/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 18:21:21,753 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 18:21:21,756 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 18:21:21,794 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 18:21:21,795 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 18:21:21,797 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 18:21:21,798 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 18:21:21,801 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 18:21:21,803 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 18:21:21,804 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 18:21:21,806 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 18:21:21,807 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 18:21:21,808 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 18:21:21,809 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 18:21:21,811 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 18:21:21,812 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 18:21:21,814 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 18:21:21,815 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 18:21:21,828 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 18:21:21,830 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 18:21:21,832 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 18:21:21,834 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 18:21:21,835 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 18:21:21,837 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 18:21:21,840 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 18:21:21,840 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 18:21:21,841 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 18:21:21,842 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 18:21:21,843 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 18:21:21,844 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 18:21:21,846 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 18:21:21,847 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 18:21:21,848 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 18:21:21,850 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 18:21:21,855 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 18:21:21,856 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 18:21:21,857 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 18:21:21,857 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 18:21:21,857 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 18:21:21,859 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 18:21:21,861 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 18:21:21,863 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 18:21:21,901 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 18:21:21,901 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 18:21:21,903 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 18:21:21,904 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 18:21:21,904 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 18:21:21,905 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 18:21:21,905 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 18:21:21,905 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 18:21:21,905 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 18:21:21,906 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 18:21:21,907 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 18:21:21,907 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 18:21:21,907 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 18:21:21,907 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 18:21:21,908 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 18:21:21,908 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 18:21:21,908 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 18:21:21,909 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 18:21:21,909 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 18:21:21,909 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 18:21:21,909 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 18:21:21,909 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 18:21:21,910 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 18:21:21,910 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 18:21:21,911 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 18:21:21,911 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 18:21:21,911 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 18:21:21,911 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 18:21:21,911 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 18:21:21,912 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 18:21:22,369 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 18:21:22,412 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 18:21:22,415 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 18:21:22,417 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 18:21:22,417 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 18:21:22,418 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-28 18:21:22,512 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8c12fb759/23211d8939894a9a81de9c0859f31acd/FLAG07b1dc51a [2020-10-28 18:21:23,317 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 18:21:23,318 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-28 18:21:23,343 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8c12fb759/23211d8939894a9a81de9c0859f31acd/FLAG07b1dc51a [2020-10-28 18:21:23,580 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8c12fb759/23211d8939894a9a81de9c0859f31acd [2020-10-28 18:21:23,583 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 18:21:23,589 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 18:21:23,591 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 18:21:23,591 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 18:21:23,595 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 18:21:23,596 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 06:21:23" (1/1) ... [2020-10-28 18:21:23,599 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f671c38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:21:23, skipping insertion in model container [2020-10-28 18:21:23,599 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 06:21:23" (1/1) ... [2020-10-28 18:21:23,613 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 18:21:23,704 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 18:21:24,095 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 18:21:24,134 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 18:21:24,290 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 18:21:24,328 INFO L208 MainTranslator]: Completed translation [2020-10-28 18:21:24,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:21:24 WrapperNode [2020-10-28 18:21:24,329 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 18:21:24,330 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 18:21:24,330 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 18:21:24,330 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 18:21:24,344 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:21:24" (1/1) ... [2020-10-28 18:21:24,344 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:21:24" (1/1) ... [2020-10-28 18:21:24,363 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:21:24" (1/1) ... [2020-10-28 18:21:24,363 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:21:24" (1/1) ... [2020-10-28 18:21:24,397 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:21:24" (1/1) ... [2020-10-28 18:21:24,419 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:21:24" (1/1) ... [2020-10-28 18:21:24,426 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:21:24" (1/1) ... [2020-10-28 18:21:24,434 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 18:21:24,436 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 18:21:24,436 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 18:21:24,436 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 18:21:24,437 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:21:24" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 18:21:24,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 18:21:24,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 18:21:24,530 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 18:21:24,530 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 18:21:24,530 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 18:21:24,531 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 18:21:24,532 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 