/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 12:19:19,245 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 12:19:19,250 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 12:19:19,308 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 12:19:19,309 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 12:19:19,315 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 12:19:19,318 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 12:19:19,322 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 12:19:19,326 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 12:19:19,332 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 12:19:19,334 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 12:19:19,336 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 12:19:19,337 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 12:19:19,341 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 12:19:19,343 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 12:19:19,345 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 12:19:19,346 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 12:19:19,349 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 12:19:19,379 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 12:19:19,396 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 12:19:19,398 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 12:19:19,404 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 12:19:19,405 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 12:19:19,409 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 12:19:19,416 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 12:19:19,417 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 12:19:19,417 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 12:19:19,420 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 12:19:19,421 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 12:19:19,422 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 12:19:19,422 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 12:19:19,422 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 12:19:19,424 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 12:19:19,425 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 12:19:19,426 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 12:19:19,427 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 12:19:19,427 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 12:19:19,428 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 12:19:19,428 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 12:19:19,429 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 12:19:19,429 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 12:19:19,437 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 12:19:19,484 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 12:19:19,484 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 12:19:19,489 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 12:19:19,489 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 12:19:19,490 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 12:19:19,490 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 12:19:19,490 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 12:19:19,490 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 12:19:19,490 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 12:19:19,491 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 12:19:19,492 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 12:19:19,492 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 12:19:19,492 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 12:19:19,492 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 12:19:19,493 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 12:19:19,493 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 12:19:19,493 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 12:19:19,493 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 12:19:19,493 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 12:19:19,494 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 12:19:19,494 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 12:19:19,494 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 12:19:19,494 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 12:19:19,494 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 12:19:19,495 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 12:19:19,495 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 12:19:19,495 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 12:19:19,495 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 12:19:19,495 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 12:19:19,495 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 12:19:19,880 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 12:19:19,908 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 12:19:19,911 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 12:19:19,912 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 12:19:19,913 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 12:19:19,914 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c [2020-10-29 12:19:20,006 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a721368bb/f4d67a711ab146428a9f90616f117c73/FLAGee896e23d [2020-10-29 12:19:20,610 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 12:19:20,611 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c [2020-10-29 12:19:20,625 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a721368bb/f4d67a711ab146428a9f90616f117c73/FLAGee896e23d [2020-10-29 12:19:20,906 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a721368bb/f4d67a711ab146428a9f90616f117c73 [2020-10-29 12:19:20,911 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 12:19:20,919 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 12:19:20,923 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 12:19:20,924 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 12:19:20,928 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 12:19:20,930 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:19:20" (1/1) ... [2020-10-29 12:19:20,938 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38a28f00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:19:20, skipping insertion in model container [2020-10-29 12:19:20,939 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 12:19:20" (1/1) ... [2020-10-29 12:19:20,948 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 12:19:21,010 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 12:19:21,297 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:19:21,321 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 12:19:21,519 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 12:19:21,559 INFO L208 MainTranslator]: Completed translation [2020-10-29 12:19:21,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:19:21 WrapperNode [2020-10-29 12:19:21,561 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 12:19:21,562 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 12:19:21,562 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 12:19:21,562 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 12:19:21,578 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:19:21" (1/1) ... [2020-10-29 12:19:21,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:19:21" (1/1) ... [2020-10-29 12:19:21,617 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:19:21" (1/1) ... [2020-10-29 12:19:21,617 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:19:21" (1/1) ... [2020-10-29 12:19:21,651 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:19:21" (1/1) ... [2020-10-29 12:19:21,685 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:19:21" (1/1) ... [2020-10-29 12:19:21,693 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:19:21" (1/1) ... [2020-10-29 12:19:21,702 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 12:19:21,706 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 12:19:21,706 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 12:19:21,707 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 12:19:21,708 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:19:21" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 12:19:21,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 12:19:21,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 12:19:21,807 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 12:19:21,807 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-29 12:19:21,807 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-29 12:19:21,808 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-29 12:19:21,808 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-29 12:19:21,808 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-29 12:19:21,809 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 12:19:21,809 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-29 12:19:21,810 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 12:19:21,810 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 12:19:21,810 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 12:19:21,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 12:19:21,811 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 12:19:21,812 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 12:19:21,812 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 12:19:21,812 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 12:19:21,812 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 12:19:21,812 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 12:19:21,812 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 12:19:21,813 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 12:19:21,813 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 12:19:21,813 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 12:19:21,813 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 12:19:21,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 12:19:21,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 12:19:21,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 12:19:21,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 12:19:21,814 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 12:19:21,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 12:19:22,993 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 12:19:22,993 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 12:19:22,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:19:22 BoogieIcfgContainer [2020-10-29 12:19:22,996 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 12:19:22,998 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 12:19:22,998 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 12:19:23,002 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 12:19:23,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 12:19:20" (1/3) ... [2020-10-29 12:19:23,003 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dca183 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:19:23, skipping insertion in model container [2020-10-29 12:19:23,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 12:19:21" (2/3) ... [2020-10-29 12:19:23,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dca183 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 12:19:23, skipping insertion in model container [2020-10-29 12:19:23,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 12:19:22" (3/3) ... [2020-10-29 12:19:23,006 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.3.ufo.BOUNDED-6.pals.c [2020-10-29 12:19:23,018 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 12:19:23,024 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 12:19:23,038 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 12:19:23,072 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 12:19:23,073 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 12:19:23,073 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 12:19:23,073 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 12:19:23,073 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 12:19:23,074 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 12:19:23,074 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 12:19:23,074 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 12:19:23,098 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states. [2020-10-29 12:19:23,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-29 12:19:23,110 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:19:23,111 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] [2020-10-29 12:19:23,111 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:19:23,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:19:23,118 INFO L82 PathProgramCache]: Analyzing trace with hash 916145648, now seen corresponding path program 1 times [2020-10-29 12:19:23,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:19:23,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1249685725] [2020-10-29 12:19:23,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:19:23,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:23,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:23,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:23,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 12:19:23,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:23,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 548 [2020-10-29 12:19:23,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:23,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:23,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:23,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-29 12:19:23,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:23,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 12:19:24,409 WARN L193 SmtUtils]: Spent 368.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 12:19:24,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:19:24,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:24,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:24,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:24,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:19:24,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:24,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 12:19:24,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:24,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:24,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:24,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:24,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:24,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:19:24,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:19:24,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:24,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:24,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:24,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 12:19:24,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:24,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 12:19:24,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:24,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:24,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:24,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:24,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:24,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:19:24,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-29 12:19:24,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:24,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:24,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:24,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:19:24,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:24,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:19:24,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:24,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:24,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:24,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:19:24,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:24,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 12:19:24,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-29 12:19:24,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:24,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:24,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:24,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:19:24,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:24,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:19:24,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:24,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:24,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:24,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:19:24,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:24,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:24,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 12:19:24,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:24,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:24,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:24,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:19:24,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:24,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:19:24,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:24,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:24,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:24,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:19:24,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:24,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:24,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-29 12:19:24,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:24,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:24,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:24,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:19:24,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:24,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:19:24,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:24,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:24,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:24,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:19:24,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:24,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:24,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:19:24,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1249685725] [2020-10-29 12:19:24,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:19:24,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 12:19:24,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183835893] [2020-10-29 12:19:24,785 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 12:19:24,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:19:24,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 12:19:24,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 12:19:24,803 INFO L87 Difference]: Start difference. First operand 159 states. Second operand 6 states. [2020-10-29 12:19:26,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:19:26,093 INFO L93 Difference]: Finished difference Result 263 states and 417 transitions. [2020-10-29 12:19:26,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 12:19:26,095 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-10-29 12:19:26,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:19:26,108 INFO L225 Difference]: With dead ends: 263 [2020-10-29 12:19:26,108 INFO L226 Difference]: Without dead ends: 163 [2020-10-29 12:19:26,112 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:19:26,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-29 12:19:26,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 151. [2020-10-29 12:19:26,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-29 12:19:26,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 244 transitions. [2020-10-29 12:19:26,177 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 244 transitions. Word has length 