/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=SHALLOWEST --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.5.3.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 05:07:51,514 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 05:07:51,517 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 05:07:51,559 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 05:07:51,560 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 05:07:51,561 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 05:07:51,563 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 05:07:51,565 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 05:07:51,568 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 05:07:51,569 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 05:07:51,570 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 05:07:51,571 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 05:07:51,572 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 05:07:51,573 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 05:07:51,575 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 05:07:51,576 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 05:07:51,577 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 05:07:51,580 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 05:07:51,582 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 05:07:51,585 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 05:07:51,587 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 05:07:51,588 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 05:07:51,590 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 05:07:51,591 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 05:07:51,613 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 05:07:51,613 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 05:07:51,614 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 05:07:51,618 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 05:07:51,618 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 05:07:51,620 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 05:07:51,625 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 05:07:51,626 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 05:07:51,627 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 05:07:51,629 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 05:07:51,631 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 05:07:51,631 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 05:07:51,632 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 05:07:51,632 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 05:07:51,633 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 05:07:51,634 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 05:07:51,635 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 05:07:51,636 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 05:07:51,690 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 05:07:51,691 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 05:07:51,696 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 05:07:51,696 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 05:07:51,696 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 05:07:51,696 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 05:07:51,697 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 05:07:51,698 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 05:07:51,698 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 05:07:51,698 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 05:07:51,699 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 05:07:51,699 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 05:07:51,700 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 05:07:51,700 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 05:07:51,700 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 05:07:51,700 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 05:07:51,700 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 05:07:51,701 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 05:07:51,701 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 05:07:51,701 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 05:07:51,702 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 05:07:51,702 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:07:51,702 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 05:07:51,702 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 05:07:51,702 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 05:07:51,703 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 05:07:51,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 05:07:51,703 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 05:07:51,703 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 05:07:51,703 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 05:07:52,100 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 05:07:52,129 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 05:07:52,132 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 05:07:52,133 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 05:07:52,134 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 05:07:52,135 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.3.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-27 05:07:52,214 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3383af60c/1b509709521e40898342c74083caea45/FLAG99f4fa2e3 [2020-10-27 05:07:53,130 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 05:07:53,130 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.3.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-27 05:07:53,155 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3383af60c/1b509709521e40898342c74083caea45/FLAG99f4fa2e3 [2020-10-27 05:07:53,255 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3383af60c/1b509709521e40898342c74083caea45 [2020-10-27 05:07:53,258 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 05:07:53,265 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 05:07:53,267 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 05:07:53,268 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 05:07:53,272 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 05:07:53,273 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:07:53" (1/1) ... [2020-10-27 05:07:53,277 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25fe50fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:07:53, skipping insertion in model container [2020-10-27 05:07:53,277 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:07:53" (1/1) ... [2020-10-27 05:07:53,286 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 05:07:53,366 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 05:07:54,084 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:07:54,102 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 05:07:54,340 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:07:54,381 INFO L208 MainTranslator]: Completed translation [2020-10-27 05:07:54,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:07:54 WrapperNode [2020-10-27 05:07:54,383 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 05:07:54,385 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 05:07:54,385 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 05:07:54,385 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 05:07:54,400 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:07:54" (1/1) ... [2020-10-27 05:07:54,402 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:07:54" (1/1) ... [2020-10-27 05:07:54,452 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:07:54" (1/1) ... [2020-10-27 05:07:54,453 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:07:54" (1/1) ... [2020-10-27 05:07:54,507 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:07:54" (1/1) ... [2020-10-27 05:07:54,542 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:07:54" (1/1) ... [2020-10-27 05:07:54,552 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:07:54" (1/1) ... [2020-10-27 