:32,039 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:13:32,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2020-10-28 19:13:32,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 594. [2020-10-28 19:13:32,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 594 states. [2020-10-28 19:13:32,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 877 transitions. [2020-10-28 19:13:32,138 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 877 transitions. Word has length 153 [2020-10-28 19:13:32,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:13:32,139 INFO L481 AbstractCegarLoop]: Abstraction has 594 states and 877 transitions. [2020-10-28 19:13:32,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:13:32,140 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 877 transitions. [2020-10-28 19:13:32,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-28 19:13:32,148 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:13:32,150 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:13:32,150 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 19:13:32,150 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:13:32,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:13:32,153 INFO L82 PathProgramCache]: Analyzing trace with hash -620802245, now seen corresponding path program 1 times [2020-10-28 19:13:32,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:13:32,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [975926698] [2020-10-28 19:13:32,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:13:32,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:13:32,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:32,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:32,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:32,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:32,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:33,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:33,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:33,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:33,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:33,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:36,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:36,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:37,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:13:37,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-28 19:13:37,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 19:13:37,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 19:13:37,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:13:37,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:13:37,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:13:37,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:13:37,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-28 19:13:37,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 19:13:37,918 WARN L193 SmtUtils]: Spent 401.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-28 19:13:37,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:13:37,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:13:37,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:37,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:13:37,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:13:37,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:13:37,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 19:13:37,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:13:37,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:13:37,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:13:37,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:13:37,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:13:37,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:13:38,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:13:38,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [975926698] [2020-10-28 19:13:38,039 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:13:38,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:13:38,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018578580] [2020-10-28 19:13:38,041 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:13:38,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:13:38,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:13:38,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:13:38,042 INFO L87 Difference]: Start difference. First operand 594 states and 877 transitions. Second operand 5 states. [2020-10-28 19:13:40,892 WARN L193 SmtUtils]: Spent 439.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2020-10-28 19:13:42,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:13:42,233 INFO L93 Difference]: Finished difference Result 1716 states and 2524 transitions. [2020-10-28 19:13:42,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:13:42,234 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-10-28 19:13:42,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:13:42,242 INFO L225 Difference]: With dead ends: 1716 [2020-10-28 19:13:42,243 INFO L226 Difference]: Without dead ends: 1139 [2020-10-28 19:13:42,251 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:13:42,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1139 states. [2020-10-28 19:13:42,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1139 to 1121. [2020-10-28 19:13:42,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1121 states. [2020-10-28 19:13:42,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1121 states to 1121 states and 1640 transitions. [2020-10-28 19:13:42,365 INFO L78 Accepts]: Start accepts. Automaton has 1121 states and 1640 transitions. Word has length 153 [2020-10-28 19:13:42,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:13:42,368 INFO L481 AbstractCegarLoop]: Abstraction has 1121 states and 1640 transitions. [2020-10-28 19:13:42,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:13:42,368 INFO L276 IsEmpty]: Start isEmpty. Operand 1121 states and 1640 transitions. [2020-10-28 19:13:42,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-28 19:13:42,376 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:13:42,376 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:13:42,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 19:13:42,377 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:13:42,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:13:42,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1606842825, now seen corresponding path program 1 times [2020-10-28 19:13:42,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:13:42,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [211479133] [2020-10-28 19:13:42,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:13:42,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:13:42,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:42,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:42,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:42,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:42,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:42,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:42,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:43,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:43,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:43,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:45,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:46,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:47,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:13:47,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-28 19:13:47,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 19:13:47,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 19:13:47,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:13:47,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:13:47,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:13:47,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:13:47,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-28 19:13:47,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:13:47,952 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-28 19:13:47,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:13:47,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:13:47,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:47,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:13:47,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:13:47,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:13:47,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 19:13:47,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:13:47,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:13:47,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:13:47,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:13:47,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:13:47,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:13:48,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:13:48,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [211479133] [2020-10-28 19:13:48,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:13:48,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:13:48,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116952529] [2020-10-28 19:13:48,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:13:48,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:13:48,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:13:48,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:13:48,065 INFO L87 Difference]: Start difference. First operand 1121 states and 1640 transitions. Second operand 5 states. [2020-10-28 19:13:50,673 WARN L193 SmtUtils]: Spent 478.