18:21:24,532 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 18:21:24,532 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 18:21:24,532 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 18:21:24,534 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 18:21:24,534 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 18:21:24,534 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 18:21:24,535 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 18:21:24,535 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 18:21:24,536 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 18:21:24,536 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 18:21:24,536 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 18:21:24,536 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-28 18:21:24,537 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 18:21:24,537 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 18:21:24,537 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 18:21:24,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 18:21:24,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 18:21:24,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 18:21:24,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 18:21:24,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 18:21:24,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 18:21:26,656 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 18:21:26,657 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 18:21:26,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 06:21:26 BoogieIcfgContainer [2020-10-28 18:21:26,660 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 18:21:26,665 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 18:21:26,666 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 18:21:26,670 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 18:21:26,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 06:21:23" (1/3) ... [2020-10-28 18:21:26,671 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39aed204 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 06:21:26, skipping insertion in model container [2020-10-28 18:21:26,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:21:24" (2/3) ... [2020-10-28 18:21:26,672 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39aed204 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 06:21:26, skipping insertion in model container [2020-10-28 18:21:26,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 06:21:26" (3/3) ... [2020-10-28 18:21:26,674 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-28 18:21:26,686 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 18:21:26,692 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 18:21:26,705 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 18:21:26,736 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 18:21:26,736 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 18:21:26,736 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 18:21:26,736 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 18:21:26,736 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 18:21:26,736 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 18:21:26,737 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 18:21:26,737 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 18:21:26,763 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states. [2020-10-28 18:21:26,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-28 18:21:26,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:21:26,781 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:21:26,781 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:21:26,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:21:26,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1566272280, now seen corresponding path program 1 times [2020-10-28 18:21:26,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:21:26,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1056321287] [2020-10-28 18:21:26,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:21:27,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:21:27,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:27,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:28,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:29,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:29,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:32,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:21:32,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-28 18:21:32,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 18:21:32,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-28 18:21:32,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:21:32,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:21:32,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:21:32,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-28 18:21:32,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-28 18:21:32,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 18:21:33,670 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification that was a NOOP. DAG size: 280 [2020-10-28 18:21:33,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:21:33,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:21:33,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:33,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:21:33,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:21:33,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:21:33,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 18:21:33,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:21:33,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:21:33,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:21:33,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:21:33,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:21:33,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:21:33,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:21:33,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1056321287] [2020-10-28 18:21:33,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:21:33,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:21:33,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737093782] [2020-10-28 18:21:33,777 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:21:33,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:21:33,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:21:33,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:21:33,795 INFO L87 Difference]: Start difference. First operand 328 states. Second operand 4 states. [2020-10-28 18:21:35,106 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification that was a NOOP. DAG size: 282 [2020-10-28 18:21:37,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:21:37,889 INFO L93 Difference]: Finished difference Result 583 states and 1010 transitions. [2020-10-28 18:21:37,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:21:37,890 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 116 [2020-10-28 18:21:37,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:21:37,908 INFO L225 Difference]: With dead ends: 583 [2020-10-28 18:21:37,908 INFO L226 Difference]: Without dead ends: 440 [2020-10-28 18:21:37,913 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:21:37,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2020-10-28 18:21:38,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 437. [2020-10-28 18:21:38,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 437 states. [2020-10-28 18:21:38,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 727 transitions. [2020-10-28 18:21:38,007 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 727 transitions. Word has length 116 [2020-10-28 18:21:38,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:21:38,008 INFO L481 AbstractCegarLoop]: Abstraction has 437 states and 727 transitions. [2020-10-28 18:21:38,008 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:21:38,008 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 727 transitions. [2020-10-28 18:21:38,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-28 18:21:38,016 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:21:38,016 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:21:38,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 18:21:38,017 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:21:38,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:21:38,019 INFO L82 PathProgramCache]: Analyzing trace with hash 2097749728, now seen corresponding path program 1 times [2020-10-28 18:21:38,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:21:38,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1245020037] [2020-10-28 