05:07:54,568 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 05:07:54,569 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 05:07:54,569 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 05:07:54,569 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 05:07:54,570 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:07:54" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:07:54,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 05:07:54,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 05:07:54,673 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 05:07:54,674 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 05:07:54,674 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 05:07:54,675 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 05:07:54,675 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 05:07:54,675 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 05:07:54,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 05:07:54,675 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 05:07:54,676 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 05:07:54,676 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 05:07:54,676 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 05:07:54,677 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 05:07:54,677 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 05:07:54,678 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 05:07:54,678 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 05:07:54,678 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 05:07:54,678 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 05:07:54,678 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-27 05:07:54,678 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 05:07:54,678 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 05:07:54,679 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 05:07:54,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 05:07:54,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 05:07:54,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 05:07:54,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 05:07:54,679 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 05:07:54,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 05:07:56,917 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 05:07:56,917 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 05:07:56,920 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:07:56 BoogieIcfgContainer [2020-10-27 05:07:56,921 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 05:07:56,923 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 05:07:56,923 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 05:07:56,926 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 05:07:56,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:07:53" (1/3) ... [2020-10-27 05:07:56,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64902492 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:07:56, skipping insertion in model container [2020-10-27 05:07:56,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:07:54" (2/3) ... [2020-10-27 05:07:56,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64902492 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:07:56, skipping insertion in model container [2020-10-27 05:07:56,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:07:56" (3/3) ... [2020-10-27 05:07:56,930 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.3.ufo.BOUNDED-10.pals.c.v+cfa-reducer.c [2020-10-27 05:07:56,943 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 05:07:56,949 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 05:07:56,963 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 05:07:56,998 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 05:07:56,998 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 05:07:56,998 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 05:07:56,998 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 05:07:56,998 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 05:07:56,998 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 05:07:56,998 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 05:07:56,999 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 05:07:57,034 INFO L276 IsEmpty]: Start isEmpty. Operand 745 states. [2020-10-27 05:07:57,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-10-27 05:07:57,067 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:07:57,068 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:07:57,069 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:07:57,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:07:57,076 INFO L82 PathProgramCache]: Analyzing trace with hash -425219858, now seen corresponding path program 1 times [2020-10-27 05:07:57,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:07:57,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1613921140] [2020-10-27 05:07:57,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:07:57,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:07:57,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:58,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:59,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:07:59,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:00,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:00,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:02,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:08:02,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-27 05:08:02,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 05:08:02,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5064 [2020-10-27 05:08:02,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:08:02,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:08:02,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-10-27 05:08:02,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-27 05:08:02,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 05:08:04,036 WARN L193 SmtUtils]: Spent 933.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2020-10-27 05:08:04,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:08:04,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:08:04,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:04,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:08:04,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:08:04,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:08:04,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 05:08:04,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:08:04,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:08:04,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:08:04,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:08:04,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:08:04,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:08:04,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1613921140] [2020-10-27 05:08:04,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:08:04,210 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 05:08:04,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092326681] [2020-10-27 05:08:04,217 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 05:08:04,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:08:04,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 05:08:04,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 05:08:04,237 INFO L87 Difference]: Start difference. First operand 745 states. Second operand 4 states. [2020-10-27 05:08:05,442 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 399 [2020-10-27 05:08:11,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:08:11,814 INFO L93 Difference]: Finished difference Result 1122 states and 1998 transitions. [2020-10-27 05:08:11,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 05:08:11,826 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 209 [2020-10-27 05:08:11,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:08:11,855 