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2020-10-28 19:13:52,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:13:52,026 INFO L93 Difference]: Finished difference Result 3248 states and 4734 transitions. [2020-10-28 19:13:52,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:13:52,031 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-10-28 19:13:52,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:13:52,046 INFO L225 Difference]: With dead ends: 3248 [2020-10-28 19:13:52,047 INFO L226 Difference]: Without dead ends: 2157 [2020-10-28 19:13:52,050 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:13:52,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2157 states. [2020-10-28 19:13:52,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2157 to 2130. [2020-10-28 19:13:52,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2130 states. [2020-10-28 19:13:52,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2130 states to 2130 states and 3084 transitions. [2020-10-28 19:13:52,165 INFO L78 Accepts]: Start accepts. Automaton has 2130 states and 3084 transitions. Word has length 154 [2020-10-28 19:13:52,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:13:52,166 INFO L481 AbstractCegarLoop]: Abstraction has 2130 states and 3084 transitions. [2020-10-28 19:13:52,166 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:13:52,166 INFO L276 IsEmpty]: Start isEmpty. Operand 2130 states and 3084 transitions. [2020-10-28 19:13:52,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-28 19:13:52,171 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:13:52,171 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:13:52,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 19:13:52,171 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:13:52,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:13:52,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1385120506, now seen corresponding path program 1 times [2020-10-28 19:13:52,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:13:52,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [343455662] [2020-10-28 19:13:52,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:13:52,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:13:52,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:52,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:52,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:52,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:52,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:52,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:53,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:54,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:57,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:13:57,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 19:13:57,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 19:13:57,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-28 19:13:57,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:13:57,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:13:57,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:13:57,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:13:57,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 19:13:57,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:13:57,903 WARN L193 SmtUtils]: Spent 530.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-28 19:13:57,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:13:57,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:13:57,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:13:57,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:13:57,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:13:57,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:13:57,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 19:13:57,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:13:57,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:13:57,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:13:57,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:13:57,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:13:57,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:13:58,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:13:58,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [343455662] [2020-10-28 19:13:58,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:13:58,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:13:58,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836523087] [2020-10-28 19:13:58,052 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:13:58,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:13:58,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:13:58,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:13:58,053 INFO L87 Difference]: Start difference. First operand 2130 states and 3084 transitions. Second operand 5 states. [2020-10-28 19:14:00,944 WARN L193 SmtUtils]: Spent 466.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2020-10-28 19:14:02,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:14:02,360 INFO L93 Difference]: Finished difference Result 6198 states and 8939 transitions. [2020-10-28 19:14:02,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:14:02,364 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2020-10-28 19:14:02,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:14:02,386 INFO L225 Difference]: With dead ends: 6198 [2020-10-28 19:14:02,387 INFO L226 Difference]: Without dead ends: 4115 [2020-10-28 19:14:02,393 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:14:02,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4115 states. [2020-10-28 19:14:02,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4115 to 4088. [2020-10-28 19:14:02,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4088 states. [2020-10-28 19:14:02,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4088 states to 4088 states and 5841 transitions. [2020-10-28 19:14:02,586 INFO L78 Accepts]: Start accepts. Automaton has 4088 states and 5841 transitions. Word has length 155 [2020-10-28 19:14:02,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:14:02,590 INFO L481 AbstractCegarLoop]: Abstraction has 4088 states and 5841 transitions. [2020-10-28 19:14:02,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:14:02,591 INFO L276 IsEmpty]: Start isEmpty. Operand 4088 states and 5841 transitions. [2020-10-28 19:14:02,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-28 19:14:02,598 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:14:02,598 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:14:02,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 19:14:02,598 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:14:02,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:14:02,599 INFO L82 PathProgramCache]: Analyzing trace with hash -1051018008, now seen corresponding path program 1 times [2020-10-28 19:14:02,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:14:02,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1460713498] [2020-10-28 19:14:02,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:14:02,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:14:02,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:14:02,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:14:02,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:14:02,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:14:02,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:14:02,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:14:03,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:14:04,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:14:04,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:14:07,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:14:07,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 19:14:07,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 19:14:07,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 19:14:07,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:14:07,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:14:07,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:14:07,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:14:07,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 19:14:07,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:14:08,276 WARN L193 SmtUtils]: Spent 454.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-28 19:14:08,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:14:08,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:14:08,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:14:08,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:14:08,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:14:08,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:14:08,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 19:14:08,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:14:08,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:14:08,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:14:08,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:14:08,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:14:08,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:14:08,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:14:08,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1460713498] [2020-10-28 19:14:08,391 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:14:08,391 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:14:08,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089816963] [2020-10-28 19:14:08,393 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:14:08,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:14:08,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:14:08,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:14:08,402 INFO L87 Difference]: Start difference. First operand 4088 states and 5841 transitions. Second operand 5 states. [2020-10-28 19:14:11,707 WARN L193 SmtUtils]: Spent 505.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2020-10-28 19:14:13,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:14:13,433 INFO L93 Difference]: Finished difference Result 11589 states and 16559 transitions. [2020-10-28 19:14:13,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:14:13,437 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-10-28 19:14:13,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:14:13,471 INFO L225 Difference]: With dead ends: 11589 [2020-10-28 19:14:13,472 INFO L226 Difference]: Without dead ends: 7875 [2020-10-28 19:14:13,481 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:14:13,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7875 states. [2020-10-28 19:14:13,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7875 to 7854. [2020-10-28 19:14:13,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7854 states. [2020-10-28 19:14:13,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7854 states to 7854 states and 11062 transitions. [2020-10-28 19:14:13,945 INFO L78 Accepts]: Start accepts. Automaton has 7854 states and 11062 transitions. Word has length 156 [2020-10-28 19:14:13,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:14:13,946 INFO L481 AbstractCegarLoop]: Abstraction has 7854 states and 11062 transitions. [2020-10-28 19:14:13,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:14:13,946 INFO L276 IsEmpty]: Start isEmpty. Operand 7854 states and 11062 transitions. [2020-10-28 19:14:13,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-28 19:14:13,961 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:14:13,961 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:14:13,963 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 19:14:13,963 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:14:13,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:14:13,964 INFO L82 PathProgramCache]: Analyzing trace with hash -2072569768, now seen corresponding path program 1 times [2020-10-28 19:14:13,964 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:14:13,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [282284781] [2020-10-28 19:14:13,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:14:13,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:14:14,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:14:14,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:14:14,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:14:14,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:14:14,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:14:14,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:14:17,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:14:17,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:14:18,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:14:19,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:14:19,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-28 19:14:19,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 19:14:19,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-28 19:14:19,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:14:19,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:14:19,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:14:19,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:14:19,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-28 19:14:19,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:14:19,544 WARN L193 SmtUtils]: Spent 434.