18:21:38,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:21:38,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:21:38,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:38,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:38,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:39,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:39,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:40,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:41,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:43,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:21:43,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 18:21:43,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 18:21:43,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-28 18:21:43,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:21:43,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:21:43,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:21:43,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:21:43,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-28 18:21:43,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-28 18:21:44,474 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 280 [2020-10-28 18:21:44,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:21:44,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:21:44,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:44,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:21:44,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:21:44,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:21:44,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 18:21:44,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:21:44,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:21:44,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:21:44,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:21:44,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:21:44,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:21:44,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:21:44,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1245020037] [2020-10-28 18:21:44,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:21:44,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:21:44,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203179711] [2020-10-28 18:21:44,621 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:21:44,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:21:44,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:21:44,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:21:44,622 INFO L87 Difference]: Start difference. First operand 437 states and 727 transitions. Second operand 5 states. [2020-10-28 18:21:49,071 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 286 [2020-10-28 18:21:49,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:21:49,252 INFO L93 Difference]: Finished difference Result 1247 states and 2074 transitions. [2020-10-28 18:21:49,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:21:49,257 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-28 18:21:49,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:21:49,265 INFO L225 Difference]: With dead ends: 1247 [2020-10-28 18:21:49,266 INFO L226 Difference]: Without dead ends: 845 [2020-10-28 18:21:49,270 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:21:49,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2020-10-28 18:21:49,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 842. [2020-10-28 18:21:49,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 842 states. [2020-10-28 18:21:49,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1398 transitions. [2020-10-28 18:21:49,393 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1398 transitions. Word has length 119 [2020-10-28 18:21:49,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:21:49,394 INFO L481 AbstractCegarLoop]: Abstraction has 842 states and 1398 transitions. [2020-10-28 18:21:49,394 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:21:49,394 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1398 transitions. [2020-10-28 18:21:49,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-28 18:21:49,404 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:21:49,404 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:21:49,405 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 18:21:49,405 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:21:49,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:21:49,410 INFO L82 PathProgramCache]: Analyzing trace with hash -1975387022, now seen corresponding path program 1 times [2020-10-28 18:21:49,411 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:21:49,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2116913684] [2020-10-28 18:21:49,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:21:49,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:21:49,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:49,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:49,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:49,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:50,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:53,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:54,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:54,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:54,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:21:54,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 18:21:54,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 18:21:54,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-10-28 18:21:54,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:21:54,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:21:54,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:21:54,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:21:54,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 18:21:54,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:21:55,710 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification that was a NOOP. DAG size: 280 [2020-10-28 18:21:55,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:21:55,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:21:55,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:21:55,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:21:55,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:21:55,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:21:55,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 18:21:55,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:21:55,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:21:55,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:21:55,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:21:55,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:21:55,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:21:55,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:21:55,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2116913684] [2020-10-28 18:21:55,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:21:55,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:21:55,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041800500] [2020-10-28 18:21:55,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:21:55,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:21:55,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:21:55,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:21:55,815 INFO L87 Difference]: Start difference. First operand 842 states and 1398 transitions. Second operand 5 states. [2020-10-28 18:21:59,742 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification that was a NOOP. DAG size: 286 [2020-10-28 18:21:59,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:21:59,898 INFO L93 Difference]: Finished difference Result 2402 states and 3979 transitions. [2020-10-28 18:21:59,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:21:59,900 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-28 18:21:59,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:21:59,914 INFO L225 Difference]: With dead ends: 2402 [2020-10-28 18:21:59,914 INFO L226 Difference]: Without dead ends: 1625 [2020-10-28 18:21:59,921 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:21:59,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1625 states. [2020-10-28 18:22:00,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1625 to 1622. [2020-10-28 18:22:00,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1622 states. [2020-10-28 18:22:00,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1622 states to 1622 states and 2675 transitions. [2020-10-28 