59 [2020-10-29 12:19:26,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:19:26,177 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 244 transitions. [2020-10-29 12:19:26,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 12:19:26,177 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 244 transitions. [2020-10-29 12:19:26,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-29 12:19:26,181 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:19:26,181 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] [2020-10-29 12:19:26,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 12:19:26,181 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:19:26,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:19:26,182 INFO L82 PathProgramCache]: Analyzing trace with hash -1327837650, now seen corresponding path program 1 times [2020-10-29 12:19:26,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:19:26,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1507425325] [2020-10-29 12:19:26,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:19:26,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:26,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:26,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:26,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 12:19:26,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:26,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 668 [2020-10-29 12:19:26,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:26,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:26,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:19:26,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-29 12:19:26,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:19:26,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:19:27,218 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 12:19:27,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:19:27,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:27,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:27,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:27,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:19:27,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:27,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 12:19:27,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:27,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:27,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:27,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:27,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:27,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:19:27,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:19:27,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:27,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:27,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:27,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 12:19:27,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:27,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-29 12:19:27,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:27,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:27,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:19:27,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:27,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 12:19:27,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:27,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-29 12:19:27,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:27,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:27,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:27,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:19:27,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:27,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:19:27,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:27,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:27,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:27,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:19:27,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:27,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:27,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-29 12:19:27,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:27,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:27,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:27,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:19:27,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:27,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:19:27,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:27,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:27,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:27,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:19:27,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:27,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:27,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 12:19:27,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:27,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:27,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:27,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:19:27,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:27,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:19:27,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:27,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:27,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:27,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:19:27,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:27,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-29 12:19:27,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-29 12:19:27,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:27,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:27,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:27,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:19:27,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:27,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:19:27,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:27,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:27,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:27,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:19:27,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:27,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:19:27,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:19:27,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1507425325] [2020-10-29 12:19:27,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:19:27,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-29 12:19:27,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869979232] [2020-10-29 12:19:27,703 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 12:19:27,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:19:27,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 12:19:27,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-29 12:19:27,716 INFO L87 Difference]: Start difference. First operand 151 states and 244 transitions. Second operand 10 states. [2020-10-29 12:19:28,376 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-29 12:19:28,753 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-29 12:19:30,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:19:30,424 INFO L93 Difference]: Finished difference Result 264 states and 416 transitions. [2020-10-29 12:19:30,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 12:19:30,425 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 59 [2020-10-29 12:19:30,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:19:30,429 INFO L225 Difference]: With dead ends: 264 [2020-10-29 12:19:30,429 INFO L226 Difference]: Without dead ends: 172 [2020-10-29 12:19:30,430 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-10-29 12:19:30,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-29 12:19:30,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 151. [2020-10-29 12:19:30,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-29 12:19:30,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 217 transitions. [2020-10-29 12:19:30,471 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 217 transitions. Word has length 59 [2020-10-29 12:19:30,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:19:30,472 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 217 transitions. [2020-10-29 12:19:30,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 12:19:30,472 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 217 transitions. [2020-10-29 12:19:30,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-29 12:19:30,483 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:19:30,484 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] [2020-10-29 12:19:30,484 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 12:19:30,484 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:19:30,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:19:30,485 INFO L82 PathProgramCache]: Analyzing trace with hash 242313367, now seen corresponding path program 1 times [2020-10-29 12:19:30,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:19:30,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [471754262] [2020-10-29 12:19:30,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:19:30,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:30,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:30,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:30,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:32,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:35,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:35,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-29 12:19:35,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:19:35,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 12:19:35,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:35,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:35,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:19:35,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-29 12:19:35,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 12:19:35,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:19:35,878 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 12:19:35,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:19:35,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:35,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:35,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:35,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:19:35,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:35,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 12:19:35,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:35,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:35,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:35,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:35,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:35,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:35,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:19:35,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:35,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:35,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:35,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 12:19:35,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:35,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-29 12:19:35,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:35,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:35,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:19:35,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:35,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 12:19:35,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:19:36,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:19:36,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:36,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:36,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:36,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:19:36,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:36,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:19:36,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:36,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:36,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:19:36,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:36,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:19:36,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:36,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-29 12:19:36,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:36,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:36,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:36,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:19:36,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:36,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 12:19:36,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:36,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:36,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:19:36,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:19:36,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:19:36,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:19:36,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-29 12:19:36,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:36,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:36,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:36,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:19:36,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:36,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:19:36,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:36,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:36,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:36,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:19:36,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:36,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-29 12:19:36,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-29 12:19:36,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:36,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:36,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:36,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:19:36,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:36,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:19:36,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:36,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:36,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:36,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:19:36,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:36,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:36,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:19:36,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [471754262] [2020-10-29 12:19:36,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:19:36,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 12:19:36,254 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565469254] [2020-10-29 12:19:36,255 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:19:36,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:19:36,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:19:36,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:19:36,257 INFO L87 Difference]: Start difference. First operand 151 states and 217 transitions. Second operand 9 states. [2020-10-29 12:19:36,561 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-29 12:19:38,787 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-29 12:19:39,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:19:39,009 INFO L93 Difference]: Finished difference Result 345 states and 515 transitions. [2020-10-29 12:19:39,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 12:19:39,011 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 85 [2020-10-29 12:19:39,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:19:39,015 INFO L225 Difference]: With dead ends: 345 [2020-10-29 12:19:39,015 INFO L226 Difference]: Without dead ends: 259 [2020-10-29 12:19:39,017 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-29 12:19:39,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-10-29 12:19:39,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 229. [2020-10-29 12:19:39,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2020-10-29 12:19:39,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 338 transitions. [2020-10-29 12:19:39,070 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 338 transitions. Word has length 85 [2020-10-29 12:19:39,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:19:39,071 INFO L481 AbstractCegarLoop]: Abstraction has 229 states and 338 transitions. [2020-10-29 12:19:39,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:19:39,071 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 338 transitions. [2020-10-29 12:19:39,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-29 12:19:39,073 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:19:39,073 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] [2020-10-29 12:19:39,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 12:19:39,074 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:19:39,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:19:39,074 INFO L82 PathProgramCache]: Analyzing trace with hash 103053224, now seen corresponding path program 1 times [2020-10-29 12:19:39,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:19:39,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [194813041] [2020-10-29 12:19:39,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:19:39,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:39,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:39,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:39,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:39,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:40,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:44,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:44,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-29 12:19:44,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:19:44,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-29 12:19:44,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:44,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:44,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:19:44,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:19:44,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-29 12:19:44,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 12:19:44,494 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 12:19:44,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:19:44,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:44,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:44,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:44,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:19:44,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:44,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:19:44,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:44,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:44,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:44,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:44,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:44,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 12:19:44,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:19:44,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:44,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:44,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:44,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 12:19:44,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:44,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-29 