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-28 19:14:19,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:14:19,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:14:19,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:14:19,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:14:19,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:14:19,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:14:19,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 19:14:19,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:14:19,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:14:19,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:14:19,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:14:19,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:14:19,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:14:19,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:14:19,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [282284781] [2020-10-28 19:14:19,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:14:19,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:14:19,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168943805] [2020-10-28 19:14:19,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:14:19,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:14:19,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:14:19,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:14:19,644 INFO L87 Difference]: Start difference. First operand 7854 states and 11062 transitions. Second operand 5 states. [2020-10-28 19:14:23,010 WARN L193 SmtUtils]: Spent 517.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2020-10-28 19:14:24,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:14:24,647 INFO L93 Difference]: Finished difference Result 21237 states and 29746 transitions. [2020-10-28 19:14:24,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:14:24,648 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-10-28 19:14:24,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:14:24,710 INFO L225 Difference]: With dead ends: 21237 [2020-10-28 19:14:24,710 INFO L226 Difference]: Without dead ends: 13773 [2020-10-28 19:14:24,728 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:14:24,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13773 states. [2020-10-28 19:14:25,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13773 to 13742. [2020-10-28 19:14:25,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13742 states. [2020-10-28 19:14:25,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13742 states to 13742 states and 18982 transitions. [2020-10-28 19:14:25,690 INFO L78 Accepts]: Start accepts. Automaton has 13742 states and 18982 transitions. Word has length 157 [2020-10-28 19:14:25,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:14:25,691 INFO L481 AbstractCegarLoop]: Abstraction has 13742 states and 18982 transitions. [2020-10-28 19:14:25,691 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:14:25,691 INFO L276 IsEmpty]: Start isEmpty. Operand 13742 states and 18982 transitions. [2020-10-28 19:14:25,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-28 19:14:25,713 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:14:25,714 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:14:25,714 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 19:14:25,714 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:14:25,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:14:25,715 INFO L82 PathProgramCache]: Analyzing trace with hash 1754524873, now seen corresponding path program 1 times [2020-10-28 19:14:25,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:14:25,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [295457455] [2020-10-28 19:14:25,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:14:25,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:14:25,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:14:25,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:14:25,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:14:25,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:14:25,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:14:25,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:14:30,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:14:30,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-28 19:14:30,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 19:14:30,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 19:14:30,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:14:30,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:14:30,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:14:30,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 19:14:30,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 19:14:30,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:14:31,287 WARN L193 SmtUtils]: Spent 451.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-28 19:14:31,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:14:31,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:14:31,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:14:31,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:14:31,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:14:31,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:14:31,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 19:14:31,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:14:31,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:14:31,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:14:31,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:14:31,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:14:31,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:14:31,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:14:31,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [295457455] [2020-10-28 19:14:31,409 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:14:31,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:14:31,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835579551] [2020-10-28 19:14:31,410 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:14:31,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:14:31,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:14:31,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:14:31,411 INFO L87 Difference]: Start difference. First operand 13742 states and 18982 transitions. Second operand 5 states. [2020-10-28 19:14:34,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:14:34,023 INFO L93 Difference]: Finished difference Result 24265 states and 33496 transitions. [2020-10-28 19:14:34,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:14:34,024 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2020-10-28 19:14:34,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:14:34,047 INFO L225 Difference]: With dead ends: 24265 [2020-10-28 19:14:34,048 INFO L226 Difference]: Without dead ends: 10559 [2020-10-28 19:14:34,074 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 19:14:34,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10559 states. [2020-10-28 19:14:34,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10559 to 10559. [2020-10-28 19:14:34,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10559 states. [2020-10-28 19:14:34,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10559 states to 10559 states and 14559 transitions. [2020-10-28 19:14:34,870 INFO L78 Accepts]: Start accepts. Automaton has 10559 states and 14559 transitions. Word has length 158 [2020-10-28 19:14:34,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:14:34,870 INFO L481 AbstractCegarLoop]: Abstraction has 10559 states and 14559 transitions. [2020-10-28 19:14:34,870 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:14:34,870 INFO L276 IsEmpty]: Start isEmpty. Operand 10559 states and 14559 transitions. [2020-10-28 19:14:34,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-28 19:14:34,889 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:14:34,890 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:14:34,890 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 19:14:34,890 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:14:34,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:14:34,891 INFO L82 PathProgramCache]: Analyzing trace with hash 875763937, now seen corresponding path program 1 times [2020-10-28 19:14:34,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:14:34,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [388361225] [2020-10-28 19:14:34,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:14:34,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:14:34,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:14:35,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:14:35,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:14:35,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:14:35,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:14:35,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:14:35,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:14:35,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:14:39,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:14:39,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-28 19:14:39,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 19:14:39,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 19:14:39,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:14:39,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:14:39,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:14:39,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:14:39,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-28 19:14:39,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:14:40,499 WARN L193 SmtUtils]: Spent 451.