18:22:00,081 INFO L78 Accepts]: Start accepts. Automaton has 1622 states and 2675 transitions. Word has length 119 [2020-10-28 18:22:00,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:22:00,082 INFO L481 AbstractCegarLoop]: Abstraction has 1622 states and 2675 transitions. [2020-10-28 18:22:00,082 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:22:00,082 INFO L276 IsEmpty]: Start isEmpty. Operand 1622 states and 2675 transitions. [2020-10-28 18:22:00,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-28 18:22:00,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:22:00,087 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:22:00,087 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 18:22:00,087 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:22:00,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:22:00,088 INFO L82 PathProgramCache]: Analyzing trace with hash -494074190, now seen corresponding path program 1 times [2020-10-28 18:22:00,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:22:00,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1087158927] [2020-10-28 18:22:00,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:22:00,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:22:00,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:00,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:00,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:00,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:00,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:00,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:05,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:22:05,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-28 18:22:05,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 18:22:05,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-28 18:22:05,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:22:05,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:22:05,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:22:05,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:22:05,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-28 18:22:05,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:22:06,453 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 280 [2020-10-28 18:22:06,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:22:06,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:22:06,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:06,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:22:06,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:22:06,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:22:06,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 18:22:06,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:22:06,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:22:06,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:22:06,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:22:06,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:22:06,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:22:06,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:22:06,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1087158927] [2020-10-28 18:22:06,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:22:06,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:22:06,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32893551] [2020-10-28 18:22:06,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:22:06,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:22:06,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:22:06,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:22:06,580 INFO L87 Difference]: Start difference. First operand 1622 states and 2675 transitions. Second operand 5 states. [2020-10-28 18:22:10,649 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 286 [2020-10-28 18:22:10,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:22:10,842 INFO L93 Difference]: Finished difference Result 4556 states and 7490 transitions. [2020-10-28 18:22:10,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:22:10,843 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-28 18:22:10,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:22:10,860 INFO L225 Difference]: With dead ends: 4556 [2020-10-28 18:22:10,860 INFO L226 Difference]: Without dead ends: 3161 [2020-10-28 18:22:10,864 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:22:10,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3161 states. [2020-10-28 18:22:11,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3161 to 3158. [2020-10-28 18:22:11,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3158 states. [2020-10-28 18:22:11,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3158 states to 3158 states and 5189 transitions. [2020-10-28 18:22:11,135 INFO L78 Accepts]: Start accepts. Automaton has 3158 states and 5189 transitions. Word has length 120 [2020-10-28 18:22:11,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:22:11,135 INFO L481 AbstractCegarLoop]: Abstraction has 3158 states and 5189 transitions. [2020-10-28 18:22:11,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:22:11,136 INFO L276 IsEmpty]: Start isEmpty. Operand 3158 states and 5189 transitions. [2020-10-28 18:22:11,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-28 18:22:11,143 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:22:11,143 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:22:11,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 18:22:11,144 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:22:11,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:22:11,144 INFO L82 PathProgramCache]: Analyzing trace with hash 496412900, now seen corresponding path program 1 times [2020-10-28 18:22:11,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:22:11,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1316559994] [2020-10-28 18:22:11,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:22:11,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:22:11,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:11,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:11,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:11,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:11,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:14,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:14,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:15,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:16,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:22:16,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-28 18:22:16,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 18:22:16,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-28 18:22:16,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:22:16,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:22:16,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:22:16,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:22:16,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-28 18:22:16,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:22:17,366 WARN L193 SmtUtils]: Spent 987.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2020-10-28 18:22:17,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:22:17,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:22:17,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:17,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:22:17,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:22:17,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:22:17,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 18:22:17,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:22:17,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:22:17,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:22:17,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:22:17,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:22:17,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:22:17,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:22:17,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1316559994] [2020-10-28 18:22:17,456 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:22:17,456 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:22:17,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938296588] [2020-10-28 18:22:17,457 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:22:17,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:22:17,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:22:17,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:22:17,458 INFO L87 Difference]: Start difference. First operand 3158 states and 5189 transitions. Second operand 5 