12:19:44,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:44,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:44,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:19:44,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:44,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:19:44,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:44,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:19:44,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:44,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:44,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:44,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:19:44,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:44,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:19:44,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:44,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:44,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:19:44,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:44,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:19:44,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:44,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-29 12:19:44,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:44,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:44,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:44,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 12:19:44,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:44,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 12:19:44,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:44,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:44,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:19:44,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-29 12:19:44,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:19:44,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:44,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-29 12:19:44,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:44,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:44,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:44,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:19:44,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:44,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:19:44,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:44,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:44,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:44,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:19:44,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:44,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 12:19:44,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-29 12:19:44,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:44,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:44,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:44,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:19:44,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:44,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:19:44,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:44,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:44,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:44,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:19:44,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:44,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:44,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:19:44,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [194813041] [2020-10-29 12:19:44,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:19:44,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 12:19:44,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147079612] [2020-10-29 12:19:44,934 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:19:44,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:19:44,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:19:44,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:19:44,936 INFO L87 Difference]: Start difference. First operand 229 states and 338 transitions. Second operand 9 states. [2020-10-29 12:19:45,283 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-29 12:19:45,627 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-29 12:19:46,031 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-29 12:19:46,882 WARN L193 SmtUtils]: Spent 627.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 183 [2020-10-29 12:19:47,753 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:19:50,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:19:50,563 INFO L93 Difference]: Finished difference Result 814 states and 1203 transitions. [2020-10-29 12:19:50,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 12:19:50,565 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2020-10-29 12:19:50,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:19:50,569 INFO L225 Difference]: With dead ends: 814 [2020-10-29 12:19:50,570 INFO L226 Difference]: Without dead ends: 612 [2020-10-29 12:19:50,573 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-29 12:19:50,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2020-10-29 12:19:50,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 559. [2020-10-29 12:19:50,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2020-10-29 12:19:50,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 817 transitions. [2020-10-29 12:19:50,652 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 817 transitions. Word has length 87 [2020-10-29 12:19:50,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:19:50,652 INFO L481 AbstractCegarLoop]: Abstraction has 559 states and 817 transitions. [2020-10-29 12:19:50,652 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:19:50,652 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 817 transitions. [2020-10-29 12:19:50,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-29 12:19:50,655 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:19:50,656 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] [2020-10-29 12:19:50,656 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 12:19:50,656 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:19:50,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:19:50,656 INFO L82 PathProgramCache]: Analyzing trace with hash -1920761358, now seen corresponding path program 1 times [2020-10-29 12:19:50,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:19:50,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1693131223] [2020-10-29 12:19:50,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:19:50,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:50,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:50,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:50,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:50,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:51,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:54,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:55,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:55,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-29 12:19:55,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:19:55,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-29 12:19:55,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:55,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:55,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:19:55,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:19:55,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-29 12:19:55,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:56,108 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 12:19:56,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:19:56,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:56,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:56,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:56,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:19:56,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:56,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:19:56,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:56,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:56,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:56,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:56,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:56,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:56,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:19:56,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:56,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:56,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:56,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 12:19:56,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:56,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-29 12:19:56,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:56,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:56,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:19:56,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:56,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 12:19:56,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:56,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:19:56,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:56,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:56,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:56,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:19:56,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:56,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:19:56,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:56,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:56,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:19:56,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:19:56,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:19:56,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:56,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-29 12:19:56,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:56,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:56,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:56,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 12:19:56,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:56,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:19:56,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:56,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:56,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:19:56,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-29 12:19:56,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:19:56,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:56,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-29 12:19:56,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:56,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:56,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:56,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:19:56,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:56,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:19:56,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:56,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:56,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:56,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:19:56,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:56,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:56,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-29 12:19:56,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:19:56,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:19:56,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:19:56,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:19:56,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:19:56,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:19:56,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:19:56,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:19:56,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:19:56,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:19:56,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:19:56,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:19:56,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:19:56,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1693131223] [2020-10-29 12:19:56,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:19:56,431 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 12:19:56,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516781475] [2020-10-29 12:19:56,432 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:19:56,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:19:56,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:19:56,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:19:56,433 INFO L87 Difference]: Start difference. First operand 559 states and 817 transitions. Second operand 9 states. [2020-10-29 12:19:56,728 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-29 12:19:57,026 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-29 12:19:57,356 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:19:57,684 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-29 12:19:58,738 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:20:00,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:20:00,875 INFO L93 Difference]: Finished difference Result 1684 states and 2497 transitions. [2020-10-29 12:20:00,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 12:20:00,879 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2020-10-29 12:20:00,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:20:00,893 INFO L225 Difference]: With dead ends: 1684 [2020-10-29 12:20:00,894 INFO L226 Difference]: Without dead ends: 1157 [2020-10-29 12:20:00,896 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-10-29 12:20:00,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2020-10-29 12:20:01,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1070. [2020-10-29 12:20:01,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1070 states. [2020-10-29 12:20:01,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 1558 transitions. [2020-10-29 12:20:01,009 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 1558 transitions. Word has length 87 [2020-10-29 12:20:01,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:20:01,009 INFO L481 AbstractCegarLoop]: Abstraction has 1070 states and 1558 transitions. [2020-10-29 12:20:01,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:20:01,009 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 1558 transitions. [2020-10-29 12:20:01,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-29 12:20:01,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:20:01,013 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] [2020-10-29 12:20:01,013 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 12:20:01,013 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:20:01,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:20:01,014 INFO L82 PathProgramCache]: Analyzing trace with hash -534939283, now seen corresponding path program 1 times [2020-10-29 12:20:01,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:20:01,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [993409689] [2020-10-29 12:20:01,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:20:01,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:01,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:01,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:01,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:01,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:05,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:06,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:06,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 12:20:06,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:20:06,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 12:20:06,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:06,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:06,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:20:06,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:20:06,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 12:20:06,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:06,418 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 12:20:06,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:20:06,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:06,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:06,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:06,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:20:06,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:06,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:20:06,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:06,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:06,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:06,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:06,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:06,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:06,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:20:06,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:06,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:06,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:06,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 12:20:06,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:06,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-29 12:20:06,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:06,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:06,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:20:06,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:06,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 12:20:06,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:06,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:20:06,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:06,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:06,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:06,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:20:06,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:06,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:20:06,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:06,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:06,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:20:06,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:06,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:20:06,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:06,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-29 12:20:06,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:06,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:06,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:06,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 12:20:06,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:06,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 12:20:06,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:06,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:06,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:20:06,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-29 12:20:06,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:20:06,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:06,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-29 12:20:06,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:06,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:06,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:06,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:20:06,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:06,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:20:06,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:06,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:06,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:06,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:20:06,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:06,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:06,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-29 12:20:06,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:06,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:06,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:06,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:20:06,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:06,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:20:06,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:06,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:06,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:06,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:20:06,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:06,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:06,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:20:06,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [993409689] [2020-10-29 12:20:06,852 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:20:06,852 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 12:20:06,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676454334] [2020-10-29 12:20:06,854 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:20:06,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:20:06,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:20:06,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:20:06,855 INFO L87 Difference]: Start difference. First operand 1070 states and 1558 transitions. Second operand 9 states. [2020-10-29 12:20:07,163 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-29 12:20:07,495 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 12:20:07,820 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-29 12:20:08,768 WARN L193 SmtUtils]: Spent 578.