INFO L225 Difference]: With dead ends: 1122 [2020-10-27 05:08:11,856 INFO L226 Difference]: Without dead ends: 916 [2020-10-27 05:08:11,862 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:08:11,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2020-10-27 05:08:12,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 913. [2020-10-27 05:08:12,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 913 states. [2020-10-27 05:08:12,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 913 states to 913 states and 1585 transitions. [2020-10-27 05:08:12,011 INFO L78 Accepts]: Start accepts. Automaton has 913 states and 1585 transitions. Word has length 209 [2020-10-27 05:08:12,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:08:12,015 INFO L481 AbstractCegarLoop]: Abstraction has 913 states and 1585 transitions. [2020-10-27 05:08:12,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 05:08:12,016 INFO L276 IsEmpty]: Start isEmpty. Operand 913 states and 1585 transitions. [2020-10-27 05:08:12,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-27 05:08:12,034 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:08:12,034 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:08:12,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 05:08:12,035 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:08:12,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:08:12,035 INFO L82 PathProgramCache]: Analyzing trace with hash 658513969, now seen corresponding path program 1 times [2020-10-27 05:08:12,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:08:12,037 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [729326179] [2020-10-27 05:08:12,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:08:12,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:08:12,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:12,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:13,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:16,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:17,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:17,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:08:17,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-10-27 05:08:17,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 05:08:17,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5066 [2020-10-27 05:08:17,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:08:17,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:08:17,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:08:17,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 187 [2020-10-27 05:08:17,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-27 05:08:18,703 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-27 05:08:18,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:08:18,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:08:18,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:18,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:08:18,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:08:18,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:08:18,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 05:08:18,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:08:18,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:08:18,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:08:18,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:08:18,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:08:18,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:08:18,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [729326179] [2020-10-27 05:08:18,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:08:18,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:08:18,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108621906] [2020-10-27 05:08:18,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:08:18,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:08:18,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:08:18,924 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:08:18,924 INFO L87 Difference]: Start difference. First operand 913 states and 1585 transitions. Second operand 5 states. [2020-10-27 05:08:27,204 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-27 05:08:27,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:08:27,366 INFO L93 Difference]: Finished difference Result 2669 states and 4636 transitions. [2020-10-27 05:08:27,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:08:27,368 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 213 [2020-10-27 05:08:27,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:08:27,384 INFO L225 Difference]: With dead ends: 2669 [2020-10-27 05:08:27,384 INFO L226 Difference]: Without dead ends: 1805 [2020-10-27 05:08:27,392 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 [2020-10-27 05:08:27,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1805 states. [2020-10-27 05:08:27,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1805 to 1802. [2020-10-27 05:08:27,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1802 states. [2020-10-27 05:08:27,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1802 states to 1802 states and 3123 transitions. [2020-10-27 05:08:27,555 INFO L78 Accepts]: Start accepts. Automaton has 1802 states and 3123 transitions. Word has length 213 [2020-10-27 05:08:27,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:08:27,557 INFO L481 AbstractCegarLoop]: Abstraction has 1802 states and 3123 transitions. [2020-10-27 05:08:27,557 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:08:27,557 INFO L276 IsEmpty]: Start isEmpty. Operand 1802 states and 3123 transitions. [2020-10-27 05:08:27,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-27 05:08:27,568 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:08:27,569 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:08:27,569 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 05:08:27,569 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:08:27,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:08:27,573 INFO L82 PathProgramCache]: Analyzing trace with hash 515985860, now seen corresponding path program 1 times [2020-10-27 05:08:27,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:08:27,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1195917680] [2020-10-27 05:08:27,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:08:27,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:08:27,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:27,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:28,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:29,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:29,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:32,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:08:32,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-10-27 05:08:32,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 05:08:32,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5134 [2020-10-27 05:08:32,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:08:32,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:08:32,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:08:32,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-27 05:08:32,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:08:34,270 WARN L193 SmtUtils]: Spent 1.22 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-27 05:08:34,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:08:34,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:08:34,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:34,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:08:34,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:08:34,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:08:34,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 