/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-reduced/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 13:52:31,821 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 13:52:31,825 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 13:52:31,879 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 13:52:31,880 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 13:52:31,882 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 13:52:31,884 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 13:52:31,886 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 13:52:31,889 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 13:52:31,890 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 13:52:31,892 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 13:52:31,894 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 13:52:31,894 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 13:52:31,896 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 13:52:31,897 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 13:52:31,899 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 13:52:31,900 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 13:52:31,902 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 13:52:31,905 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 13:52:31,907 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 13:52:31,910 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 13:52:31,912 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 13:52:31,913 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 13:52:31,914 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 13:52:31,926 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 13:52:31,927 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 13:52:31,927 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 13:52:31,928 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 13:52:31,929 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 13:52:31,930 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 13:52:31,931 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 13:52:31,932 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 13:52:31,933 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 13:52:31,934 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 13:52:31,935 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 13:52:31,936 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 13:52:31,937 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 13:52:31,937 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 13:52:31,937 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 13:52:31,938 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 13:52:31,939 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 13:52:31,940 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 13:52:31,975 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 13:52:31,975 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 13:52:31,977 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 13:52:31,977 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 13:52:31,977 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 13:52:31,978 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 13:52:31,978 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 13:52:31,978 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 13:52:31,978 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 13:52:31,979 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 13:52:31,979 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 13:52:31,979 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 13:52:31,979 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 13:52:31,979 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 13:52:31,980 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 13:52:31,980 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 13:52:31,980 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 13:52:31,980 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 13:52:31,980 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 13:52:31,981 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 13:52:31,981 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 13:52:31,981 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:52:31,981 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 13:52:31,982 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 13:52:31,982 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 13:52:31,982 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 13:52:31,982 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 13:52:31,982 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 13:52:31,982 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 13:52:31,983 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 13:52:32,349 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 13:52:32,384 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 13:52:32,389 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 13:52:32,391 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 13:52:32,392 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 13:52:32,393 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-29 13:52:32,492 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c77bb8a1/341b5b37c08745739ed32b607e72a3f4/FLAGa46f4c0da [2020-10-29 13:52:33,179 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 13:52:33,179 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-29 13:52:33,202 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c77bb8a1/341b5b37c08745739ed32b607e72a3f4/FLAGa46f4c0da [2020-10-29 13:52:33,491 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3c77bb8a1/341b5b37c08745739ed32b607e72a3f4 [2020-10-29 13:52:33,498 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 13:52:33,509 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 13:52:33,513 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 13:52:33,513 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 13:52:33,518 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 13:52:33,520 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:52:33" (1/1) ... [2020-10-29 13:52:33,524 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5830f139 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:52:33, skipping insertion in model container [2020-10-29 13:52:33,525 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:52:33" (1/1) ... [2020-10-29 13:52:33,534 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 13:52:33,620 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 13:52:34,086 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:52:34,103 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 13:52:34,211 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:52:34,237 INFO L208 MainTranslator]: Completed translation [2020-10-29 13:52:34,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:52:34 WrapperNode [2020-10-29 13:52:34,238 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 13:52:34,241 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 13:52:34,242 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 13:52:34,242 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 13:52:34,265 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:52:34" (1/1) ... [2020-10-29 13:52:34,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:52:34" (1/1) ... [2020-10-29 13:52:34,281 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:52:34" (1/1) ... [2020-10-29 13:52:34,282 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:52:34" (1/1) ... [2020-10-29 13:52:34,304 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:52:34" (1/1) ... [2020-10-29 13:52:34,319 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:52:34" (1/1) ... [2020-10-29 13:52:34,324 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:52:34" (1/1) ... [2020-10-29 13:52:34,331 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 13:52:34,332 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 13:52:34,332 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 13:52:34,332 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 13:52:34,333 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:52:34" (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 13:52:34,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 13:52:34,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 13:52:34,416 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 13:52:34,416 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 13:52:34,416 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 13:52:34,417 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 13:52:34,417 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 13:52:34,417 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 13:52:34,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 13:52:34,418 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 13:52:34,419 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 13:52:34,420 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 13:52:34,420 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 13:52:34,420 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 13:52:34,420 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 13:52:34,421 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 13:52:34,422 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 13:52:34,422 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 13:52:34,422 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-29 13:52:34,422 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-29 13:52:34,423 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 13:52:34,423 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 13:52:34,424 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 13:52:34,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 13:52:34,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 13:52:34,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 13:52:34,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 13:52:34,430 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 13:52:34,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 13:52:35,566 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 13:52:35,567 