states. [2020-10-28 18:22:21,789 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 286 [2020-10-28 18:22:22,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:22:22,010 INFO L93 Difference]: Finished difference Result 9154 states and 15022 transitions. [2020-10-28 18:22:22,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:22:22,021 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-28 18:22:22,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:22:22,055 INFO L225 Difference]: With dead ends: 9154 [2020-10-28 18:22:22,055 INFO L226 Difference]: Without dead ends: 6135 [2020-10-28 18:22:22,064 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:22:22,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6135 states. [2020-10-28 18:22:22,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6135 to 6132. [2020-10-28 18:22:22,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6132 states. [2020-10-28 18:22:22,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6132 states to 6132 states and 10024 transitions. [2020-10-28 18:22:22,631 INFO L78 Accepts]: Start accepts. Automaton has 6132 states and 10024 transitions. Word has length 121 [2020-10-28 18:22:22,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:22:22,631 INFO L481 AbstractCegarLoop]: Abstraction has 6132 states and 10024 transitions. [2020-10-28 18:22:22,631 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:22:22,631 INFO L276 IsEmpty]: Start isEmpty. Operand 6132 states and 10024 transitions. [2020-10-28 18:22:22,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-28 18:22:22,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:22:22,643 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:22:22,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 18:22:22,644 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:22:22,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:22:22,645 INFO L82 PathProgramCache]: Analyzing trace with hash -462609259, now seen corresponding path program 1 times [2020-10-28 18:22:22,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:22:22,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [859660297] [2020-10-28 18:22:22,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:22:22,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:22:22,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:22,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:22,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:23,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:23,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:23,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:23,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:27,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:22:27,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-28 18:22:27,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 18:22:27,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-28 18:22:27,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:22:27,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:22:27,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:22:27,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:22:27,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-28 18:22:27,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:22:28,941 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 280 [2020-10-28 18:22:28,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:22:28,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:22:28,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:28,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:22:28,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:22:28,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:22:28,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 18:22:28,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:22:28,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:22:28,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:22:28,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:22:28,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:22:28,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:22:29,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:22:29,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [859660297] [2020-10-28 18:22:29,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:22:29,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:22:29,020 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819464726] [2020-10-28 18:22:29,021 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:22:29,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:22:29,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:22:29,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:22:29,022 INFO L87 Difference]: Start difference. First operand 6132 states and 10024 transitions. Second operand 5 states. [2020-10-28 18:22:33,908 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification that was a NOOP. DAG size: 286 [2020-10-28 18:22:34,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:22:34,253 INFO L93 Difference]: Finished difference Result 17464 states and 28462 transitions. [2020-10-28 18:22:34,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:22:34,254 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-28 18:22:34,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:22:34,318 INFO L225 Difference]: With dead ends: 17464 [2020-10-28 18:22:34,319 INFO L226 Difference]: Without dead ends: 11828 [2020-10-28 18:22:34,335 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:22:34,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11828 states. [2020-10-28 18:22:35,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11828 to 11825. [2020-10-28 18:22:35,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11825 states. [2020-10-28 18:22:35,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11825 states to 11825 states and 19145 transitions. [2020-10-28 18:22:35,507 INFO L78 Accepts]: Start accepts. Automaton has 11825 states and 19145 transitions. Word has length 121 [2020-10-28 18:22:35,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:22:35,508 INFO L481 AbstractCegarLoop]: Abstraction has 11825 states and 19145 transitions. [2020-10-28 18:22:35,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:22:35,508 INFO L276 IsEmpty]: Start isEmpty. Operand 11825 states and 19145 transitions. [2020-10-28 18:22:35,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-28 18:22:35,531 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:22:35,531 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:22:35,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 18:22:35,532 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:22:35,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:22:35,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1188955356, now seen corresponding path program 1 times [2020-10-28 18:22:35,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:22:35,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1908038771] [2020-10-28 18:22:35,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:22:35,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:22:35,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:35,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:35,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:35,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:35,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:39,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:39,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:39,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:40,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:40,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:22:40,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 18:22:40,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 18:22:40,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5072 [2020-10-28 18:22:40,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:22:40,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:22:40,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:22:40,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-28 18:22:40,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-28 18:22:40,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:22:41,840 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 280 [2020-10-28 18:22:41,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:22:41,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:22:41,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:41,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:22:41,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:22:41,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:22:41,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 