05:08:34,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:08:34,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:08:34,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:08:34,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:08:34,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:08:34,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:08:34,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1195917680] [2020-10-27 05:08:34,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:08:34,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:08:34,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037445986] [2020-10-27 05:08:34,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:08:34,624 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:08:34,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:08:34,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:08:34,625 INFO L87 Difference]: Start difference. First operand 1802 states and 3123 transitions. Second operand 5 states. [2020-10-27 05:08:42,985 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-27 05:08:43,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:08:43,141 INFO L93 Difference]: Finished difference Result 5100 states and 8810 transitions. [2020-10-27 05:08:43,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:08:43,147 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 213 [2020-10-27 05:08:43,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:08:43,167 INFO L225 Difference]: With dead ends: 5100 [2020-10-27 05:08:43,168 INFO L226 Difference]: Without dead ends: 3501 [2020-10-27 05:08:43,172 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 [2020-10-27 05:08:43,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3501 states. [2020-10-27 05:08:43,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3501 to 3498. [2020-10-27 05:08:43,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3498 states. [2020-10-27 05:08:43,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3498 states to 3498 states and 6038 transitions. [2020-10-27 05:08:43,446 INFO L78 Accepts]: Start accepts. Automaton has 3498 states and 6038 transitions. Word has length 213 [2020-10-27 05:08:43,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:08:43,447 INFO L481 AbstractCegarLoop]: Abstraction has 3498 states and 6038 transitions. [2020-10-27 05:08:43,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:08:43,447 INFO L276 IsEmpty]: Start isEmpty. Operand 3498 states and 6038 transitions. [2020-10-27 05:08:43,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-27 05:08:43,460 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:08:43,460 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:08:43,460 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 05:08:43,461 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:08:43,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:08:43,461 INFO L82 PathProgramCache]: Analyzing trace with hash -2103409943, now seen corresponding path program 1 times [2020-10-27 05:08:43,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:08:43,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1622376934] [2020-10-27 05:08:43,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:08:43,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:08:43,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:43,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:45,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:46,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:47,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:48,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:08:48,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-27 05:08:48,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 05:08:48,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-27 05:08:48,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:08:48,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 05:08:48,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:08:48,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 193 [2020-10-27 05:08:48,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:08:49,836 WARN L193 SmtUtils]: Spent 996.00 ms on a formula simplification that was a NOOP. DAG size: 397 [2020-10-27 05:08:49,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:08:49,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:08:49,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:49,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:08:49,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:08:49,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:08:49,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-27 05:08:49,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:08:49,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:08:49,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:08:49,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:08:49,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:08:50,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:08:50,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1622376934] [2020-10-27 05:08:50,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:08:50,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 05:08:50,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50668611] [2020-10-27 05:08:50,060 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 05:08:50,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:08:50,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 05:08:50,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-27 05:08:50,061 INFO L87 Difference]: Start difference. First operand 3498 states and 6038 transitions. Second operand 8 states. [2020-10-27 05:08:51,430 WARN L193 SmtUtils]: Spent 1.27 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-27 05:08:58,643 WARN L193 SmtUtils]: Spent 1.23 s on a formula simplification that was a NOOP. DAG size: 405 [2020-10-27 05:08:59,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:08:59,336 INFO L93 Difference]: Finished difference Result 6746 states and 11519 transitions. [2020-10-27 05:08:59,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 05:08:59,337 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 214 [2020-10-27 05:08:59,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:08:59,365 INFO L225 Difference]: With dead ends: 6746 [2020-10-27 05:08:59,365 INFO L226 Difference]: Without dead ends: 5329 [2020-10-27 05:08:59,370 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-10-27 05:08:59,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5329 states. [2020-10-27 05:08:59,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5329 to 3520. [2020-10-27 05:08:59,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3520 states. [2020-10-27 05:08:59,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3520 states to 3520 states and 6046 transitions. [2020-10-27 05:08:59,681 INFO L78 Accepts]: Start accepts. Automaton has 3520 states and 6046 transitions. Word has length 214 [2020-10-27 05:08:59,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:08:59,681 INFO L481 AbstractCegarLoop]: Abstraction has 3520 states and 6046 transitions. [2020-10-27 05:08:59,682 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 05:08:59,682 INFO L276 IsEmpty]: Start isEmpty. Operand 3520 states and 6046 transitions. [2020-10-27 05:08:59,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-27 05:08:59,693 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:08:59,693 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:08:59,694 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 05:08:59,694 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:08:59,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:08:59,694 INFO L82 PathProgramCache]: Analyzing trace with hash -594362447, now seen corresponding path program 1 times [2020-10-27 05:08:59,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:08:59,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1864490842] [2020-10-27 