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 13:52:35,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:52:35 BoogieIcfgContainer [2020-10-29 13:52:35,570 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 13:52:35,572 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 13:52:35,572 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 13:52:35,576 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 13:52:35,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 01:52:33" (1/3) ... [2020-10-29 13:52:35,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f097ffb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:52:35, skipping insertion in model container [2020-10-29 13:52:35,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:52:34" (2/3) ... [2020-10-29 13:52:35,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f097ffb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:52:35, skipping insertion in model container [2020-10-29 13:52:35,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:52:35" (3/3) ... [2020-10-29 13:52:35,579 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.v+nlh-reducer.c [2020-10-29 13:52:35,592 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 13:52:35,598 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 13:52:35,613 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 13:52:35,644 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 13:52:35,644 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 13:52:35,644 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 13:52:35,644 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 13:52:35,644 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 13:52:35,645 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 13:52:35,645 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 13:52:35,645 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 13:52:35,669 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states. [2020-10-29 13:52:35,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-29 13:52:35,681 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:52:35,682 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] [2020-10-29 13:52:35,683 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:52:35,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:52:35,689 INFO L82 PathProgramCache]: Analyzing trace with hash -768834611, now seen corresponding path program 1 times [2020-10-29 13:52:35,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:52:35,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [810936027] [2020-10-29 13:52:35,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:52:36,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:52:36,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:36,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:37,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:40,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:52:40,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-29 13:52:40,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 13:52:40,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4802 [2020-10-29 13:52:40,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:52:40,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:52:40,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:52:40,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 13:52:40,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-29 13:52:40,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 13:52:41,439 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 13:52:41,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:52:41,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:52:41,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:41,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:52:41,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:52:41,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:52:41,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 13:52:41,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:52:41,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:52:41,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:52:41,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:52:41,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:52:41,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:52:41,541 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 13:52:41,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [810936027] [2020-10-29 13:52:41,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:52:41,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 13:52:41,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054244019] [2020-10-29 13:52:41,550 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:52:41,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:52:41,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:52:41,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:52:41,569 INFO L87 Difference]: Start difference. First operand 225 states. Second operand 8 states. [2020-10-29 13:52:41,955 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-29 13:52:43,565 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-29 13:52:43,870 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:52:44,162 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-29 13:52:44,449 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-29 13:52:44,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:52:44,897 INFO L93 Difference]: Finished difference Result 889 states and 1431 transitions. [2020-10-29 13:52:44,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 13:52:44,900 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 86 [2020-10-29 13:52:44,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:52:44,925 INFO L225 Difference]: With dead ends: 889 [2020-10-29 13:52:44,925 INFO L226 Difference]: Without dead ends: 758 [2020-10-29 13:52:44,932 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2020-10-29 13:52:44,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2020-10-29 13:52:45,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 334. [2020-10-29 13:52:45,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 334 states. [2020-10-29 13:52:45,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 497 transitions. [2020-10-29 13:52:45,084 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 497 transitions. Word has length 86 [2020-10-29 13:52:45,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:52:45,087 INFO L481 AbstractCegarLoop]: Abstraction has 334 states and 497 transitions. [2020-10-29 13:52:45,087 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:52:45,088 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 497 transitions. [2020-10-29 13:52:45,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-29 13:52:45,098 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:52:45,099 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 13:52:45,099 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 13:52:45,099 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:52:45,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:52:45,100 INFO L82 PathProgramCache]: Analyzing trace with hash 1934687898, now seen corresponding path program 1 times [2020-10-29 13:52:45,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:52:45,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [866114323] [2020-10-29 13:52:45,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:52:45,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:52:45,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:45,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:46,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:52:46,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 13:52:46,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 13:52:46,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1316 [2020-10-29 13:52:46,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:52:46,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:52:46,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:52:46,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 13:52:46,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-29 13:52:46,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:52:46,854 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 13:52:46,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:52:46,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:52:46,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:46,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:52:46,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:52:46,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:52:46,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 13:52:46,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:52:46,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:52:46,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:52:46,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:52:46,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:52:46,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 13:52:46,977 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 13:52:46,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [866114323] [2020-10-29 13:52:46,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:52:46,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 13:52:46,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424336741] [2020-10-29 13:52:46,981 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:52:46,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:52:46,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:52:46,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:52:46,994 INFO L87 Difference]: Start difference. First operand 334 states and 497 transitions. Second operand 8 states. [2020-10-29 13:52:48,495 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 13:52:48,756 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-29 13:52:49,013 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:52:49,316 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-29 13:52:49,607 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-29 13:52:50,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:52:50,870 