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 183 [2020-10-29 12:20:09,537 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:20:12,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:20:12,522 INFO L93 Difference]: Finished difference Result 3437 states and 5053 transitions. [2020-10-29 12:20:12,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 12:20:12,524 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-10-29 12:20:12,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:20:12,540 INFO L225 Difference]: With dead ends: 3437 [2020-10-29 12:20:12,540 INFO L226 Difference]: Without dead ends: 2571 [2020-10-29 12:20:12,545 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-29 12:20:12,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2571 states. [2020-10-29 12:20:12,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2571 to 2455. [2020-10-29 12:20:12,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2455 states. [2020-10-29 12:20:12,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2455 states to 2455 states and 3548 transitions. [2020-10-29 12:20:12,750 INFO L78 Accepts]: Start accepts. Automaton has 2455 states and 3548 transitions. Word has length 88 [2020-10-29 12:20:12,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:20:12,750 INFO L481 AbstractCegarLoop]: Abstraction has 2455 states and 3548 transitions. [2020-10-29 12:20:12,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:20:12,751 INFO L276 IsEmpty]: Start isEmpty. Operand 2455 states and 3548 transitions. [2020-10-29 12:20:12,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-29 12:20:12,757 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:20:12,757 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] [2020-10-29 12:20:12,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 12:20:12,757 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:20:12,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:20:12,758 INFO L82 PathProgramCache]: Analyzing trace with hash 699191105, now seen corresponding path program 1 times [2020-10-29 12:20:12,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:20:12,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [173822612] [2020-10-29 12:20:12,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:20:12,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:12,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:12,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:12,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:12,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:14,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:14,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:17,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:17,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 12:20:17,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:20:17,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 12:20:17,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:17,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:17,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:20:17,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:20:17,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-29 12:20:17,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:18,082 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 12:20:18,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:20:18,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:18,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:18,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:18,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:20:18,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:18,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:20:18,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:18,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:18,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:18,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:18,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:18,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:18,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:20:18,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:18,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:18,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:18,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:18,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:18,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 12:20:18,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:20:18,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-29 12:20:18,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:18,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:18,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:20:18,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-29 12:20:18,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 12:20:18,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:18,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-29 12:20:18,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:18,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:18,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:18,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:20:18,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:18,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:20:18,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:18,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:18,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:20:18,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:18,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:20:18,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:18,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-29 12:20:18,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:18,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:18,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:18,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 12:20:18,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:18,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:20:18,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:18,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:18,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:20:18,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 12:20:18,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 12:20:18,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:18,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-29 12:20:18,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:18,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:18,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:18,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:20:18,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:18,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:20:18,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:18,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:18,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:18,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:20:18,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:18,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:18,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-29 12:20:18,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:18,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:18,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:18,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:20:18,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:18,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:20:18,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:18,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:18,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:18,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:20:18,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:18,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:18,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:20:18,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [173822612] [2020-10-29 12:20:18,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:20:18,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-29 12:20:18,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814988055] [2020-10-29 12:20:18,523 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 12:20:18,523 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:20:18,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 12:20:18,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-29 12:20:18,533 INFO L87 Difference]: Start difference. First operand 2455 states and 3548 transitions. Second operand 10 states. [2020-10-29 12:20:18,852 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-29 12:20:19,261 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:20:19,559 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-29 12:20:19,892 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-29 12:20:20,270 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-29 12:20:20,588 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-29 12:20:20,992 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 12:20:21,342 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-29 12:20:26,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:20:26,237 INFO L93 Difference]: Finished difference Result 8648 states and 12600 transitions. [2020-10-29 12:20:26,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 12:20:26,238 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 88 [2020-10-29 12:20:26,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:20:26,280 INFO L225 Difference]: With dead ends: 8648 [2020-10-29 12:20:26,280 INFO L226 Difference]: Without dead ends: 6053 [2020-10-29 12:20:26,293 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=189, Invalid=513, Unknown=0, NotChecked=0, Total=702 [2020-10-29 12:20:26,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6053 states. [2020-10-29 12:20:26,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6053 to 5781. [2020-10-29 12:20:26,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5781 states. [2020-10-29 12:20:26,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5781 states to 5781 states and 8402 transitions. [2020-10-29 12:20:26,798 INFO L78 Accepts]: Start accepts. Automaton has 5781 states and 8402 transitions. Word has length 88 [2020-10-29 12:20:26,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:20:26,798 INFO L481 AbstractCegarLoop]: Abstraction has 5781 states and 8402 transitions. [2020-10-29 12:20:26,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 12:20:26,798 INFO L276 IsEmpty]: Start isEmpty. Operand 5781 states and 8402 transitions. [2020-10-29 12:20:26,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-29 12:20:26,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:20:26,813 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] [2020-10-29 12:20:26,813 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 12:20:26,814 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:20:26,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:20:26,814 INFO L82 PathProgramCache]: Analyzing trace with hash 2052829613, now seen corresponding path program 1 times [2020-10-29 12:20:26,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:20:26,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [533112873] [2020-10-29 12:20:26,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:20:26,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:26,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:26,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:27,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:27,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:31,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:31,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-29 12:20:31,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:20:31,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-29 12:20:31,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:31,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:31,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:20:31,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:20:31,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 12:20:31,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:32,237 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 12:20:32,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:20:32,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:32,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:32,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:32,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:20:32,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:32,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:20:32,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:32,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:32,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:32,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:32,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:32,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:32,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:20:32,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:32,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:32,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:32,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 12:20:32,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:32,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 12:20:32,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:32,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:32,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:20:32,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:32,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 12:20:32,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:32,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:20:32,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:32,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:32,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:32,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:20:32,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:32,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:20:32,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:32,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:32,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:20:32,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:32,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:20:32,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:32,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-29 12:20:32,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:32,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:32,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:32,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 12:20:32,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:32,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:20:32,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:32,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:32,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:20:32,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:20:32,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 12:20:32,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:32,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-29 12:20:32,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:32,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:32,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:32,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:20:32,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:32,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:20:32,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:32,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:32,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:32,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:20:32,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:32,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:32,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-29 12:20:32,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:32,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:32,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:32,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:20:32,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:32,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:20:32,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:32,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:32,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:32,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:20:32,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:32,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:32,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:20:32,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [533112873] [2020-10-29 12:20:32,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:20:32,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 12:20:32,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750662025] [2020-10-29 12:20:32,557 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:20:32,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:20:32,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:20:32,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:20:32,558 INFO L87 Difference]: Start difference. First operand 5781 states and 8402 transitions. Second operand 9 states. [2020-10-29 12:20:32,909 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-29 12:20:33,210 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-29 12:20:33,594 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-29 12:20:33,906 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:20:34,755 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:20:37,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:20:37,064 INFO L93 Difference]: Finished difference Result 11160 states and 16106 transitions. [2020-10-29 12:20:37,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 12:20:37,065 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 89 [2020-10-29 12:20:37,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:20:37,094 