05:08:59,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:08:59,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:08:59,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:08:59,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:00,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:01,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:03,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:03,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:03,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:04,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:04,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:04,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:09:04,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-27 05:09:04,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 05:09:04,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5132 [2020-10-27 05:09:04,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:09:04,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:09:04,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:09:04,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-10-27 05:09:04,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:09:06,164 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-27 05:09:06,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:09:06,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:09:06,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:06,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:09:06,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:09:06,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:09:06,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 05:09:06,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:09:06,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:09:06,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:09:06,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:09:06,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:09:06,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:09:06,329 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1864490842] [2020-10-27 05:09:06,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:09:06,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:09:06,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214259282] [2020-10-27 05:09:06,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:09:06,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:09:06,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:09:06,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:09:06,331 INFO L87 Difference]: Start difference. First operand 3520 states and 6046 transitions. Second operand 5 states. [2020-10-27 05:09:14,334 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-27 05:09:14,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:09:14,521 INFO L93 Difference]: Finished difference Result 10228 states and 17540 transitions. [2020-10-27 05:09:14,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:09:14,521 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 214 [2020-10-27 05:09:14,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:09:14,554 INFO L225 Difference]: With dead ends: 10228 [2020-10-27 05:09:14,554 INFO L226 Difference]: Without dead ends: 6899 [2020-10-27 05:09:14,563 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 [2020-10-27 05:09:14,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6899 states. [2020-10-27 05:09:15,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6899 to 6896. [2020-10-27 05:09:15,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6896 states. [2020-10-27 05:09:15,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6896 states to 6896 states and 11790 transitions. [2020-10-27 05:09:15,319 INFO L78 Accepts]: Start accepts. Automaton has 6896 states and 11790 transitions. Word has length 214 [2020-10-27 05:09:15,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:09:15,320 INFO L481 AbstractCegarLoop]: Abstraction has 6896 states and 11790 transitions. [2020-10-27 05:09:15,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:09:15,320 INFO L276 IsEmpty]: Start isEmpty. Operand 6896 states and 11790 transitions. [2020-10-27 05:09:15,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-10-27 05:09:15,338 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:09:15,339 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:09:15,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 05:09:15,339 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:09:15,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:09:15,340 INFO L82 PathProgramCache]: Analyzing trace with hash 2116851958, now seen corresponding path program 1 times [2020-10-27 05:09:15,340 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:09:15,340 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1277822003] [2020-10-27 05:09:15,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:09:15,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:09:15,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:15,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:16,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:17,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:20,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:09:20,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-27 05:09:20,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 05:09:20,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-27 05:09:20,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:09:20,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 05:09:20,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:09:20,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 192 [2020-10-27 05:09:20,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:09:21,709 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-27 05:09:21,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:09:21,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:09:21,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:21,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:09:21,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:09:21,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:09:21,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-27 05:09:21,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:09:21,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:09:21,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:09:21,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:09:21,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:09:21,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:09:21,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1277822003] [2020-10-27 05:09:21,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:09:21,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 05:09:21,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812268613] [2020-10-27 05:09:21,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 05:09:21,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:09:21,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 05:09:21,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-27 05:09:21,864 INFO L87 Difference]: Start difference. First operand 6896 states and 11790 transitions. Second operand 8 states. [2020-10-27 05:09:23,076 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-27 05:09:31,672 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 405 [2020-10-27 05:09:32,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:09:32,736 INFO L93 Difference]: Finished difference Result 11095 states and 18815 transitions. [2020-10-27 05:09:32,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 05:09:32,737 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 215 [2020-10-27 05:09:32,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:09:32,780 INFO L225 Difference]: With dead ends: 11095 [2020-10-27 05:09:32,780 INFO L226 Difference]: Without dead ends: 10354 [2020-10-27 05:09:32,785 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-10-27 05:09:32,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10354 states. [2020-10-27 05:09:33,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10354 to 6896. [2020-10-27 