INFO L93 Difference]: Finished difference Result 1435 states and 2209 transitions. [2020-10-29 13:52:50,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 13:52:50,871 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 87 [2020-10-29 13:52:50,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:52:50,880 INFO L225 Difference]: With dead ends: 1435 [2020-10-29 13:52:50,880 INFO L226 Difference]: Without dead ends: 1186 [2020-10-29 13:52:50,884 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-29 13:52:50,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1186 states. [2020-10-29 13:52:50,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1186 to 1174. [2020-10-29 13:52:50,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1174 states. [2020-10-29 13:52:50,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1174 states to 1174 states and 1802 transitions. [2020-10-29 13:52:50,985 INFO L78 Accepts]: Start accepts. Automaton has 1174 states and 1802 transitions. Word has length 87 [2020-10-29 13:52:50,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:52:50,986 INFO L481 AbstractCegarLoop]: Abstraction has 1174 states and 1802 transitions. [2020-10-29 13:52:50,986 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:52:50,986 INFO L276 IsEmpty]: Start isEmpty. Operand 1174 states and 1802 transitions. [2020-10-29 13:52:50,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-29 13:52:50,989 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:52:50,990 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 13:52:50,990 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 13:52:50,990 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:52:50,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:52:50,991 INFO L82 PathProgramCache]: Analyzing trace with hash -1122968299, now seen corresponding path program 1 times [2020-10-29 13:52:50,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:52:50,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [879133363] [2020-10-29 13:52:50,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:52:51,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:52:51,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:51,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:51,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:52:51,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 13:52:51,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 13:52:51,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 784 [2020-10-29 13:52:51,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:52:51,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:52:51,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:52:51,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:52:51,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 13:52:51,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:52:52,143 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 13:52:52,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:52:52,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:52:52,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:52,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:52:52,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:52:52,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:52:52,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 13:52:52,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:52:52,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:52:52,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:52:52,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:52:52,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:52:52,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:52:52,225 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 13:52:52,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [879133363] [2020-10-29 13:52:52,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:52:52,227 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:52:52,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73452277] [2020-10-29 13:52:52,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:52:52,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:52:52,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:52:52,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:52:52,231 INFO L87 Difference]: Start difference. First operand 1174 states and 1802 transitions. Second operand 6 states. [2020-10-29 13:52:52,520 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-29 13:52:53,512 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 13:52:54,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:52:54,070 INFO L93 Difference]: Finished difference Result 3215 states and 4988 transitions. [2020-10-29 13:52:54,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:52:54,071 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 88 [2020-10-29 13:52:54,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:52:54,085 INFO L225 Difference]: With dead ends: 3215 [2020-10-29 13:52:54,085 INFO L226 Difference]: Without dead ends: 2088 [2020-10-29 13:52:54,090 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:52:54,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2088 states. [2020-10-29 13:52:54,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2088 to 2085. [2020-10-29 13:52:54,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2085 states. [2020-10-29 13:52:54,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2085 states to 2085 states and 3215 transitions. [2020-10-29 13:52:54,250 INFO L78 Accepts]: Start accepts. Automaton has 2085 states and 3215 transitions. Word has length 88 [2020-10-29 13:52:54,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:52:54,250 INFO L481 AbstractCegarLoop]: Abstraction has 2085 states and 3215 transitions. [2020-10-29 13:52:54,250 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:52:54,251 INFO L276 IsEmpty]: Start isEmpty. Operand 2085 states and 3215 transitions. [2020-10-29 13:52:54,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-29 13:52:54,255 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:52:54,258 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 13:52:54,259 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 13:52:54,259 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:52:54,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:52:54,260 INFO L82 PathProgramCache]: Analyzing trace with hash 1603694914, now seen corresponding path program 1 times [2020-10-29 13:52:54,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:52:54,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2085162959] [2020-10-29 13:52:54,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:52:54,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:52:54,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:54,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:55,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:52:55,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 13:52:55,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 13:52:55,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 771 [2020-10-29 13:52:55,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:52:55,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:52:55,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:52:55,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:52:55,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 13:52:55,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:52:55,390 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 13:52:55,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:52:55,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:52:55,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:55,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:52:55,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:52:55,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:52:55,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 13:52:55,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:52:55,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:52:55,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:52:55,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:52:55,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:52:55,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:52:55,461 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 13:52:55,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2085162959] [2020-10-29 13:52:55,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:52:55,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:52:55,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121189457] [2020-10-29 13:52:55,463 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:52:55,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:52:55,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:52:55,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:52:55,465 INFO L87 Difference]: Start difference. First operand 2085 states and 3215 transitions. Second operand 6 states. [2020-10-29 13:52:55,811 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-29 13:52:56,721 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 13:52:57,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:52:57,373 INFO L93 Difference]: Finished difference Result 5634 states and 8733 transitions. [2020-10-29 13:52:57,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:52:57,373 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 88 [2020-10-29 13:52:57,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:52:57,396 INFO L225 Difference]: With dead ends: 5634 [2020-10-29 13:52:57,396 INFO L226 Difference]: Without dead ends: 3665 [2020-10-29 13:52:57,402 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:52:57,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3665 states. [2020-10-29 13:52:57,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3665 to 3662. [2020-10-29 13:52:57,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3662 states. [2020-10-29 13:52:57,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3662 states to 3662 states and 5635 transitions. [2020-10-29 13:52:57,718 INFO L78 Accepts]: Start accepts. Automaton has 3662 states and 5635 transitions. Word