INFO L225 Difference]: With dead ends: 11160 [2020-10-29 12:20:37,094 INFO L226 Difference]: Without dead ends: 5480 [2020-10-29 12:20:37,110 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-10-29 12:20:37,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5480 states. [2020-10-29 12:20:37,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5480 to 4700. [2020-10-29 12:20:37,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4700 states. [2020-10-29 12:20:37,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4700 states to 4700 states and 6675 transitions. [2020-10-29 12:20:37,510 INFO L78 Accepts]: Start accepts. Automaton has 4700 states and 6675 transitions. Word has length 89 [2020-10-29 12:20:37,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:20:37,510 INFO L481 AbstractCegarLoop]: Abstraction has 4700 states and 6675 transitions. [2020-10-29 12:20:37,510 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:20:37,510 INFO L276 IsEmpty]: Start isEmpty. Operand 4700 states and 6675 transitions. [2020-10-29 12:20:37,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-29 12:20:37,520 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:20:37,520 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] [2020-10-29 12:20:37,521 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 12:20:37,521 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:20:37,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:20:37,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1842944458, now seen corresponding path program 1 times [2020-10-29 12:20:37,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:20:37,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1933701704] [2020-10-29 12:20:37,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:20:37,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:37,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:37,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:37,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:37,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:40,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:42,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:42,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-29 12:20:42,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:20:42,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-29 12:20:42,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:42,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:42,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:20:42,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-29 12:20:42,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-29 12:20:42,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:42,855 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 12:20:42,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:20:42,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:42,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:42,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:42,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:20:42,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:42,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:20:42,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:42,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:42,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:42,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:42,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:42,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:42,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:20:42,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:42,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:42,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:42,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 12:20:42,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:42,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 12:20:42,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:42,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:42,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:20:42,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:42,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 12:20:42,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:42,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:20:42,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:42,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:42,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:42,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:20:42,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:42,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:20:42,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:42,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:42,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:20:42,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:42,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:20:42,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:42,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-29 12:20:42,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:42,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:42,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:42,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 12:20:42,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:42,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:20:42,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:42,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:42,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:20:42,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:42,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:20:43,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:43,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-29 12:20:43,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:43,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:43,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:43,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:20:43,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:43,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:20:43,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:43,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:43,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:20:43,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:20:43,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:20:43,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:43,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-29 12:20:43,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:43,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:43,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:43,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:20:43,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:43,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:20:43,085 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:43,085 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:43,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:43,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:20:43,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:43,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:43,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:20:43,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1933701704] [2020-10-29 12:20:43,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:20:43,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 12:20:43,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167161343] [2020-10-29 12:20:43,100 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:20:43,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:20:43,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:20:43,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:20:43,101 INFO L87 Difference]: Start difference. First operand 4700 states and 6675 transitions. Second operand 9 states. [2020-10-29 12:20:43,430 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-29 12:20:46,095 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-29 12:20:46,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:20:46,356 INFO L93 Difference]: Finished difference Result 10664 states and 15416 transitions. [2020-10-29 12:20:46,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 12:20:46,364 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 89 [2020-10-29 12:20:46,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:20:46,405 INFO L225 Difference]: With dead ends: 10664 [2020-10-29 12:20:46,405 INFO L226 Difference]: Without dead ends: 7343 [2020-10-29 12:20:46,417 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2020-10-29 12:20:46,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7343 states. [2020-10-29 12:20:46,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7343 to 6935. [2020-10-29 12:20:46,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6935 states. [2020-10-29 12:20:47,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6935 states to 6935 states and 9919 transitions. [2020-10-29 12:20:47,008 INFO L78 Accepts]: Start accepts. Automaton has 6935 states and 9919 transitions. Word has length 89 [2020-10-29 12:20:47,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:20:47,008 INFO L481 AbstractCegarLoop]: Abstraction has 6935 states and 9919 transitions. [2020-10-29 12:20:47,008 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:20:47,008 INFO L276 IsEmpty]: Start isEmpty. Operand 6935 states and 9919 transitions. [2020-10-29 12:20:47,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-29 12:20:47,020 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:20:47,020 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] [2020-10-29 12:20:47,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 12:20:47,021 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:20:47,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:20:47,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1418657603, now seen corresponding path program 1 times [2020-10-29 12:20:47,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:20:47,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [202448300] [2020-10-29 12:20:47,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:20:47,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:47,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:47,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:47,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:47,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:47,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:51,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:51,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:52,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:52,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 12:20:52,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 12:20:52,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 12:20:52,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:52,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:52,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:20:52,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:20:52,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-29 12:20:52,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:52,339 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 12:20:52,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:20:52,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:52,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:52,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:52,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:20:52,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:52,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:20:52,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:52,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:52,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:52,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:52,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:52,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:52,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:20:52,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:52,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:52,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:52,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:52,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:52,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 12:20:52,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 12:20:52,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-29 12:20:52,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:52,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:52,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:20:52,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 12:20:52,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 12:20:52,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:52,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-29 12:20:52,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:52,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:52,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:52,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:20:52,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:52,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:20:52,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:52,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:52,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:20:52,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:52,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:20:52,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:52,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-29 12:20:52,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:52,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:52,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:52,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 12:20:52,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:52,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:20:52,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:52,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:52,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:20:52,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:20:52,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:20:52,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:52,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-29 12:20:52,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:52,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:52,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:52,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 12:20:52,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:52,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 12:20:52,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:52,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:52,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:20:52,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-29 12:20:52,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:20:52,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:52,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-29 12:20:52,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:20:52,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:20:52,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:20:52,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:20:52,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:20:52,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:20:52,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:20:52,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:20:52,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:20:52,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:20:52,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:20:52,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:20:52,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:20:52,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [202448300] [2020-10-29 12:20:52,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:20:52,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-29 12:20:52,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774568957] [2020-10-29 12:20:52,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 12:20:52,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:20:52,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 12:20:52,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-29 12:20:52,701 INFO L87 Difference]: Start difference. First operand 6935 states and 9919 transitions. Second operand 10 states. [2020-10-29 12:20:53,026 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-29 12:20:53,489 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:20:53,944 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-29 12:20:54,294 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-29 12:20:54,653 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-29 12:20:55,016 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 12:20:59,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:20:59,819 INFO L93 Difference]: Finished difference Result 15072 states and 21982 transitions. [2020-10-29 12:20:59,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 12:20:59,826 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 91 [2020-10-29 12:20:59,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:20:59,873 INFO L225 Difference]: With dead ends: 15072 [2020-10-29 12:20:59,874 INFO L226 Difference]: Without dead ends: 8960 [2020-10-29 12:20:59,894 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2020-10-29 12:20:59,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8960 states. [2020-10-29 12:21:00,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8960 to 8760. [2020-10-29 12:21:00,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8760 states. [2020-10-29 12:21:00,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8760 states to 8760 states and 12507 transitions. [2020-10-29 12:21:00,752 INFO L78 Accepts]: Start accepts. Automaton has 8760 states and 12507 transitions. Word has length 91 [2020-10-29 12:21:00,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:21:00,752 INFO L481 AbstractCegarLoop]: Abstraction has 8760 states and 12507 transitions. [2020-10-29 12:21:00,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 12:21:00,752 INFO L276 IsEmpty]: Start isEmpty. Operand 8760 states and 12507 transitions. [2020-10-29 12:21:00,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-29 12:21:00,766 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:21:00,766 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] [2020-10-29 12:21:00,766 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 12:21:00,766 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:21:00,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:21:00,767 INFO L82 PathProgramCache]: Analyzing trace with hash 612164569, now seen corresponding path program 1 times [2020-10-29 12:21:00,767 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:21:00,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1738013582] [2020-10-29 12:21:00,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:21:00,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:00,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:00,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:00,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:00,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:01,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:01,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:05,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:05,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 