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-28 19:14:40,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:14:40,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:14:40,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:14:40,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:14:40,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:14:40,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:14:40,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 19:14:40,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:14:40,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:14:40,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:14:40,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:14:40,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:14:40,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:14:40,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:14:40,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [388361225] [2020-10-28 19:14:40,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:14:40,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:14:40,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497008401] [2020-10-28 19:14:40,592 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:14:40,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:14:40,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:14:40,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:14:40,593 INFO L87 Difference]: Start difference. First operand 10559 states and 14559 transitions. Second operand 5 states. [2020-10-28 19:14:44,380 WARN L193 SmtUtils]: Spent 486.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2020-10-28 19:14:46,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:14:46,303 INFO L93 Difference]: Finished difference Result 26857 states and 37104 transitions. [2020-10-28 19:14:46,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:14:46,304 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 161 [2020-10-28 19:14:46,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:14:46,337 INFO L225 Difference]: With dead ends: 26857 [2020-10-28 19:14:46,337 INFO L226 Difference]: Without dead ends: 17211 [2020-10-28 19:14:46,355 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:14:46,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17211 states. [2020-10-28 19:14:47,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17211 to 17183. [2020-10-28 19:14:47,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17183 states. [2020-10-28 19:14:47,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17183 states to 17183 states and 23323 transitions. [2020-10-28 19:14:47,214 INFO L78 Accepts]: Start accepts. Automaton has 17183 states and 23323 transitions. Word has length 161 [2020-10-28 19:14:47,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:14:47,215 INFO L481 AbstractCegarLoop]: Abstraction has 17183 states and 23323 transitions. [2020-10-28 19:14:47,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:14:47,215 INFO L276 IsEmpty]: Start isEmpty. Operand 17183 states and 23323 transitions. [2020-10-28 19:14:47,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-28 19:14:47,242 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:14:47,242 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:14:47,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 19:14:47,242 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:14:47,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:14:47,243 INFO L82 PathProgramCache]: Analyzing trace with hash -969819118, now seen corresponding path program 1 times [2020-10-28 19:14:47,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:14:47,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [157819527] [2020-10-28 19:14:47,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:14:47,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:14:47,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:14:47,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:14:47,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:14:47,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:14:47,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:14:47,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:14:47,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:14:47,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:14:48,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:14:52,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:14:52,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-28 19:14:52,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 19:14:52,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 19:14:52,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:14:52,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:14:52,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:14:52,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:14:52,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 19:14:52,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:14:52,824 WARN L193 SmtUtils]: Spent 452.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-28 19:14:52,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:14:52,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:14:52,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:14:52,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:14:52,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:14:52,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:14:52,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 19:14:52,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:14:52,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:14:52,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:14:52,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:14:52,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:14:52,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:14:52,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:14:52,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [157819527] [2020-10-28 19:14:52,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:14:52,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:14:52,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438487729] [2020-10-28 19:14:52,886 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:14:52,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:14:52,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:14:52,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:14:52,887 INFO L87 Difference]: Start difference. First operand 17183 states and 23323 transitions. Second operand 5 states. [2020-10-28 19:14:53,408 WARN L193 SmtUtils]: Spent 470.00 ms on a formula simplification that was a NOOP. DAG size: 236 [2020-10-28 19:14:57,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:14:57,999 INFO L93 Difference]: Finished difference Result 30752 states and 41797 transitions. [2020-10-28 19:14:57,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 19:14:57,999 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 162 [2020-10-28 19:14:57,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:14:58,042 INFO L225 Difference]: With dead ends: 30752 [2020-10-28 19:14:58,042 INFO L226 Difference]: Without dead ends: 17172 [2020-10-28 19:14:58,067 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:14:58,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17172 states. [2020-10-28 19:14:59,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17172 to 17152. [2020-10-28 19:14:59,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17152 states. [2020-10-28 19:14:59,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17152 states to 17152 states and 23197 transitions. [2020-10-28 19:14:59,250 INFO L78 Accepts]: Start accepts. Automaton has 17152 states and 23197 transitions. Word has length 162 [2020-10-28 19:14:59,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:14:59,251 INFO L481 AbstractCegarLoop]: Abstraction has 17152 states and 23197 transitions. [2020-10-28 19:14:59,251 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:14:59,251 INFO L276 IsEmpty]: Start isEmpty. Operand 17152 states and 23197 transitions. [2020-10-28 19:14:59,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-28 19:14:59,272 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:14:59,273 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:14:59,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 19:14:59,273 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:14:59,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:14:59,273 INFO L82 PathProgramCache]: Analyzing trace with hash -1365517796, now seen corresponding path program 1 times [2020-10-28 19:14:59,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:14:59,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1681869220] [2020-10-28 19:14:59,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:14:59,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:14:59,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:14:59,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:14:59,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:14:59,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:14:59,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:14:59,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:04,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:15:04,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-28 19:15:04,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 19:15:04,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 19:15:04,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:15:04,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:15:04,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:15:04,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-28 19:15:04,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 19:15:04,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:15:04,861 WARN L193 SmtUtils]: Spent 455.