has length 88 [2020-10-29 13:52:57,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:52:57,718 INFO L481 AbstractCegarLoop]: Abstraction has 3662 states and 5635 transitions. [2020-10-29 13:52:57,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:52:57,718 INFO L276 IsEmpty]: Start isEmpty. Operand 3662 states and 5635 transitions. [2020-10-29 13:52:57,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-29 13:52:57,724 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:52:57,725 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 13:52:57,725 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 13:52:57,725 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:52:57,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:52:57,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1483535697, now seen corresponding path program 1 times [2020-10-29 13:52:57,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:52:57,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1155062827] [2020-10-29 13:52:57,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:52:57,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:52:57,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:58,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:58,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:52:58,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 13:52:58,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 13:52:58,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 676 [2020-10-29 13:52:58,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:52:58,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:52:58,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:52:58,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:52:58,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 13:52:58,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:52:58,726 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 13:52:58,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:52:58,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:52:58,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:52:58,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:52:58,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:52:58,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:52:58,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 13:52:58,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:52:58,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:52:58,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:52:58,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:52:58,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:52:58,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:52:58,798 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 13:52:58,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1155062827] [2020-10-29 13:52:58,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:52:58,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:52:58,799 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489471956] [2020-10-29 13:52:58,800 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:52:58,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:52:58,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:52:58,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:52:58,801 INFO L87 Difference]: Start difference. First operand 3662 states and 5635 transitions. Second operand 6 states. [2020-10-29 13:52:59,106 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-29 13:52:59,957 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 13:53:00,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:53:00,852 INFO L93 Difference]: Finished difference Result 10277 states and 15886 transitions. [2020-10-29 13:53:00,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:53:00,853 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 88 [2020-10-29 13:53:00,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:53:00,891 INFO L225 Difference]: With dead ends: 10277 [2020-10-29 13:53:00,891 INFO L226 Difference]: Without dead ends: 6765 [2020-10-29 13:53:00,900 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:53:00,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6765 states. [2020-10-29 13:53:01,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6765 to 6762. [2020-10-29 13:53:01,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6762 states. [2020-10-29 13:53:01,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6762 states to 6762 states and 10394 transitions. [2020-10-29 13:53:01,468 INFO L78 Accepts]: Start accepts. Automaton has 6762 states and 10394 transitions. Word has length 88 [2020-10-29 13:53:01,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:53:01,473 INFO L481 AbstractCegarLoop]: Abstraction has 6762 states and 10394 transitions. [2020-10-29 13:53:01,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:53:01,473 INFO L276 IsEmpty]: Start isEmpty. Operand 6762 states and 10394 transitions. [2020-10-29 13:53:01,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-29 13:53:01,477 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:53:01,479 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 13:53:01,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 13:53:01,479 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:53:01,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:53:01,480 INFO L82 PathProgramCache]: Analyzing trace with hash 1420804403, now seen corresponding path program 1 times [2020-10-29 13:53:01,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:53:01,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [937867518] [2020-10-29 13:53:01,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:53:01,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:53:01,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:53:01,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:53:02,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:53:02,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 13:53:02,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 13:53:02,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 700 [2020-10-29 13:53:02,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:53:02,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:53:02,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:53:02,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:53:02,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 13:53:02,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:53:02,481 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 13:53:02,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:53:02,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:53:02,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:53:02,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:53:02,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:53:02,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:53:02,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 13:53:02,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:53:02,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:53:02,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:53:02,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:53:02,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:53:02,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:53:02,552 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 13:53:02,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [937867518] [2020-10-29 13:53:02,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:53:02,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:53:02,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606511214] [2020-10-29 13:53:02,556 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:53:02,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:53:02,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:53:02,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:53:02,557 INFO L87 Difference]: Start difference. First operand 6762 states and 10394 transitions. Second operand 6 states. [2020-10-29 13:53:02,819 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-29 13:53:03,855 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 13:53:04,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:53:04,907 INFO L93 Difference]: Finished difference Result 19699 states and 30293 transitions. [2020-10-29 13:53:04,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:53:04,908 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 88 [2020-10-29 13:53:04,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:53:04,978 INFO L225 Difference]: With dead ends: 19699 [2020-10-29 13:53:04,978 INFO L226 Difference]: Without dead ends: 13023 [2020-10-29 13:53:04,995 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:53:05,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13023 states. [2020-10-29 13:53:06,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13023 to 13020. [2020-10-29 13:53:06,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13020 states. [2020-10-29 13:53:06,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13020 states to 13020 states and 19886 transitions. [2020-10-29 13:53:06,152 INFO L78 Accepts]: Start accepts. Automaton has 13020 states and 19886 transitions. Word has length 88 [2020-10-29 13:53:06,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:53:06,152 INFO L481 AbstractCegarLoop]: Abstraction has 13020 states and 19886 transitions. [2020-10-29 13:53:06,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:53:06,153 INFO L276 IsEmpty]: Start isEmpty. Operand 13020 states and 19886 transitions. [2020-10-29 13:53:06,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-29 13:53:06,159 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:53:06,159 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 13:53:06,159 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 13:53:06,160 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:53:06,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:53:06,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1593877796, now seen corresponding path program 1 times [2020-10-29 13:53:06,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:53:06,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [291469022] [2020-10-29 