12:21:05,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:21:05,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-29 12:21:05,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:05,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:05,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:21:05,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:21:05,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 12:21:05,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:06,100 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 12:21:06,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:21:06,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:06,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:06,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:06,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:21:06,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:06,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:21:06,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:06,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:06,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:21:06,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:21:06,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:21:06,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:06,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:21:06,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:06,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:06,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:06,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 12:21:06,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:06,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 12:21:06,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:06,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:06,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:21:06,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:21:06,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 12:21:06,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:06,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:21:06,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:06,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:06,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:06,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:21:06,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:06,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:21:06,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:06,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:06,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:21:06,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:21:06,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:21:06,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:06,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-29 12:21:06,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:06,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:06,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:06,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 12:21:06,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:06,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:21:06,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:06,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:06,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:21:06,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:21:06,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:21:06,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:06,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-29 12:21:06,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:06,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:06,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:06,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 12:21:06,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:06,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:21:06,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:06,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:06,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:21:06,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-29 12:21:06,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 12:21:06,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:06,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-29 12:21:06,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:06,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:06,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:06,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:21:06,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:06,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:21:06,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:06,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:06,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:21:06,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:21:06,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:21:06,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:06,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:21:06,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1738013582] [2020-10-29 12:21:06,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:21:06,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 12:21:06,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952226296] [2020-10-29 12:21:06,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:21:06,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:21:06,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:21:06,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:21:06,386 INFO L87 Difference]: Start difference. First operand 8760 states and 12507 transitions. Second operand 9 states. [2020-10-29 12:21:06,717 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-29 12:21:07,015 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-29 12:21:07,339 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:21:07,691 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-29 12:21:08,633 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:21:11,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:21:11,972 INFO L93 Difference]: Finished difference Result 25363 states and 36668 transitions. [2020-10-29 12:21:11,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 12:21:11,973 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2020-10-29 12:21:11,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:21:12,049 INFO L225 Difference]: With dead ends: 25363 [2020-10-29 12:21:12,049 INFO L226 Difference]: Without dead ends: 16857 [2020-10-29 12:21:12,080 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-10-29 12:21:12,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16857 states. [2020-10-29 12:21:13,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16857 to 16546. [2020-10-29 12:21:13,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16546 states. [2020-10-29 12:21:13,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16546 states to 16546 states and 23350 transitions. [2020-10-29 12:21:13,722 INFO L78 Accepts]: Start accepts. Automaton has 16546 states and 23350 transitions. Word has length 92 [2020-10-29 12:21:13,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:21:13,722 INFO L481 AbstractCegarLoop]: Abstraction has 16546 states and 23350 transitions. [2020-10-29 12:21:13,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:21:13,722 INFO L276 IsEmpty]: Start isEmpty. Operand 16546 states and 23350 transitions. [2020-10-29 12:21:13,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-29 12:21:13,744 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:21:13,744 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] [2020-10-29 12:21:13,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 12:21:13,744 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:21:13,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:21:13,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1648840373, now seen corresponding path program 1 times [2020-10-29 12:21:13,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:21:13,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [378453897] [2020-10-29 12:21:13,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:21:13,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:13,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:13,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:13,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:13,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:14,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:14,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:18,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:18,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 12:21:18,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 12:21:18,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 12:21:18,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:18,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:18,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:21:18,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 12:21:18,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 12:21:18,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:19,073 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 12:21:19,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:21:19,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:19,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:19,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:19,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:21:19,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:19,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:21:19,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:19,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:19,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:21:19,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:21:19,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:21:19,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:19,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:21:19,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:19,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:19,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:19,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:19,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 12:21:19,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 12:21:19,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-29 12:21:19,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:19,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:19,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:21:19,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:21:19,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:21:19,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:19,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-29 12:21:19,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:19,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:19,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:19,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:21:19,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:19,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:21:19,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:19,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:19,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:21:19,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:21:19,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:21:19,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:19,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-29 12:21:19,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:19,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:19,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:19,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-29 12:21:19,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:19,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:21:19,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:19,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:19,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:21:19,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:21:19,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:21:19,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:19,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-29 12:21:19,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:19,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:19,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:19,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 12:21:19,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:19,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:21:19,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:19,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:19,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:21:19,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-29 12:21:19,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 12:21:19,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:19,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-29 12:21:19,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:19,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:19,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:19,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:21:19,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:19,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:21:19,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:19,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:19,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:21:19,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:21:19,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:21:19,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:19,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:21:19,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [378453897] [2020-10-29 12:21:19,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:21:19,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 12:21:19,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249396008] [2020-10-29 12:21:19,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:21:19,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:21:19,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:21:19,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:21:19,443 INFO L87 Difference]: Start difference. First operand 16546 states and 23350 transitions. Second operand 9 states. [2020-10-29 12:21:19,755 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-29 12:21:20,049 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-29 12:21:20,450 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-29 12:21:20,778 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:21:21,510 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:21:24,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:21:24,782 INFO L93 Difference]: Finished difference Result 30598 states and 43202 transitions. [2020-10-29 12:21:24,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 12:21:24,782 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 92 [2020-10-29 12:21:24,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:21:24,844 INFO L225 Difference]: With dead ends: 30598 [2020-10-29 12:21:24,844 INFO L226 Difference]: Without dead ends: 17261 [2020-10-29 12:21:24,880 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-10-29 12:21:24,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17261 states. [2020-10-29 12:21:26,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17261 to 15071. [2020-10-29 12:21:26,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15071 states. [2020-10-29 12:21:26,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15071 states to 15071 states and 21079 transitions. [2020-10-29 12:21:26,124 INFO L78 Accepts]: Start accepts. Automaton has 15071 states and 21079 transitions. Word has length 92 [2020-10-29 12:21:26,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:21:26,124 INFO L481 AbstractCegarLoop]: Abstraction has 15071 states and 21079 transitions. [2020-10-29 12:21:26,124 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:21:26,125 INFO L276 IsEmpty]: Start isEmpty. Operand 15071 states and 21079 transitions. [2020-10-29 12:21:26,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-29 12:21:26,147 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:21:26,147 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] [2020-10-29 12:21:26,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 12:21:26,148 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:21:26,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:21:26,148 INFO L82 PathProgramCache]: Analyzing trace with hash -1048225195, now seen corresponding path program 1 times [2020-10-29 12:21:26,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:21:26,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [488648012] [2020-10-29 12:21:26,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:21:26,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:26,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:26,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:26,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:26,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:26,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:31,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:31,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-29 12:21:31,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:21:31,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 12:21:31,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:31,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:31,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:21:31,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 12:21:31,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 12:21:31,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:31,519 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 12:21:31,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:21:31,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:31,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:31,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:31,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:21:31,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:31,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 12:21:31,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:31,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:31,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:21:31,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:21:31,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 12:21:31,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:31,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:21:31,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:31,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:31,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:31,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 12:21:31,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:31,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 12:21:31,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:31,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:31,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:21:31,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:21:31,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-29 