18:22:41,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:22:41,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:22:41,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:22:41,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:22:41,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:22:41,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:22:41,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:22:41,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1908038771] [2020-10-28 18:22:41,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:22:41,912 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:22:41,912 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622742270] [2020-10-28 18:22:41,912 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:22:41,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:22:41,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:22:41,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:22:41,913 INFO L87 Difference]: Start difference. First operand 11825 states and 19145 transitions. Second operand 4 states. [2020-10-28 18:22:43,062 WARN L193 SmtUtils]: Spent 1.08 s on a formula simplification that was a NOOP. DAG size: 282 [2020-10-28 18:22:46,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:22:46,884 INFO L93 Difference]: Finished difference Result 25207 states and 41613 transitions. [2020-10-28 18:22:46,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:22:46,885 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2020-10-28 18:22:46,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:22:46,936 INFO L225 Difference]: With dead ends: 25207 [2020-10-28 18:22:46,936 INFO L226 Difference]: Without dead ends: 18244 [2020-10-28 18:22:46,959 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:22:46,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18244 states. [2020-10-28 18:22:48,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18244 to 18241. [2020-10-28 18:22:48,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18241 states. [2020-10-28 18:22:48,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18241 states to 18241 states and 29817 transitions. [2020-10-28 18:22:48,487 INFO L78 Accepts]: Start accepts. Automaton has 18241 states and 29817 transitions. Word has length 122 [2020-10-28 18:22:48,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:22:48,487 INFO L481 AbstractCegarLoop]: Abstraction has 18241 states and 29817 transitions. [2020-10-28 18:22:48,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:22:48,488 INFO L276 IsEmpty]: Start isEmpty. Operand 18241 states and 29817 transitions. [2020-10-28 18:22:48,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-28 18:22:48,514 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:22:48,514 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:22:48,514 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 18:22:48,514 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:22:48,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:22:48,515 INFO L82 PathProgramCache]: Analyzing trace with hash -168441052, now seen corresponding path program 1 times [2020-10-28 18:22:48,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:22:48,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [537398651] [2020-10-28 18:22:48,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:22:48,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:22:48,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:48,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:48,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:49,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:49,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:49,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:49,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:50,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:53,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:22:53,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-28 18:22:53,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 18:22:53,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 18:22:53,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:22:53,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:22:53,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:22:53,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:22:53,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-28 18:22:53,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:22:54,821 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 280 [2020-10-28 18:22:54,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:22:54,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:22:54,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:22:54,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:22:54,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:22:54,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:22:54,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 18:22:54,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:22:54,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:22:54,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:22:54,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:22:54,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:22:54,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:22:54,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:22:54,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [537398651] [2020-10-28 18:22:54,906 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:22:54,906 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:22:54,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606436818] [2020-10-28 18:22:54,906 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:22:54,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:22:54,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:22:54,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:22:54,908 INFO L87 Difference]: Start difference. First operand 18241 states and 29817 transitions. Second operand 5 states. [2020-10-28 18:22:59,921 WARN L193 SmtUtils]: Spent 1.16 s on a formula simplification that was a NOOP. DAG size: 286 [2020-10-28 18:23:01,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:23:01,369 INFO L93 Difference]: Finished difference Result 53828 states and 87988 transitions. [2020-10-28 18:23:01,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:23:01,370 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-10-28 18:23:01,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:23:01,479 INFO L225 Difference]: With dead ends: 53828 [2020-10-28 18:23:01,480 INFO L226 Difference]: Without dead ends: 35731 [2020-10-28 18:23:01,523 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:23:01,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35731 states. [2020-10-28 18:23:04,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35731 to 35728. [2020-10-28 18:23:04,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35728 states. [2020-10-28 18:23:04,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35728 states to 35728 states and 58099 transitions. [2020-10-28 18:23:04,417 INFO L78 Accepts]: Start accepts. Automaton has 35728 states and 58099 transitions. Word has length 126 [2020-10-28 18:23:04,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:23:04,417 INFO L481 AbstractCegarLoop]: Abstraction has 35728 states and 58099 transitions. [2020-10-28 18:23:04,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:23:04,417 INFO L276 IsEmpty]: Start isEmpty. Operand 35728 states and 58099 transitions. [2020-10-28 18:23:04,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-28 18:23:04,447 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:23:04,448 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:23:04,448 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 18:23:04,448 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:23:04,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:23:04,449 INFO L82 PathProgramCache]: Analyzing trace with hash 2043028054, now seen corresponding path program 1 times [2020-10-28 18:23:04,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:23:04,449 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1995620630] [2020-10-28 