13:53:06,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:53:06,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:53:06,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:53:06,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:53:06,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:53:06,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 13:53:06,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 13:53:06,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 601 [2020-10-29 13:53:06,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:53:06,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:53:06,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:53:06,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:53:06,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 13:53:06,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:53:07,137 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 13:53:07,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:53:07,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:53:07,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:53:07,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:53:07,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:53:07,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:53:07,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-29 13:53:07,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:53:07,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:53:07,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:53:07,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:53:07,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:53:07,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:53:07,241 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 13:53:07,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [291469022] [2020-10-29 13:53:07,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:53:07,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:53:07,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142964684] [2020-10-29 13:53:07,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:53:07,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:53:07,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:53:07,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:53:07,252 INFO L87 Difference]: Start difference. First operand 13020 states and 19886 transitions. Second operand 6 states. [2020-10-29 13:53:07,618 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-29 13:53:08,676 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 13:53:10,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:53:10,170 INFO L93 Difference]: Finished difference Result 38398 states and 58598 transitions. [2020-10-29 13:53:10,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:53:10,171 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 88 [2020-10-29 13:53:10,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:53:10,237 INFO L225 Difference]: With dead ends: 38398 [2020-10-29 13:53:10,238 INFO L226 Difference]: Without dead ends: 25441 [2020-10-29 13:53:10,267 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:53:10,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25441 states. [2020-10-29 13:53:12,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25441 to 25438. [2020-10-29 13:53:12,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25438 states. [2020-10-29 13:53:12,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25438 states to 25438 states and 38523 transitions. [2020-10-29 13:53:12,050 INFO L78 Accepts]: Start accepts. Automaton has 25438 states and 38523 transitions. Word has length 88 [2020-10-29 13:53:12,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:53:12,050 INFO L481 AbstractCegarLoop]: Abstraction has 25438 states and 38523 transitions. [2020-10-29 13:53:12,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:53:12,050 INFO L276 IsEmpty]: Start isEmpty. Operand 25438 states and 38523 transitions. [2020-10-29 13:53:12,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-29 13:53:12,060 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:53:12,060 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 13:53:12,060 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 13:53:12,060 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:53:12,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:53:12,061 INFO L82 PathProgramCache]: Analyzing trace with hash -1909954769, now seen corresponding path program 1 times [2020-10-29 13:53:12,061 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:53:12,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1266578199] [2020-10-29 13:53:12,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:53:12,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:53:12,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:53:12,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:53:12,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:53:15,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:53:15,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-29 13:53:15,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 13:53:15,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3287 [2020-10-29 13:53:15,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:53:15,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:53:15,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:53:15,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:53:15,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-29 13:53:15,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:53:15,825 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 13:53:15,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:53:15,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:53:15,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:53:15,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:53:15,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:53:15,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:53:15,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 13:53:15,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:53:15,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:53:15,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:53:15,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:53:15,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:53:15,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:53:15,880 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 13:53:15,881 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1266578199] [2020-10-29 13:53:15,881 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:53:15,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 13:53:15,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428755697] [2020-10-29 13:53:15,882 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:53:15,882 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:53:15,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:53:15,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:53:15,883 INFO L87 Difference]: Start difference. First operand 25438 states and 38523 transitions. Second operand 9 states. [2020-10-29 13:53:16,199 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 13:53:16,526 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2020-10-29 13:53:19,098 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:53:19,446 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-29 13:53:27,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:53:27,951 INFO L93 Difference]: Finished difference Result 145930 states and 220386 transitions. [2020-10-29 13:53:27,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 13:53:27,952 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 89 [2020-10-29 13:53:27,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:53:28,451 INFO L225 Difference]: With dead ends: 145930 [2020-10-29 13:53:28,452 INFO L226 Difference]: Without dead ends: 121141 [2020-10-29 13:53:28,516 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=143, Invalid=559, Unknown=0, NotChecked=0, Total=702 [2020-10-29 13:53:28,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121141 states. [2020-10-29 13:53:32,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121141 to 25520. [2020-10-29 13:53:32,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25520 states. [2020-10-29 13:53:32,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25520 states to 25520 states and 38612 transitions. [2020-10-29 13:53:32,516 INFO L78 Accepts]: Start accepts. Automaton has 25520 states and 38612 transitions. Word has length 89 [2020-10-29 13:53:32,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:53:32,517 INFO L481 AbstractCegarLoop]: Abstraction has 25520 states and 38612 transitions. [2020-10-29 13:53:32,517 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 13:53:32,517 INFO L276 IsEmpty]: Start isEmpty. Operand 25520 states and 38612 transitions. [2020-10-29 13:53:32,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-29 13:53:32,528 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:53:32,528 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 13:53:32,528 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 13:53:32,528 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:53:32,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:53:32,529 INFO L82 PathProgramCache]: Analyzing trace with hash -801680305, now seen corresponding path program 1 times [2020-10-29 13:53:32,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:53:32,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [418846309] [2020-10-29 13:53:32,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:53:32,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:53:32,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:53:32,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:53:32,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:53:34,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:53:34,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-29 13:53:34,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 13:53:34,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2130 [2020-10-29 