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-28 19:15:04,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:15:04,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:15:04,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:04,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:15:04,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:15:04,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:15:04,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 19:15:04,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:15:04,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:15:04,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:15:04,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:15:04,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:15:04,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:15:04,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:15:04,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1681869220] [2020-10-28 19:15:04,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:15:04,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:15:04,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201012490] [2020-10-28 19:15:04,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:15:04,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:15:04,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:15:04,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:15:04,914 INFO L87 Difference]: Start difference. First operand 17152 states and 23197 transitions. Second operand 5 states. [2020-10-28 19:15:07,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:15:07,674 INFO L93 Difference]: Finished difference Result 30535 states and 41417 transitions. [2020-10-28 19:15:07,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:15:07,675 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 163 [2020-10-28 19:15:07,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:15:07,699 INFO L225 Difference]: With dead ends: 30535 [2020-10-28 19:15:07,699 INFO L226 Difference]: Without dead ends: 13934 [2020-10-28 19:15:07,722 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 19:15:07,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13934 states. [2020-10-28 19:15:08,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13934 to 13934. [2020-10-28 19:15:08,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13934 states. [2020-10-28 19:15:08,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13934 states to 13934 states and 18811 transitions. [2020-10-28 19:15:08,397 INFO L78 Accepts]: Start accepts. Automaton has 13934 states and 18811 transitions. Word has length 163 [2020-10-28 19:15:08,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:15:08,398 INFO L481 AbstractCegarLoop]: Abstraction has 13934 states and 18811 transitions. [2020-10-28 19:15:08,398 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:15:08,398 INFO L276 IsEmpty]: Start isEmpty. Operand 13934 states and 18811 transitions. [2020-10-28 19:15:08,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-28 19:15:08,428 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:15:08,428 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:15:08,428 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 19:15:08,428 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:15:08,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:15:08,429 INFO L82 PathProgramCache]: Analyzing trace with hash -1080121512, now seen corresponding path program 1 times [2020-10-28 19:15:08,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:15:08,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [72410867] [2020-10-28 19:15:08,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:15:08,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:15:08,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:08,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:08,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:08,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:08,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:08,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:13,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:15:13,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-28 19:15:13,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 19:15:13,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 19:15:13,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:15:13,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:15:13,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:15:13,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 19:15:13,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 19:15:13,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:15:14,049 WARN L193 SmtUtils]: Spent 499.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-28 19:15:14,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:15:14,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:15:14,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:14,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:15:14,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:15:14,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:15:14,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 19:15:14,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:15:14,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:15:14,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:15:14,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:15:14,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:15:14,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:15:14,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:15:14,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [72410867] [2020-10-28 19:15:14,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:15:14,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:15:14,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874648656] [2020-10-28 19:15:14,140 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:15:14,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:15:14,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:15:14,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:15:14,141 INFO L87 Difference]: Start difference. First operand 13934 states and 18811 transitions. Second operand 5 states. [2020-10-28 19:15:16,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:15:16,745 INFO L93 Difference]: Finished difference Result 23852 states and 32327 transitions. [2020-10-28 19:15:16,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:15:16,747 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 165 [2020-10-28 19:15:16,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:15:16,763 INFO L225 Difference]: With dead ends: 23852 [2020-10-28 19:15:16,763 INFO L226 Difference]: Without dead ends: 10330 [2020-10-28 19:15:16,779 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 19:15:16,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10330 states. [2020-10-28 19:15:17,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10330 to 10330. [2020-10-28 19:15:17,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10330 states. [2020-10-28 19:15:17,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10330 states to 10330 states and 13977 transitions. [2020-10-28 19:15:17,593 INFO L78 Accepts]: Start accepts. Automaton has 10330 states and 13977 transitions. Word has length 165 [2020-10-28 19:15:17,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:15:17,593 INFO L481 AbstractCegarLoop]: Abstraction has 10330 states and 13977 transitions. [2020-10-28 19:15:17,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:15:17,593 INFO L276 IsEmpty]: Start isEmpty. Operand 10330 states and 13977 transitions. [2020-10-28 19:15:17,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-28 19:15:17,603 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:15:17,603 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:15:17,603 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 19:15:17,604 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:15:17,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:15:17,604 INFO L82 PathProgramCache]: Analyzing trace with hash -1954614291, now seen corresponding path program 1 times [2020-10-28 19:15:17,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:15:17,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [525736530] [2020-10-28 19:15:17,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:15:17,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:15:17,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:17,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:17,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:17,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:17,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:17,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:18,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:22,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:15:22,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-28 19:15:22,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 19:15:22,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 19:15:22,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:15:22,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:15:22,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:15:22,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-28 19:15:22,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-28 19:15:22,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:15:23,170 WARN L193 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-28 19:15:23,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:15:23,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:15:23,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:23,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:15:23,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:15:23,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:15:23,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 19:15:23,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:15:23,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:15:23,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:15:23,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:15:23,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:15:23,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:15:23,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:15:23,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [525736530] [2020-10-28 19:15:23,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:15:23,223 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:15:23,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371773254] [2020-10-28 19:15:23,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:15:23,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:15:23,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:15:23,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:15:23,224 INFO L87 Difference]: Start difference. First operand 10330 states and 13977 transitions. Second operand 5 states. [2020-10-28 19:15:27,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:15:27,538 INFO L93 Difference]: Finished difference Result 24916 states and 34558 transitions. [2020-10-28 19:15:27,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:15:27,540 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 169 [2020-10-28 19:15:27,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:15:27,559 INFO L225 Difference]: With dead ends: 24916 [2020-10-28 19:15:27,559 INFO L226 Difference]: Without dead ends: 18508 [2020-10-28 19:15:27,566 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 19:15:27,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18508 states. [2020-10-28 19:15:28,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18508 to 12114. [2020-10-28 19:15:28,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12114 states. [2020-10-28 19:15:28,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12114 states to 12114 states and 16147 transitions. [2020-10-28 19:15:28,440 INFO L78 Accepts]: Start accepts. Automaton has 12114 states and 16147 transitions. Word has length 169 [2020-10-28 19:15:28,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:15:28,441 INFO L481 AbstractCegarLoop]: Abstraction has 12114 states and 16147 transitions. [2020-10-28 19:15:28,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:15:28,441 INFO L276 IsEmpty]: Start isEmpty. Operand 12114 states