18:23:04,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:23:04,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:23:04,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:04,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:04,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:04,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:04,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:04,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:05,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:09,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:23:09,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-28 18:23:09,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 18:23:09,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 18:23:09,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:23:09,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:23:09,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:23:09,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:23:09,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-28 18:23:09,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:23:10,704 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 280 [2020-10-28 18:23:10,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:23:10,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:23:10,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:10,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:23:10,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:23:10,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:23:10,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 18:23:10,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:23:10,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:23:10,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:23:10,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:23:10,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:23:10,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:23:10,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:23:10,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1995620630] [2020-10-28 18:23:10,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:23:10,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:23:10,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497984754] [2020-10-28 18:23:10,769 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:23:10,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:23:10,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:23:10,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:23:10,769 INFO L87 Difference]: Start difference. First operand 35728 states and 58099 transitions. Second operand 5 states. [2020-10-28 18:23:17,002 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 286 [2020-10-28 18:23:20,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:23:20,008 INFO L93 Difference]: Finished difference Result 104526 states and 169960 transitions. [2020-10-28 18:23:20,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:23:20,009 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-10-28 18:23:20,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:23:20,195 INFO L225 Difference]: With dead ends: 104526 [2020-10-28 18:23:20,196 INFO L226 Difference]: Without dead ends: 69625 [2020-10-28 18:23:20,268 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:23:20,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69625 states. [2020-10-28 18:23:25,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69625 to 69622. [2020-10-28 18:23:25,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69622 states. [2020-10-28 18:23:26,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69622 states to 69622 states and 112476 transitions. [2020-10-28 18:23:26,121 INFO L78 Accepts]: Start accepts. Automaton has 69622 states and 112476 transitions. Word has length 126 [2020-10-28 18:23:26,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:23:26,121 INFO L481 AbstractCegarLoop]: Abstraction has 69622 states and 112476 transitions. [2020-10-28 18:23:26,121 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:23:26,121 INFO L276 IsEmpty]: Start isEmpty. Operand 69622 states and 112476 transitions. [2020-10-28 18:23:26,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-28 18:23:26,169 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:23:26,170 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:23:26,170 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 18:23:26,170 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:23:26,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:23:26,171 INFO L82 PathProgramCache]: Analyzing trace with hash 1624588105, now seen corresponding path program 1 times [2020-10-28 18:23:26,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:23:26,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [445390601] [2020-10-28 18:23:26,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:23:26,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:23:26,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:26,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:26,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:26,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:26,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:27,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:27,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:27,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:31,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:23:31,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-28 18:23:31,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 18:23:31,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 18:23:31,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:23:31,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:23:31,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:23:31,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:23:31,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-28 18:23:31,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:23:32,425 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 280 [2020-10-28 18:23:32,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:23:32,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:23:32,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:32,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:23:32,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:23:32,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:23:32,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 18:23:32,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:23:32,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:23:32,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:23:32,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:23:32,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:23:32,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:23:32,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:23:32,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [445390601] [2020-10-28 18:23:32,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:23:32,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:23:32,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418363041] [2020-10-28 18:23:32,484 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:23:32,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:23:32,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:23:32,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:23:32,485 INFO L87 Difference]: Start difference. First operand 69622 states and 112476 transitions. Second operand 5 states. [2020-10-28 18:23:40,192 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification that was a NOOP. DAG size: 286 [2020-10-28 18:23:47,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:23:47,139 INFO L93 Difference]: Finished difference Result 205550 states and 332236 transitions. [2020-10-28 18:23:47,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:23:47,139 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-10-28 18:23:47,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:23:47,495 INFO L225 Difference]: With dead ends: 205550 [2020-10-28 18:23:47,496 INFO L226 Difference]: Without dead ends: 135947 [2020-10-28 18:23:47,588 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:23:47,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135947 states. [2020-10-28 18:23:58,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135947 to 135944. [2020-10-28 18:23:58,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135944 states. [2020-10-28 18:23:59,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135944 states to 135944 states and 218600 transitions. [2020-10-28 18:23:59,124 INFO L78 Accepts]: Start accepts. Automaton has 135944 states and 218600 transitions. Word has length 127 [2020-10-28 18:23:59,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:23:59,125 INFO L481 AbstractCegarLoop]: Abstraction has 135944 states and 218600 