12:21:31,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:31,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:21:31,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:31,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:31,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:31,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:21:31,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:31,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:21:31,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:31,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:31,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:21:31,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:21:31,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:21:31,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:31,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-29 12:21:31,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:31,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:31,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:31,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 12:21:31,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:31,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 12:21:31,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:31,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:31,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:21:31,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:21:31,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 12:21:31,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:31,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-29 12:21:31,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:31,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:31,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:31,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 12:21:31,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:31,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:21:31,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:31,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:31,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:21:31,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 12:21:31,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:21:31,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:31,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-29 12:21:31,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:31,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:31,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:31,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:21:31,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:31,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:21:31,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:31,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:31,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:21:31,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:21:31,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:21:31,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:31,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:21:31,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [488648012] [2020-10-29 12:21:31,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:21:31,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-29 12:21:31,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576622267] [2020-10-29 12:21:31,954 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 12:21:31,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:21:31,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 12:21:31,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-10-29 12:21:31,955 INFO L87 Difference]: Start difference. First operand 15071 states and 21079 transitions. Second operand 14 states. [2020-10-29 12:21:32,330 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 12:21:32,648 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-29 12:21:33,283 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-29 12:21:33,819 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-29 12:21:37,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:21:37,633 INFO L93 Difference]: Finished difference Result 23195 states and 32356 transitions. [2020-10-29 12:21:37,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 12:21:37,634 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 93 [2020-10-29 12:21:37,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:21:37,707 INFO L225 Difference]: With dead ends: 23195 [2020-10-29 12:21:37,707 INFO L226 Difference]: Without dead ends: 18800 [2020-10-29 12:21:37,722 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=247, Invalid=683, Unknown=0, NotChecked=0, Total=930 [2020-10-29 12:21:37,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18800 states. [2020-10-29 12:21:39,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18800 to 17126. [2020-10-29 12:21:39,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17126 states. [2020-10-29 12:21:39,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17126 states to 17126 states and 23782 transitions. [2020-10-29 12:21:39,088 INFO L78 Accepts]: Start accepts. Automaton has 17126 states and 23782 transitions. Word has length 93 [2020-10-29 12:21:39,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:21:39,088 INFO L481 AbstractCegarLoop]: Abstraction has 17126 states and 23782 transitions. [2020-10-29 12:21:39,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 12:21:39,088 INFO L276 IsEmpty]: Start isEmpty. Operand 17126 states and 23782 transitions. [2020-10-29 12:21:39,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-29 12:21:39,117 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:21:39,117 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] [2020-10-29 12:21:39,117 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 12:21:39,118 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:21:39,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:21:39,118 INFO L82 PathProgramCache]: Analyzing trace with hash -1025592941, now seen corresponding path program 1 times [2020-10-29 12:21:39,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:21:39,118 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1670257780] [2020-10-29 12:21:39,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:21:39,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:39,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:39,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:39,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:39,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:40,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:44,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:44,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-29 12:21:44,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:21:44,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 12:21:44,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:44,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:44,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 12:21:44,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 12:21:44,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-29 12:21:44,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:44,468 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 12:21:44,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:21:44,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:44,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:44,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:44,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:21:44,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:44,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 12:21:44,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:44,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:44,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:21:44,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:21:44,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 12:21:44,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:44,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:21:44,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:44,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:44,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:44,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 12:21:44,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:44,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 12:21:44,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:44,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:44,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:21:44,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:21:44,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-29 12:21:44,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:44,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:21:44,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:44,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:44,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:44,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:21:44,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:44,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 12:21:44,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:44,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:44,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:21:44,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:21:44,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:21:44,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:44,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-29 12:21:44,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:44,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:44,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:44,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 12:21:44,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:44,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:21:44,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:44,661 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:44,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:21:44,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:21:44,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:21:44,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:44,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-29 12:21:44,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:44,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:44,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:44,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 12:21:44,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:44,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 12:21:44,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:44,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:44,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:21:44,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:21:44,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 12:21:44,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:44,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-29 12:21:44,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:44,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:44,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:44,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:21:44,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:44,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:21:44,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:44,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:44,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:21:44,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:21:44,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:21:44,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:44,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:21:44,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1670257780] [2020-10-29 12:21:44,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:21:44,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-29 12:21:44,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371683906] [2020-10-29 12:21:44,802 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 12:21:44,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:21:44,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 12:21:44,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-29 12:21:44,803 INFO L87 Difference]: Start difference. First operand 17126 states and 23782 transitions. Second operand 14 states. [2020-10-29 12:21:45,438 WARN L193 SmtUtils]: Spent 557.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 181 [2020-10-29 12:21:45,749 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-29 12:21:46,373 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-29 12:21:47,166 WARN L193 SmtUtils]: Spent 572.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 183 [2020-10-29 12:21:47,398 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2020-10-29 12:21:47,733 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2020-10-29 12:21:48,171 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 78 [2020-10-29 12:21:48,369 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 79 [2020-10-29 12:21:48,592 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 81 [2020-10-29 12:21:48,821 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 77 [2020-10-29 12:21:48,995 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 73 [2020-10-29 12:21:50,077 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2020-10-29 12:21:50,506 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2020-10-29 12:21:50,916 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 76 [2020-10-29 12:21:51,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:21:51,393 INFO L93 Difference]: Finished difference Result 22146 states and 30749 transitions. [2020-10-29 12:21:51,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 12:21:51,394 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 93 [2020-10-29 12:21:51,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:21:51,460 INFO L225 Difference]: With dead ends: 22146 [2020-10-29 12:21:51,460 INFO L226 Difference]: Without dead ends: 18438 [2020-10-29 12:21:51,474 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=232, Invalid=638, Unknown=0, NotChecked=0, Total=870 [2020-10-29 12:21:51,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18438 states. [2020-10-29 12:21:52,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18438 to 17321. [2020-10-29 12:21:52,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17321 states. [2020-10-29 12:21:53,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17321 states to 17321 states and 23964 transitions. [2020-10-29 12:21:53,004 INFO L78 Accepts]: Start accepts. Automaton has 17321 states and 23964 transitions. Word has length 93 [2020-10-29 12:21:53,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:21:53,004 INFO L481 AbstractCegarLoop]: Abstraction has 17321 states and 23964 transitions. [2020-10-29 12:21:53,004 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 12:21:53,004 INFO L276 IsEmpty]: Start isEmpty. Operand 17321 states and 23964 transitions. [2020-10-29 12:21:53,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-29 12:21:53,024 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:21:53,024 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] [2020-10-29 12:21:53,024 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 12:21:53,024 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:21:53,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:21:53,025 INFO L82 PathProgramCache]: Analyzing trace with hash -1843241391, now seen corresponding path program 1 times [2020-10-29 12:21:53,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:21:53,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1667178422] [2020-10-29 12:21:53,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:21:53,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:53,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:53,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:53,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:53,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:58,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:58,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-29 12:21:58,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 12:21:58,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-29 12:21:58,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:58,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:58,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 12:21:58,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-29 12:21:58,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 12:21:58,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:58,371 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 12:21:58,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:21:58,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:58,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:58,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:58,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:21:58,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:58,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:21:58,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:58,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:58,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:21:58,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:21:58,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:21:58,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:58,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:21:58,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:58,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:58,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:58,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 12:21:58,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:58,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 12:21:58,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:58,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:58,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:21:58,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:21:58,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 12:21:58,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:58,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:21:58,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:58,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:58,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:58,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:21:58,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:58,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 12:21:58,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:58,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:58,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:21:58,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:21:58,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:21:58,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:58,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-29 12:21:58,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:58,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:58,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:58,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 12:21:58,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:58,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 12:21:58,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:58,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:58,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:21:58,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:21:58,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 12:21:58,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:58,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-29 12:21:58,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:58,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:58,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:58,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 