and 16147 transitions. [2020-10-28 19:15:28,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-28 19:15:28,451 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:15:28,451 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:15:28,452 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 19:15:28,452 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:15:28,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:15:28,453 INFO L82 PathProgramCache]: Analyzing trace with hash 899131384, now seen corresponding path program 1 times [2020-10-28 19:15:28,453 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:15:28,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [340003566] [2020-10-28 19:15:28,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:15:28,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:15:28,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:28,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:28,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:28,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:28,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:33,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:15:33,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-28 19:15:33,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 19:15:33,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4998 [2020-10-28 19:15:33,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:15:33,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:15:33,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:15:33,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 19:15:33,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 19:15:33,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:15:34,001 WARN L193 SmtUtils]: Spent 453.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-28 19:15:34,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:15:34,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:15:34,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:34,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:15:34,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:15:34,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:15:34,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 19:15:34,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:15:34,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:15:34,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:15:34,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:15:34,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:15:34,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:15:34,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:15:34,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [340003566] [2020-10-28 19:15:34,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:15:34,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:15:34,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060184913] [2020-10-28 19:15:34,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:15:34,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:15:34,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:15:34,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:15:34,065 INFO L87 Difference]: Start difference. First operand 12114 states and 16147 transitions. Second operand 5 states. [2020-10-28 19:15:36,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:15:36,714 INFO L93 Difference]: Finished difference Result 17268 states and 23044 transitions. [2020-10-28 19:15:36,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:15:36,714 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 169 [2020-10-28 19:15:36,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:15:36,725 INFO L225 Difference]: With dead ends: 17268 [2020-10-28 19:15:36,725 INFO L226 Difference]: Without dead ends: 10463 [2020-10-28 19:15:36,733 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 [2020-10-28 19:15:36,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10463 states. [2020-10-28 19:15:37,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10463 to 10463. [2020-10-28 19:15:37,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10463 states. [2020-10-28 19:15:37,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10463 states to 10463 states and 13937 transitions. [2020-10-28 19:15:37,318 INFO L78 Accepts]: Start accepts. Automaton has 10463 states and 13937 transitions. Word has length 169 [2020-10-28 19:15:37,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:15:37,319 INFO L481 AbstractCegarLoop]: Abstraction has 10463 states and 13937 transitions. [2020-10-28 19:15:37,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:15:37,319 INFO L276 IsEmpty]: Start isEmpty. Operand 10463 states and 13937 transitions. [2020-10-28 19:15:37,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-28 19:15:37,327 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:15:37,328 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:15:37,328 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 19:15:37,328 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:15:37,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:15:37,328 INFO L82 PathProgramCache]: Analyzing trace with hash -124024698, now seen corresponding path program 1 times [2020-10-28 19:15:37,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:15:37,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [537824829] [2020-10-28 19:15:37,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:15:37,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:15:37,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:37,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:37,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:37,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:38,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:38,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:39,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:42,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:15:42,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-28 19:15:42,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 19:15:42,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 19:15:42,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:15:42,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:15:42,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:15:42,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-28 19:15:42,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-28 19:15:42,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:15:42,870 WARN L193 SmtUtils]: Spent 424.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-28 19:15:42,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:15:42,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:15:42,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:42,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:15:42,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:15:42,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:15:42,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 19:15:42,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:15:42,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:15:42,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:15:42,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:15:42,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:15:42,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:15:42,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:15:42,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [537824829] [2020-10-28 19:15:42,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:15:42,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:15:42,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830297534] [2020-10-28 19:15:42,922 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:15:42,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:15:42,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:15:42,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:15:42,922 INFO L87 Difference]: Start difference. First operand 10463 states and 13937 transitions. Second operand 5 states. [2020-10-28 19:15:43,389 WARN L193 SmtUtils]: Spent 421.00 ms on a formula simplification that was a NOOP. DAG size: 233 [2020-10-28 19:15:45,930 WARN L193 SmtUtils]: Spent 464.00 ms on a formula simplification that was a NOOP. DAG size: 235 [2020-10-28 19:15:47,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:15:47,085 INFO L93 Difference]: Finished difference Result 18006 states and 25242 transitions. [2020-10-28 19:15:47,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 19:15:47,085 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 171 [2020-10-28 19:15:47,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:15:47,106 INFO L225 Difference]: With dead ends: 18006 [2020-10-28 19:15:47,107 INFO L226 Difference]: Without dead ends: 14822 [2020-10-28 19:15:47,116 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:15:47,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14822 states. [2020-10-28 19:15:48,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14822 to 14819. [2020-10-28 19:15:48,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14819 states. [2020-10-28 19:15:48,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14819 states to 14819 states and 20253 transitions. [2020-10-28 19:15:48,470 INFO L78 Accepts]: Start accepts. Automaton has 14819 states and 20253 transitions. Word has length 171 [2020-10-28 19:15:48,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:15:48,470 INFO L481 AbstractCegarLoop]: Abstraction has 14819 states and 20253 transitions. [2020-10-28 19:15:48,470 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:15:48,470 INFO L276 IsEmpty]: Start isEmpty. Operand 14819 states and 20253 transitions. [2020-10-28 19:15:48,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-28 19:15:48,481 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:15:48,482 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:15:48,482 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 19:15:48,482 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:15:48,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:15:48,483 INFO L82 PathProgramCache]: Analyzing trace with hash -778863207, now seen corresponding path program 1 times [2020-10-28 19:15:48,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:15:48,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1938936691] [2020-10-28 19:15:48,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:15:48,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:15:48,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:48,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:48,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:49,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:15:49,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-28 19:15:49,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 19:15:49,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 835 [2020-10-28 19:15:49,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:15:49,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:15:49,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:15:49,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-28 19:15:49,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 19:15:49,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:15:49,843 WARN L193 SmtUtils]: Spent 446.