05:09:33,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6896 states. [2020-10-27 05:09:33,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6896 states to 6896 states and 11786 transitions. [2020-10-27 05:09:33,310 INFO L78 Accepts]: Start accepts. Automaton has 6896 states and 11786 transitions. Word has length 215 [2020-10-27 05:09:33,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:09:33,311 INFO L481 AbstractCegarLoop]: Abstraction has 6896 states and 11786 transitions. [2020-10-27 05:09:33,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 05:09:33,311 INFO L276 IsEmpty]: Start isEmpty. Operand 6896 states and 11786 transitions. [2020-10-27 05:09:33,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-10-27 05:09:33,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:09:33,330 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:09:33,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 05:09:33,331 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:09:33,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:09:33,331 INFO L82 PathProgramCache]: Analyzing trace with hash -761916727, now seen corresponding path program 1 times [2020-10-27 05:09:33,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:09:33,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2118059161] [2020-10-27 05:09:33,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:09:33,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:09:33,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:33,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:34,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:34,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:35,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:35,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:35,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:35,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:38,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:09:38,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-27 05:09:38,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 05:09:38,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-27 05:09:38,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:09:38,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:09:38,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:09:38,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-27 05:09:38,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:09:39,741 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-27 05:09:39,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:09:39,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:09:39,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:39,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:09:39,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:09:39,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:09:39,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 05:09:39,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:09:39,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:09:39,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:09:39,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:09:39,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:09:39,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:09:39,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2118059161] [2020-10-27 05:09:39,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:09:39,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:09:39,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885482850] [2020-10-27 05:09:39,896 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:09:39,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:09:39,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:09:39,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:09:39,897 INFO L87 Difference]: Start difference. First operand 6896 states and 11786 transitions. Second operand 5 states. [2020-10-27 05:09:48,495 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-27 05:09:48,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:09:48,916 INFO L93 Difference]: Finished difference Result 20002 states and 34117 transitions. [2020-10-27 05:09:48,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:09:48,917 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 215 [2020-10-27 05:09:48,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:09:48,954 INFO L225 Difference]: With dead ends: 20002 [2020-10-27 05:09:48,954 INFO L226 Difference]: Without dead ends: 13431 [2020-10-27 05:09:48,966 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 [2020-10-27 05:09:48,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13431 states. [2020-10-27 05:09:50,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13431 to 13428. [2020-10-27 05:09:50,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13428 states. [2020-10-27 05:09:50,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13428 states to 13428 states and 22809 transitions. [2020-10-27 05:09:50,099 INFO L78 Accepts]: Start accepts. Automaton has 13428 states and 22809 transitions. Word has length 215 [2020-10-27 05:09:50,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:09:50,099 INFO L481 AbstractCegarLoop]: Abstraction has 13428 states and 22809 transitions. [2020-10-27 05:09:50,099 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:09:50,099 INFO L276 IsEmpty]: Start isEmpty. Operand 13428 states and 22809 transitions. [2020-10-27 05:09:50,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-10-27 05:09:50,125 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:09:50,126 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:09:50,126 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 05:09:50,126 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:09:50,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:09:50,127 INFO L82 PathProgramCache]: Analyzing trace with hash -1025545193, now seen corresponding path program 1 times [2020-10-27 05:09:50,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:09:50,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [567945427] [2020-10-27 05:09:50,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:09:50,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:09:50,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:50,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:50,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:51,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:51,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:51,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:52,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:52,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:52,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:55,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:09:55,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-27 05:09:55,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 05:09:55,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-27 05:09:55,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:09:55,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:09:55,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:09:55,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-27 05:09:55,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:09:56,579 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-27 05:09:56,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:09:56,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:09:56,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:09:56,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:09:56,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:09:56,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:09:56,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 05:09:56,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:09:56,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:09:56,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:09:56,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:09:56,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:09:56,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:09:56,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [567945427] [2020-10-27 