13:53:34,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:53:34,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:53:34,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:53:34,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:53:34,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 13:53:34,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:53:35,202 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 13:53:35,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:53:35,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:53:35,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:53:35,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:53:35,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:53:35,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:53:35,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 13:53:35,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:53:35,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:53:35,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:53:35,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:53:35,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:53:35,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:53:35,259 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 13:53:35,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [418846309] [2020-10-29 13:53:35,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:53:35,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 13:53:35,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13921632] [2020-10-29 13:53:35,260 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:53:35,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:53:35,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:53:35,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:53:35,261 INFO L87 Difference]: Start difference. First operand 25520 states and 38612 transitions. Second operand 9 states. [2020-10-29 13:53:35,566 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 13:53:38,092 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:53:38,456 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-29 13:53:49,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:53:49,993 INFO L93 Difference]: Finished difference Result 116346 states and 175266 transitions. [2020-10-29 13:53:49,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-29 13:53:49,993 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 89 [2020-10-29 13:53:49,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:53:50,205 INFO L225 Difference]: With dead ends: 116346 [2020-10-29 13:53:50,205 INFO L226 Difference]: Without dead ends: 105495 [2020-10-29 13:53:50,244 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=150, Invalid=606, Unknown=0, NotChecked=0, Total=756 [2020-10-29 13:53:50,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105495 states. [2020-10-29 13:53:54,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105495 to 26011. [2020-10-29 13:53:54,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26011 states. [2020-10-29 13:53:54,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26011 states to 26011 states and 39317 transitions. [2020-10-29 13:53:54,220 INFO L78 Accepts]: Start accepts. Automaton has 26011 states and 39317 transitions. Word has length 89 [2020-10-29 13:53:54,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:53:54,220 INFO L481 AbstractCegarLoop]: Abstraction has 26011 states and 39317 transitions. [2020-10-29 13:53:54,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 13:53:54,221 INFO L276 IsEmpty]: Start isEmpty. Operand 26011 states and 39317 transitions. [2020-10-29 13:53:54,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-29 13:53:54,231 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:53:54,231 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 13:53:54,231 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 13:53:54,231 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:53:54,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:53:54,232 INFO L82 PathProgramCache]: Analyzing trace with hash -1977190225, now seen corresponding path program 1 times [2020-10-29 13:53:54,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:53:54,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [991837343] [2020-10-29 13:53:54,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:53:54,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:53:54,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:53:54,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:53:54,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:53:57,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:53:57,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-29 13:53:57,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 13:53:57,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2806 [2020-10-29 13:53:57,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:53:57,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:53:57,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:53:57,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:53:57,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-29 13:53:57,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:53:57,563 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 13:53:57,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:53:57,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:53:57,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:53:57,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:53:57,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:53:57,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:53:57,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 13:53:57,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:53:57,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:53:57,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:53:57,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:53:57,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:53:57,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:53:57,619 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 13:53:57,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [991837343] [2020-10-29 13:53:57,620 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:53:57,620 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 13:53:57,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891276601] [2020-10-29 13:53:57,621 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:53:57,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:53:57,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:53:57,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:53:57,622 INFO L87 Difference]: Start difference. First operand 26011 states and 39317 transitions. Second operand 9 states. [2020-10-29 13:53:57,944 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 13:54:00,954 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:54:01,372 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-29 13:54:14,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:54:14,616 INFO L93 Difference]: Finished difference Result 115322 states and 174132 transitions. [2020-10-29 13:54:14,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 13:54:14,617 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 89 [2020-10-29 13:54:14,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:54:14,778 INFO L225 Difference]: With dead ends: 115322 [2020-10-29 13:54:14,778 INFO L226 Difference]: Without dead ends: 109506 [2020-10-29 13:54:14,803 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=138, Invalid=512, Unknown=0, NotChecked=0, Total=650 [2020-10-29 13:54:14,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109506 states. [2020-10-29 13:54:18,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109506 to 26011. [2020-10-29 13:54:18,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26011 states. [2020-10-29 13:54:18,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26011 states to 26011 states and 39313 transitions. [2020-10-29 13:54:18,759 INFO L78 Accepts]: Start accepts. Automaton has 26011 states and 39313 transitions. Word has length 89 [2020-10-29 13:54:18,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:54:18,759 INFO L481 AbstractCegarLoop]: Abstraction has 26011 states and 39313 transitions. [2020-10-29 13:54:18,759 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 13:54:18,759 INFO L276 IsEmpty]: Start isEmpty. Operand 26011 states and 39313 transitions. [2020-10-29 13:54:18,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-29 13:54:18,769 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:54:18,769 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 13:54:18,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 13:54:18,769 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:54:18,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:54:18,770 INFO L82 PathProgramCache]: Analyzing trace with hash -1588072465, now seen corresponding path program 1 times [2020-10-29 13:54:18,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:54:18,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [537502019] [2020-10-29 13:54:18,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:54:18,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:54:18,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:54:18,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:54:19,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:54:21,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:54:21,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-29 13:54:21,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 13:54:21,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2508 [2020-10-29 13:54:21,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:54:21,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:54:21,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:54:21,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:54:21,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 13:54:21,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:54:21,777 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 