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-28 19:15:49,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:15:49,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:15:49,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:49,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:15:49,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:15:49,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:15:49,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 19:15:49,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:15:49,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:15:49,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:15:49,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:15:49,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:15:49,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:15:49,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:15:49,909 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1938936691] [2020-10-28 19:15:49,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:15:49,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:15:49,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349140646] [2020-10-28 19:15:49,910 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:15:49,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:15:49,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:15:49,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:15:49,911 INFO L87 Difference]: Start difference. First operand 14819 states and 20253 transitions. Second operand 4 states. [2020-10-28 19:15:53,706 WARN L193 SmtUtils]: Spent 472.00 ms on a formula simplification that was a NOOP. DAG size: 237 [2020-10-28 19:15:54,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:15:54,491 INFO L93 Difference]: Finished difference Result 35735 states and 49688 transitions. [2020-10-28 19:15:54,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:15:54,491 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 171 [2020-10-28 19:15:54,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:15:54,517 INFO L225 Difference]: With dead ends: 35735 [2020-10-28 19:15:54,517 INFO L226 Difference]: Without dead ends: 22204 [2020-10-28 19:15:54,534 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:15:54,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22204 states. [2020-10-28 19:15:55,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22204 to 19567. [2020-10-28 19:15:55,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19567 states. [2020-10-28 19:15:55,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19567 states to 19567 states and 27591 transitions. [2020-10-28 19:15:55,852 INFO L78 Accepts]: Start accepts. Automaton has 19567 states and 27591 transitions. Word has length 171 [2020-10-28 19:15:55,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:15:55,852 INFO L481 AbstractCegarLoop]: Abstraction has 19567 states and 27591 transitions. [2020-10-28 19:15:55,853 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:15:55,853 INFO L276 IsEmpty]: Start isEmpty. Operand 19567 states and 27591 transitions. [2020-10-28 19:15:55,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-28 19:15:55,861 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:15:55,861 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:15:55,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 19:15:55,861 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:15:55,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:15:55,862 INFO L82 PathProgramCache]: Analyzing trace with hash -93819369, now seen corresponding path program 1 times [2020-10-28 19:15:55,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:15:55,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2082190822] [2020-10-28 19:15:55,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:15:55,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:15:55,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:55,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:56,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:15:56,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-28 19:15:56,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 19:15:56,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 581 [2020-10-28 19:15:56,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:15:56,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:15:56,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:15:56,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-28 19:15:56,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 19:15:56,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:15:57,092 WARN L193 SmtUtils]: Spent 570.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-28 19:15:57,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:15:57,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:15:57,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:15:57,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:15:57,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:15:57,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:15:57,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 19:15:57,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:15:57,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:15:57,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:15:57,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:15:57,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:15:57,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:15:57,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:15:57,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2082190822] [2020-10-28 19:15:57,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:15:57,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:15:57,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402993425] [2020-10-28 19:15:57,140 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:15:57,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:15:57,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:15:57,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:15:57,141 INFO L87 Difference]: Start difference. First operand 19567 states and 27591 transitions. Second operand 4 states. [2020-10-28 19:16:01,242 WARN L193 SmtUtils]: Spent 549.00 ms on a formula simplification that was a NOOP. DAG size: 237 [2020-10-28 19:16:02,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:16:02,356 INFO L93 Difference]: Finished difference Result 48619 states and 70047 transitions. [2020-10-28 19:16:02,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:16:02,357 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 174 [2020-10-28 19:16:02,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:16:02,397 INFO L225 Difference]: With dead ends: 48619 [2020-10-28 19:16:02,398 INFO L226 Difference]: Without dead ends: 30120 [2020-10-28 19:16:02,413 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:16:02,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30120 states. [2020-10-28 19:16:04,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30120 to 27985. [2020-10-28 19:16:04,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27985 states. [2020-10-28 19:16:04,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27985 states to 27985 states and 40637 transitions. [2020-10-28 19:16:04,322 INFO L78 Accepts]: Start accepts. Automaton has 27985 states and 40637 transitions. Word has length 174 [2020-10-28 19:16:04,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:16:04,323 INFO L481 AbstractCegarLoop]: Abstraction has 27985 states and 40637 transitions. [2020-10-28 19:16:04,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:16:04,323 INFO L276 IsEmpty]: Start isEmpty. Operand 27985 states and 40637 transitions. [2020-10-28 19:16:04,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-28 19:16:04,331 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:16:04,331 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:16:04,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 19:16:04,332 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:16:04,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:16:04,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1925447671, now seen corresponding path program 1 times [2020-10-28 19:16:04,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:16:04,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2012957258] [2020-10-28 19:16:04,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:16:04,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:16:04,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:04,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:04,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:04,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:05,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:09,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:16:09,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-10-28 19:16:09,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 19:16:09,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-28 19:16:09,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:16:09,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:16:09,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:16:09,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-28 19:16:09,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 19:16:09,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:16:09,845 WARN L193 SmtUtils]: Spent 422.