05:09:56,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:09:56,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:09:56,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154876117] [2020-10-27 05:09:56,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:09:56,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:09:56,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:09:56,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:09:56,708 INFO L87 Difference]: Start difference. First operand 13428 states and 22809 transitions. Second operand 5 states. [2020-10-27 05:10:06,069 WARN L193 SmtUtils]: Spent 1.14 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-27 05:10:06,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:10:06,778 INFO L93 Difference]: Finished difference Result 39345 states and 66779 transitions. [2020-10-27 05:10:06,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:10:06,779 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 215 [2020-10-27 05:10:06,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:10:06,843 INFO L225 Difference]: With dead ends: 39345 [2020-10-27 05:10:06,844 INFO L226 Difference]: Without dead ends: 26638 [2020-10-27 05:10:06,869 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 [2020-10-27 05:10:06,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26638 states. [2020-10-27 05:10:09,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26638 to 26635. [2020-10-27 05:10:09,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26635 states. [2020-10-27 05:10:09,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26635 states to 26635 states and 45091 transitions. [2020-10-27 05:10:09,514 INFO L78 Accepts]: Start accepts. Automaton has 26635 states and 45091 transitions. Word has length 215 [2020-10-27 05:10:09,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:10:09,515 INFO L481 AbstractCegarLoop]: Abstraction has 26635 states and 45091 transitions. [2020-10-27 05:10:09,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:10:09,515 INFO L276 IsEmpty]: Start isEmpty. Operand 26635 states and 45091 transitions. [2020-10-27 05:10:09,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-10-27 05:10:09,559 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:10:09,559 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:10:09,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 05:10:09,559 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:10:09,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:10:09,560 INFO L82 PathProgramCache]: Analyzing trace with hash -2102140284, now seen corresponding path program 1 times [2020-10-27 05:10:09,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:10:09,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1680023480] [2020-10-27 05:10:09,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:10:09,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:10:09,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:10:09,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:10:10,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:10:10,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:10:11,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:10:14,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:10:14,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-27 05:10:14,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 05:10:14,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 05:10:14,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:10:14,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 05:10:14,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:10:14,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 197 [2020-10-27 05:10:14,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:10:15,939 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-27 05:10:15,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:10:15,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:10:15,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:10:15,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:10:15,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:10:15,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:10:15,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 05:10:15,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:10:15,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:10:15,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:10:15,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:10:15,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:10:16,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:10:16,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1680023480] [2020-10-27 05:10:16,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:10:16,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 05:10:16,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570910724] [2020-10-27 05:10:16,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 05:10:16,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:10:16,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 05:10:16,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-27 05:10:16,070 INFO L87 Difference]: Start difference. First operand 26635 states and 45091 transitions. Second operand 8 states. [2020-10-27 05:10:17,292 WARN L193 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-27 05:10:26,304 WARN L193 SmtUtils]: Spent 1.27 s on a formula simplification that was a NOOP. DAG size: 405 [2020-10-27 05:10:29,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:10:29,102 INFO L93 Difference]: Finished difference Result 43425 states and 73143 transitions. [2020-10-27 05:10:29,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 05:10:29,103 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 216 [2020-10-27 05:10:29,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:10:29,194 INFO L225 Difference]: With dead ends: 43425 [2020-10-27 05:10:29,194 INFO L226 Difference]: Without dead ends: 40574 [2020-10-27 05:10:29,211 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-10-27 05:10:29,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40574 states. [2020-10-27 05:10:31,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40574 to 26747. [2020-10-27 05:10:31,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26747 states. [2020-10-27 05:10:32,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26747 states to 26747 states and 45283 transitions. [2020-10-27 05:10:32,044 INFO L78 Accepts]: Start accepts. Automaton has 26747 states and 45283 transitions. Word has length 216 [2020-10-27 05:10:32,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:10:32,044 INFO L481 AbstractCegarLoop]: Abstraction has 26747 states and 45283 transitions. [2020-10-27 05:10:32,044 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 05:10:32,044 INFO L276 IsEmpty]: Start isEmpty. Operand 26747 states and 45283 transitions. [2020-10-27 05:10:32,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-10-27 05:10:32,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:10:32,075 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:10:32,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 05:10:32,075 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:10:32,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:10:32,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1996068918, now seen corresponding path program 1 times [2020-10-27 05:10:32,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:10:32,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1649651918] [2020-10-27 