13:54:21,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:54:21,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:54:21,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:54:21,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:54:21,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:54:21,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:54:21,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 13:54:21,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:54:21,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:54:21,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:54:21,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:54:21,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:54:21,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:54:21,822 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 13:54:21,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [537502019] [2020-10-29 13:54:21,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:54:21,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 13:54:21,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793752593] [2020-10-29 13:54:21,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:54:21,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:54:21,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:54:21,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:54:21,825 INFO L87 Difference]: Start difference. First operand 26011 states and 39313 transitions. Second operand 9 states. [2020-10-29 13:54:22,141 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 13:54:25,320 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:54:25,701 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-29 13:54:43,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:54:43,039 INFO L93 Difference]: Finished difference Result 141464 states and 213604 transitions. [2020-10-29 13:54:43,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 13:54:43,039 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 89 [2020-10-29 13:54:43,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:54:43,481 INFO L225 Difference]: With dead ends: 141464 [2020-10-29 13:54:43,481 INFO L226 Difference]: Without dead ends: 125560 [2020-10-29 13:54:43,525 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=143, Invalid=559, Unknown=0, NotChecked=0, Total=702 [2020-10-29 13:54:43,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125560 states. [2020-10-29 13:54:48,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125560 to 26525. [2020-10-29 13:54:48,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26525 states. [2020-10-29 13:54:48,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26525 states to 26525 states and 39987 transitions. [2020-10-29 13:54:48,739 INFO L78 Accepts]: Start accepts. Automaton has 26525 states and 39987 transitions. Word has length 89 [2020-10-29 13:54:48,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:54:48,739 INFO L481 AbstractCegarLoop]: Abstraction has 26525 states and 39987 transitions. [2020-10-29 13:54:48,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 13:54:48,739 INFO L276 IsEmpty]: Start isEmpty. Operand 26525 states and 39987 transitions. [2020-10-29 13:54:48,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-29 13:54:48,750 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:54:48,750 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 13:54:48,750 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 13:54:48,750 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:54:48,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:54:48,751 INFO L82 PathProgramCache]: Analyzing trace with hash -639612017, now seen corresponding path program 1 times [2020-10-29 13:54:48,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:54:48,751 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1470600592] [2020-10-29 13:54:48,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:54:48,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:54:48,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:54:48,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:54:48,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:54:50,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:54:50,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-29 13:54:50,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 13:54:50,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1846 [2020-10-29 13:54:50,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:54:50,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:54:50,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:54:50,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:54:50,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-29 13:54:50,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:54:51,055 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 13:54:51,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:54:51,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:54:51,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:54:51,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:54:51,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:54:51,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:54:51,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 13:54:51,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:54:51,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:54:51,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:54:51,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:54:51,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:54:51,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:54:51,099 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 13:54:51,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1470600592] [2020-10-29 13:54:51,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:54:51,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 13:54:51,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542615396] [2020-10-29 13:54:51,100 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:54:51,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:54:51,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:54:51,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:54:51,101 INFO L87 Difference]: Start difference. First operand 26525 states and 39987 transitions. Second operand 9 states. [2020-10-29 13:54:51,485 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 13:54:55,424 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:54:55,754 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-29 13:55:17,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:55:17,306 INFO L93 Difference]: Finished difference Result 146872 states and 221336 transitions. [2020-10-29 13:55:17,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 13:55:17,307 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 89 [2020-10-29 13:55:17,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:55:17,714 INFO L225 Difference]: With dead ends: 146872 [2020-10-29 13:55:17,715 INFO L226 Difference]: Without dead ends: 126139 [2020-10-29 13:55:17,752 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=143, Invalid=559, Unknown=0, NotChecked=0, Total=702 [2020-10-29 13:55:17,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126139 states. [2020-10-29 13:55:23,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126139 to 27133. [2020-10-29 13:55:23,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27133 states. [2020-10-29 13:55:23,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27133 states to 27133 states and 40748 transitions. [2020-10-29 13:55:23,816 INFO L78 Accepts]: Start accepts. Automaton has 27133 states and 40748 transitions. Word has length 89 [2020-10-29 13:55:23,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:55:23,817 INFO L481 AbstractCegarLoop]: Abstraction has 27133 states and 40748 transitions. [2020-10-29 13:55:23,817 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 13:55:23,817 INFO L276 IsEmpty]: Start isEmpty. Operand 27133 states and 40748 transitions. [2020-10-29 13:55:23,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-29 13:55:23,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:55:23,825 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] [2020-10-29 13:55:23,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 13:55:23,825 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:55:23,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:55:23,826 INFO L82 PathProgramCache]: Analyzing trace with hash -439179220, now seen corresponding path program 1 times [2020-10-29 13:55:23,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:55:23,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2039756653] [2020-10-29 13:55:23,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:55:23,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:55:23,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:23,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:55:23,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-29 13:55:23,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:55:23,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-29 13:55:23,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:55:23,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:55:23,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:55:23,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-29 13:55:23,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 13:55:23,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:55:24,276 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 13:55:24,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:55:24,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:55:24,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:24,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:55:24,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:55:24,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:55:24,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 13:55:24,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:55:24,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:55:24,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:55:24,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:55:24,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:55:24,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:55:24,312 