transitions. [2020-10-28 18:23:59,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:23:59,125 INFO L276 IsEmpty]: Start isEmpty. Operand 135944 states and 218600 transitions. [2020-10-28 18:23:59,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-28 18:23:59,494 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:23:59,495 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:23:59,495 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 18:23:59,495 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:23:59,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:23:59,496 INFO L82 PathProgramCache]: Analyzing trace with hash -1592496355, now seen corresponding path program 1 times [2020-10-28 18:23:59,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:23:59,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [406962235] [2020-10-28 18:23:59,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:23:59,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:23:59,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:59,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:59,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:23:59,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:24:00,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:24:00,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:24:00,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:24:01,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:24:02,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:24:04,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:24:04,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-28 18:24:04,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 18:24:04,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 18:24:04,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:24:04,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:24:04,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:24:04,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-28 18:24:04,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 18:24:04,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 18:24:05,648 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification that was a NOOP. DAG size: 280 [2020-10-28 18:24:05,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:24:05,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:24:05,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:24:05,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:24:05,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:24:05,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:24:05,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 18:24:05,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:24:05,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:24:05,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:24:05,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:24:05,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:24:05,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:24:05,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:24:05,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [406962235] [2020-10-28 18:24:05,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:24:05,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:24:05,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120610957] [2020-10-28 18:24:05,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:24:05,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:24:05,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:24:05,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:24:05,693 INFO L87 Difference]: Start difference. First operand 135944 states and 218600 transitions. Second operand 4 states. [2020-10-28 18:24:06,838 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 282 [2020-10-28 18:24:28,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:24:28,371 INFO L93 Difference]: Finished difference Result 327438 states and 535020 transitions. [2020-10-28 18:24:28,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:24:28,372 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 128 [2020-10-28 18:24:28,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:24:29,022 INFO L225 Difference]: With dead ends: 327438 [2020-10-28 18:24:29,022 INFO L226 Difference]: Without dead ends: 227595 [2020-10-28 18:24:29,154 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:24:29,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227595 states. [2020-10-28 18:24:49,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227595 to 227592. [2020-10-28 18:24:49,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227592 states. [2020-10-28 18:24:49,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227592 states to 227592 states and 368616 transitions. [2020-10-28 18:24:49,815 INFO L78 Accepts]: Start accepts. Automaton has 227592 states and 368616 transitions. Word has length 128 [2020-10-28 18:24:49,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:24:49,815 INFO L481 AbstractCegarLoop]: Abstraction has 227592 states and 368616 transitions. [2020-10-28 18:24:49,815 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:24:49,815 INFO L276 IsEmpty]: Start isEmpty. Operand 227592 states and 368616 transitions. [2020-10-28 18:24:49,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-28 18:24:49,893 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:24:49,893 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:24:49,893 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 18:24:49,894 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:24:49,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:24:49,894 INFO L82 PathProgramCache]: Analyzing trace with hash 474666546, now seen corresponding path program 1 times [2020-10-28 18:24:49,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:24:49,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1109535791] [2020-10-28 18:24:49,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:24:49,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:24:49,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:24:50,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:24:50,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:24:50,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:24:50,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:24:50,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:24:51,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:24:54,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:24:54,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-28 18:24:54,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 18:24:54,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 18:24:54,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:24:54,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:24:54,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:24:54,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:24:54,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-28 18:24:54,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:24:56,118 WARN L193 SmtUtils]: Spent 1.06 s on a formula simplification that was a NOOP. DAG size: 280 [2020-10-28 18:24:56,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:24:56,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:24:56,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:24:56,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:24:56,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:24:56,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:24:56,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 18:24:56,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:24:56,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:24:56,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:24:56,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:24:56,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:24:56,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:24:56,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:24:56,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1109535791] [2020-10-28 18:24:56,192 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:24:56,192 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:24:56,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634806443] [2020-10-28 18:24:56,193 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:24:56,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:24:56,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:24:56,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:24:56,194 INFO L87 Difference]: Start difference. First operand 227592 states and 368616 transitions. Second operand 5 states.