05:10:32,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:10:32,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:10:32,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:10:32,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:10:32,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:10:33,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:10:33,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:10:33,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:10:33,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:10:37,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:10:37,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-27 05:10:37,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 05:10:37,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5082 [2020-10-27 05:10:37,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:10:37,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:10:37,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:10:37,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 189 [2020-10-27 05:10:37,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:10:38,534 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-27 05:10:38,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:10:38,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:10:38,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:10:38,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:10:38,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:10:38,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:10:38,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 05:10:38,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:10:38,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:10:38,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:10:38,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:10:38,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:10:38,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:10:38,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1649651918] [2020-10-27 05:10:38,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:10:38,679 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:10:38,679 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130473079] [2020-10-27 05:10:38,680 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:10:38,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:10:38,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:10:38,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:10:38,680 INFO L87 Difference]: Start difference. First operand 26747 states and 45283 transitions. Second operand 5 states. [2020-10-27 05:10:51,674 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification that was a NOOP. DAG size: 403 [2020-10-27 05:10:53,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:10:53,121 INFO L93 Difference]: Finished difference Result 78297 states and 132381 transitions. [2020-10-27 05:10:53,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:10:53,122 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 216 [2020-10-27 05:10:53,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:10:53,231 INFO L225 Difference]: With dead ends: 78297 [2020-10-27 05:10:53,231 INFO L226 Difference]: Without dead ends: 52438 [2020-10-27 05:10:53,281 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 [2020-10-27 05:10:53,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52438 states. [2020-10-27 05:10:58,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52438 to 52435. [2020-10-27 05:10:58,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52435 states. [2020-10-27 05:10:59,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52435 states to 52435 states and 88377 transitions. [2020-10-27 05:10:59,019 INFO L78 Accepts]: Start accepts. Automaton has 52435 states and 88377 transitions. Word has length 216 [2020-10-27 05:10:59,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:10:59,020 INFO L481 AbstractCegarLoop]: Abstraction has 52435 states and 88377 transitions. [2020-10-27 05:10:59,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:10:59,020 INFO L276 IsEmpty]: Start isEmpty. Operand 52435 states and 88377 transitions. [2020-10-27 05:10:59,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-27 05:10:59,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:10:59,080 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:10:59,080 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 05:10:59,081 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:10:59,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:10:59,081 INFO L82 PathProgramCache]: Analyzing trace with hash 1892709538, now seen corresponding path program 1 times [2020-10-27 05:10:59,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:10:59,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [271559984] [2020-10-27 05:10:59,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:10:59,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:10:59,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:10:59,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:10:59,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:10:59,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:11:00,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:11:00,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:11:04,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:11:04,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-27 05:11:04,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 05:11:04,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-27 05:11:04,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:11:04,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:11:04,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 148 [2020-10-27 05:11:04,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-27 05:11:04,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:11:05,418 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification that was a NOOP. DAG size: 397 [2020-10-27 05:11:05,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:11:05,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:11:05,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:11:05,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:11:05,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:11:05,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:11:05,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 05:11:05,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:11:05,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:11:05,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:11:05,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:11:05,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:11:05,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:11:05,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [271559984] [2020-10-27 05:11:05,503 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:11:05,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 05:11:05,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830610644] [2020-10-27 05:11:05,504 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 05:11:05,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:11:05,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 05:11:05,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 05:11:05,505 INFO L87 Difference]: Start difference. First operand 52435 states and 88377 transitions. Second operand 4 states. [2020-10-27 05:11:06,764 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification that was a NOOP. DAG size: 399 [2020-10-27 05:11:21,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:11:21,819 INFO L93 Difference]: Finished difference Result 93977 states and 157053 transitions. [2020-10-27 05:11:21,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 05:11:21,820 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 217 [2020-10-27 05:11:21,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:11:21,938 INFO L225 Difference]: With dead ends: 93977 [2020-10-27 05:11:21,938 INFO L226 Difference]: Without dead ends: 72534 [2020-10-27 05:11:21,985 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 [2020-10-27 05:11:22,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72534 states.