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 13:55:24,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2039756653] [2020-10-29 13:55:24,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:55:24,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:55:24,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583647989] [2020-10-29 13:55:24,314 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:55:24,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:55:24,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:55:24,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:55:24,315 INFO L87 Difference]: Start difference. First operand 27133 states and 40748 transitions. Second operand 5 states. [2020-10-29 13:55:35,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:55:35,054 INFO L93 Difference]: Finished difference Result 52256 states and 78542 transitions. [2020-10-29 13:55:35,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 13:55:35,055 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 90 [2020-10-29 13:55:35,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:55:35,129 INFO L225 Difference]: With dead ends: 52256 [2020-10-29 13:55:35,129 INFO L226 Difference]: Without dead ends: 52253 [2020-10-29 13:55:35,140 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:55:35,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52253 states. [2020-10-29 13:55:40,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52253 to 27773. [2020-10-29 13:55:40,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27773 states. [2020-10-29 13:55:40,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27773 states to 27773 states and 41388 transitions. [2020-10-29 13:55:40,844 INFO L78 Accepts]: Start accepts. Automaton has 27773 states and 41388 transitions. Word has length 90 [2020-10-29 13:55:40,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:55:40,845 INFO L481 AbstractCegarLoop]: Abstraction has 27773 states and 41388 transitions. [2020-10-29 13:55:40,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:55:40,845 INFO L276 IsEmpty]: Start isEmpty. Operand 27773 states and 41388 transitions. [2020-10-29 13:55:40,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-29 13:55:40,858 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:55:40,859 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 13:55:40,859 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 13:55:40,859 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:55:40,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:55:40,860 INFO L82 PathProgramCache]: Analyzing trace with hash -747128268, now seen corresponding path program 1 times [2020-10-29 13:55:40,860 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:55:40,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1020647641] [2020-10-29 13:55:40,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:55:40,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:55:40,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:41,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:55:41,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-29 13:55:41,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:55:41,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-29 13:55:41,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:55:41,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:55:41,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 13:55:41,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 13:55:41,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 13:55:41,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:55:41,331 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 13:55:41,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:55:41,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:55:41,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:55:41,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:55:41,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:55:41,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:55:41,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 13:55:41,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:55:41,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:55:41,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:55:41,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:55:41,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:55:41,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:55:41,373 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 13:55:41,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1020647641] [2020-10-29 13:55:41,374 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:55:41,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:55:41,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628229669] [2020-10-29 13:55:41,374 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 13:55:41,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:55:41,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 13:55:41,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 13:55:41,375 INFO L87 Difference]: Start difference. First operand 27773 states and 41388 transitions. Second operand 5 states. [2020-10-29 13:55:41,684 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-29 13:55:43,624 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-29 13:55:53,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:55:53,517 INFO L93 Difference]: Finished difference Result 74803 states and 111680 transitions. [2020-10-29 13:55:53,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 13:55:53,518 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 91 [2020-10-29 13:55:53,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:55:53,593 INFO L225 Difference]: With dead ends: 74803 [2020-10-29 13:55:53,594 INFO L226 Difference]: Without dead ends: 49680 [2020-10-29 13:55:53,621 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 13:55:53,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49680 states. [2020-10-29 13:56:03,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49680 to 49677. [2020-10-29 13:56:03,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49677 states. [2020-10-29 13:56:03,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49677 states to 49677 states and 73580 transitions. [2020-10-29 13:56:03,833 INFO L78 Accepts]: Start accepts. Automaton has 49677 states and 73580 transitions. Word has length 91 [2020-10-29 13:56:03,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:56:03,833 INFO L481 AbstractCegarLoop]: Abstraction has 49677 states and 73580 transitions. [2020-10-29 13:56:03,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 13:56:03,833 INFO L276 IsEmpty]: Start isEmpty. Operand 49677 states and 73580 transitions. [2020-10-29 13:56:03,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-29 13:56:03,841 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:56:03,841 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 13:56:03,841 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 13:56:03,842 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:56:03,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:56:03,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1100179248, now seen corresponding path program 1 times [2020-10-29 13:56:03,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:56:03,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [412624114] [2020-10-29 13:56:03,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:56:03,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:56:03,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:03,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:04,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:06,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:56:06,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-29 13:56:06,321 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 13:56:06,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2452 [2020-10-29 13:56:06,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:56:06,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:56:06,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:56:06,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-29 13:56:06,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 13:56:06,322 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:56:06,642 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 13:56:06,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:56:06,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:56:06,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:56:06,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:56:06,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:56:06,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:56:06,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 13:56:06,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:56:06,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:56:06,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:56:06,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:56:06,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:56:06,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:56:06,684 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 13:56:06,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [412624114] [2020-10-29 13:56:06,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:56:06,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 13:56:06,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332041120] [2020-10-29 13:56:06,685 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:56:06,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:56:06,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:56:06,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:56:06,686 INFO L87 Difference]: Start difference. First operand 49677 states and 73580 transitions. Second operand 8 states. [2020-10-29 13:56:07,018 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-29 13:56:09,424 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:56:09,716 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-29 13:56:09,979 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 183