12:21:58,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:58,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 12:21:58,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:58,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:58,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:21:58,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:21:58,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 12:21:58,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:58,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-29 12:21:58,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:21:58,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:21:58,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:21:58,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:21:58,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:21:58,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:21:58,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:21:58,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:21:58,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:21:58,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-29 12:21:58,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 12:21:58,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:21:58,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:21:58,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1667178422] [2020-10-29 12:21:58,732 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:21:58,732 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-29 12:21:58,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697729549] [2020-10-29 12:21:58,733 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 12:21:58,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:21:58,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 12:21:58,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-29 12:21:58,734 INFO L87 Difference]: Start difference. First operand 17321 states and 23964 transitions. Second operand 13 states. [2020-10-29 12:21:59,064 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-29 12:21:59,641 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-29 12:21:59,931 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-29 12:22:02,577 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-29 12:22:02,872 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-29 12:22:03,550 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-29 12:22:11,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:22:11,387 INFO L93 Difference]: Finished difference Result 80660 states and 113381 transitions. [2020-10-29 12:22:11,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-29 12:22:11,388 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 93 [2020-10-29 12:22:11,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:22:11,677 INFO L225 Difference]: With dead ends: 80660 [2020-10-29 12:22:11,678 INFO L226 Difference]: Without dead ends: 68014 [2020-10-29 12:22:11,744 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 696 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=567, Invalid=1883, Unknown=0, NotChecked=0, Total=2450 [2020-10-29 12:22:11,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68014 states. [2020-10-29 12:22:17,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68014 to 65854. [2020-10-29 12:22:17,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65854 states. [2020-10-29 12:22:17,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65854 states to 65854 states and 91871 transitions. [2020-10-29 12:22:17,848 INFO L78 Accepts]: Start accepts. Automaton has 65854 states and 91871 transitions. Word has length 93 [2020-10-29 12:22:17,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:22:17,849 INFO L481 AbstractCegarLoop]: Abstraction has 65854 states and 91871 transitions. [2020-10-29 12:22:17,849 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 12:22:17,849 INFO L276 IsEmpty]: Start isEmpty. Operand 65854 states and 91871 transitions. [2020-10-29 12:22:17,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-29 12:22:17,876 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:22:17,877 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] [2020-10-29 12:22:17,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 12:22:17,877 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:22:17,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:22:17,877 INFO L82 PathProgramCache]: Analyzing trace with hash 1661412821, now seen corresponding path program 1 times [2020-10-29 12:22:17,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:22:17,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1175122338] [2020-10-29 12:22:17,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:22:17,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:17,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:18,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:18,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:18,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:19,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:22,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:22,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 12:22:22,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:22:22,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 12:22:22,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:22,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:22,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:22:22,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-29 12:22:22,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-29 12:22:22,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:23,202 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 12:22:23,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:22:23,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:23,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:23,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:23,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:22:23,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:22:23,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 12:22:23,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:23,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:23,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:22:23,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:22:23,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:22:23,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:23,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:22:23,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:23,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:23,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:23,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 12:22:23,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:22:23,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 12:22:23,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:23,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:23,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:22:23,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:22:23,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 12:22:23,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:23,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:22:23,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:23,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:23,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:23,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:22:23,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:22:23,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 12:22:23,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:23,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:23,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:22:23,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:22:23,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 12:22:23,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:23,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-29 12:22:23,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:23,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:23,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:23,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 12:22:23,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:22:23,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 12:22:23,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:23,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:23,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:22:23,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:22:23,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:22:23,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:23,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-29 12:22:23,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:23,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:23,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:23,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 12:22:23,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:22:23,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 12:22:23,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:23,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:23,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:22:23,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:22:23,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 12:22:23,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:23,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-29 12:22:23,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:23,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:23,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:23,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:22:23,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:22:23,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 12:22:23,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:23,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:23,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:22:23,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 12:22:23,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:22:23,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:23,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:22:23,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1175122338] [2020-10-29 12:22:23,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:22:23,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 12:22:23,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008006742] [2020-10-29 12:22:23,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 12:22:23,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:22:23,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 12:22:23,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-29 12:22:23,555 INFO L87 Difference]: Start difference. First operand 65854 states and 91871 transitions. Second operand 9 states. [2020-10-29 12:22:23,876 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-29 12:22:28,940 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-29 12:22:31,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 12:22:31,744 INFO L93 Difference]: Finished difference Result 108521 states and 153732 transitions. [2020-10-29 12:22:31,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 12:22:31,745 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 94 [2020-10-29 12:22:31,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 12:22:32,138 INFO L225 Difference]: With dead ends: 108521 [2020-10-29 12:22:32,138 INFO L226 Difference]: Without dead ends: 71885 [2020-10-29 12:22:32,206 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2020-10-29 12:22:32,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71885 states. [2020-10-29 12:22:37,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71885 to 65645. [2020-10-29 12:22:37,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65645 states. [2020-10-29 12:22:37,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65645 states to 65645 states and 90665 transitions. [2020-10-29 12:22:37,769 INFO L78 Accepts]: Start accepts. Automaton has 65645 states and 90665 transitions. Word has length 94 [2020-10-29 12:22:37,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 12:22:37,770 INFO L481 AbstractCegarLoop]: Abstraction has 65645 states and 90665 transitions. [2020-10-29 12:22:37,770 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 12:22:37,770 INFO L276 IsEmpty]: Start isEmpty. Operand 65645 states and 90665 transitions. [2020-10-29 12:22:37,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-29 12:22:37,792 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 12:22:37,792 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] [2020-10-29 12:22:37,792 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 12:22:37,792 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 12:22:37,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 12:22:37,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1369628071, now seen corresponding path program 1 times [2020-10-29 12:22:37,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 12:22:37,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1759863687] [2020-10-29 12:22:37,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 12:22:37,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:37,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:37,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:37,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:38,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:39,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:42,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:42,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 12:22:42,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 12:22:42,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-29 12:22:42,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:42,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:42,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 12:22:42,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-29 12:22:42,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-29 12:22:42,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:43,121 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-29 12:22:43,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 12:22:43,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:43,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:43,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:43,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 12:22:43,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:22:43,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 12:22:43,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:43,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:43,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 12:22:43,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:22:43,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 12:22:43,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:43,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 12:22:43,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:43,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:43,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:43,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 12:22:43,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:22:43,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 12:22:43,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:43,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:43,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 12:22:43,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:22:43,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 12:22:43,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:43,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 12:22:43,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:43,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:43,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:43,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 12:22:43,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:22:43,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:22:43,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:43,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:43,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 12:22:43,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 12:22:43,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 12:22:43,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:43,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-29 12:22:43,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:43,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:43,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:43,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 12:22:43,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:22:43,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 12:22:43,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:43,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:43,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:22:43,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:22:43,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:22:43,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:43,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-29 12:22:43,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:43,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:43,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:43,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-29 12:22:43,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:22:43,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 12:22:43,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:43,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:43,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:22:43,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 12:22:43,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 12:22:43,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:43,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-29 12:22:43,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 12:22:43,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 12:22:43,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 12:22:43,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 12:22:43,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 12:22:43,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 12:22:43,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 12:22:43,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 12:22:43,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 12:22:43,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-29 12:22:43,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 12:22:43,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 12:22:43,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 12:22:43,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1759863687] [2020-10-29 12:22:43,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 12:22:43,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-29 12:22:43,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374401150] [2020-10-29 12:22:43,384 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 12:22:43,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 12:22:43,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 12:22:43,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-29 12:22:43,385 INFO L87 Difference]: Start difference. First operand 65645 states and 90665 transitions. Second operand 10 states. [2020-10-29 12:22:43,705 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-29 12:22:44,247 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-29 12:22:46,983 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 178