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-28 19:16:09,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:16:09,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:16:09,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:09,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:16:09,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:16:09,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:16:09,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 19:16:09,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:16:09,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:16:09,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:16:09,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:16:09,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:16:09,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:16:09,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:16:09,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2012957258] [2020-10-28 19:16:09,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:16:09,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:16:09,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833466818] [2020-10-28 19:16:09,904 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:16:09,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:16:09,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:16:09,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:16:09,905 INFO L87 Difference]: Start difference. First operand 27985 states and 40637 transitions. Second operand 4 states. [2020-10-28 19:16:14,468 WARN L193 SmtUtils]: Spent 608.00 ms on a formula simplification that was a NOOP. DAG size: 237 [2020-10-28 19:16:16,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:16:16,658 INFO L93 Difference]: Finished difference Result 74551 states and 109788 transitions. [2020-10-28 19:16:16,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:16:16,659 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 177 [2020-10-28 19:16:16,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:16:16,715 INFO L225 Difference]: With dead ends: 74551 [2020-10-28 19:16:16,715 INFO L226 Difference]: Without dead ends: 47414 [2020-10-28 19:16:16,737 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:16:16,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47414 states. [2020-10-28 19:16:20,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47414 to 42897. [2020-10-28 19:16:20,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42897 states. [2020-10-28 19:16:20,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42897 states to 42897 states and 63683 transitions. [2020-10-28 19:16:20,163 INFO L78 Accepts]: Start accepts. Automaton has 42897 states and 63683 transitions. Word has length 177 [2020-10-28 19:16:20,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:16:20,163 INFO L481 AbstractCegarLoop]: Abstraction has 42897 states and 63683 transitions. [2020-10-28 19:16:20,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:16:20,163 INFO L276 IsEmpty]: Start isEmpty. Operand 42897 states and 63683 transitions. [2020-10-28 19:16:20,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-28 19:16:20,176 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:16:20,176 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:16:20,177 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 19:16:20,177 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:16:20,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:16:20,177 INFO L82 PathProgramCache]: Analyzing trace with hash -45361340, now seen corresponding path program 1 times [2020-10-28 19:16:20,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:16:20,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [703707897] [2020-10-28 19:16:20,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:16:20,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:16:20,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:20,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:20,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:20,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:23,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:25,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:16:25,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-28 19:16:25,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 19:16:25,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-28 19:16:25,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:16:25,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:16:25,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 19:16:25,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 19:16:25,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 19:16:25,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:16:25,753 WARN L193 SmtUtils]: Spent 429.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-28 19:16:25,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:16:25,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:16:25,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:25,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:16:25,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:16:25,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:16:25,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 19:16:25,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:16:25,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:16:25,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:16:25,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:16:25,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 19:16:25,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:16:25,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:16:25,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [703707897] [2020-10-28 19:16:25,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:16:25,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:16:25,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748902956] [2020-10-28 19:16:25,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 19:16:25,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:16:25,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 19:16:25,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 19:16:25,827 INFO L87 Difference]: Start difference. First operand 42897 states and 63683 transitions. Second operand 6 states. [2020-10-28 19:16:26,379 WARN L193 SmtUtils]: Spent 494.00 ms on a formula simplification that was a NOOP. DAG size: 238 [2020-10-28 19:16:31,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:16:31,924 INFO L93 Difference]: Finished difference Result 84762 states and 126219 transitions. [2020-10-28 19:16:31,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 19:16:31,925 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 180 [2020-10-28 19:16:31,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:16:31,977 INFO L225 Difference]: With dead ends: 84762 [2020-10-28 19:16:31,978 INFO L226 Difference]: Without dead ends: 42897 [2020-10-28 19:16:32,005 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-28 19:16:32,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42897 states. [2020-10-28 19:16:35,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42897 to 42897. [2020-10-28 19:16:35,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42897 states. [2020-10-28 19:16:35,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42897 states to 42897 states and 63137 transitions. [2020-10-28 19:16:35,912 INFO L78 Accepts]: Start accepts. Automaton has 42897 states and 63137 transitions. Word has length 180 [2020-10-28 19:16:35,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:16:35,913 INFO L481 AbstractCegarLoop]: Abstraction has 42897 states and 63137 transitions. [2020-10-28 19:16:35,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 19:16:35,913 INFO L276 IsEmpty]: Start isEmpty. Operand 42897 states and 63137 transitions. [2020-10-28 19:16:35,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-10-28 19:16:35,922 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:16:35,922 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:16:35,922 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 19:16:35,922 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:16:35,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:16:35,923 INFO L82 PathProgramCache]: Analyzing trace with hash 231735359, now seen corresponding path program 1 times [2020-10-28 19:16:35,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:16:35,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [287493254] [2020-10-28 19:16:35,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:16:35,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:16:36,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:36,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:36,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:36,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:37,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:38,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:40,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:40,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:16:40,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-28 19:16:40,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 19:16:40,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 19:16:40,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:16:40,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:16:40,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 19:16:40,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 19:16:40,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-28 19:16:40,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:16:41,516 WARN L193 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 232 [2020-10-28 19:16:41,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:16:41,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:16:41,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:16:41,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:16:41,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:16:41,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:16:41,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 19:16:41,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:16:41,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:16:41,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:16:41,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:16:41,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 19:16:41,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:16:41,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:16:41,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [287493254] [2020-10-28 19:16:41,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:16:41,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:16:41,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118060770] [2020-10-28 19:16:41,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 19:16:41,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:16:41,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 19:16:41,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 19:16:41,587 INFO L87 Difference]: Start difference. First operand 42897 states and 63137 transitions. Second operand 6 states. [2020-10-28 19:16:42,120 WARN L193 SmtUtils]: Spent 472.00 ms on a formula simplification that was a NOOP. DAG size: 241 [2020-10-28 19:16:44,949 WARN L193 SmtUtils]: Spent 451.00 ms on a formula simplification that was a NOOP. DAG size: 239 [2020-10-28 19:16:50,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:16:50,223 INFO L93 Difference]: Finished difference Result 104011 states and 154005 transitions. [2020-10-28 19:16:50,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 19:16:50,224 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 180 [2020-10-28 19:16:50,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:16:50,299 INFO L225 Difference]: With dead ends: 104011 [2020-10-28 19:16:50,299 INFO L226 Difference]: Without dead ends: 61926 [2020-10-28 19:16:50,333 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-28 19:16:50,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61926 states.