/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 18:11:56,337 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 18:11:56,342 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 18:11:56,403 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 18:11:56,403 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 18:11:56,411 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 18:11:56,413 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 18:11:56,418 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 18:11:56,421 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 18:11:56,428 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 18:11:56,429 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 18:11:56,430 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 18:11:56,431 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 18:11:56,434 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 18:11:56,436 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 18:11:56,438 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 18:11:56,439 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 18:11:56,442 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 18:11:56,449 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 18:11:56,457 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 18:11:56,459 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 18:11:56,460 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 18:11:56,462 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 18:11:56,464 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 18:11:56,472 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 18:11:56,473 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 18:11:56,473 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 18:11:56,475 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 18:11:56,475 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 18:11:56,477 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 18:11:56,477 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 18:11:56,478 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 18:11:56,480 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 18:11:56,480 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 18:11:56,481 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 18:11:56,482 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 18:11:56,494 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 18:11:56,494 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 18:11:56,494 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 18:11:56,495 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 18:11:56,496 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 18:11:56,504 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 18:11:56,552 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 18:11:56,552 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 18:11:56,557 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 18:11:56,557 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 18:11:56,557 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 18:11:56,558 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 18:11:56,558 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 18:11:56,558 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 18:11:56,558 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 18:11:56,558 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 18:11:56,560 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 18:11:56,560 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 18:11:56,560 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 18:11:56,560 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 18:11:56,560 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 18:11:56,561 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 18:11:56,561 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 18:11:56,561 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 18:11:56,561 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 18:11:56,561 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 18:11:56,561 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 18:11:56,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 18:11:56,562 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 18:11:56,562 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 18:11:56,562 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 18:11:56,562 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 18:11:56,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 18:11:56,563 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 18:11:56,563 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 18:11:56,563 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 18:11:56,950 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 18:11:56,985 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 18:11:56,989 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 18:11:56,990 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 18:11:56,991 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 18:11:56,996 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-28 18:11:57,068 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7744d5bf8/6a286ac5b0f340e0a643486c4a67bd87/FLAG2b09d4c4e [2020-10-28 18:11:57,799 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 18:11:57,803 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-28 18:11:57,829 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7744d5bf8/6a286ac5b0f340e0a643486c4a67bd87/FLAG2b09d4c4e [2020-10-28 18:11:58,051 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7744d5bf8/6a286ac5b0f340e0a643486c4a67bd87 [2020-10-28 18:11:58,054 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 18:11:58,061 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 18:11:58,063 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 18:11:58,063 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 18:11:58,067 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 18:11:58,068 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 06:11:58" (1/1) ... [2020-10-28 18:11:58,071 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b1939c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:11:58, skipping insertion in model container [2020-10-28 18:11:58,072 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 06:11:58" (1/1) ... [2020-10-28 18:11:58,080 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 18:11:58,122 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 18:11:58,452 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 18:11:58,471 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 18:11:58,553 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 18:11:58,586 INFO L208 MainTranslator]: Completed translation [2020-10-28 18:11:58,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:11:58 WrapperNode [2020-10-28 18:11:58,587 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 18:11:58,589 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 18:11:58,589 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 18:11:58,589 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 18:11:58,608 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:11:58" (1/1) ... [2020-10-28 18:11:58,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:11:58" (1/1) ... [2020-10-28 18:11:58,646 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:11:58" (1/1) ... [2020-10-28 18:11:58,647 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:11:58" (1/1) ... [2020-10-28 18:11:58,687 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:11:58" (1/1) ... [2020-10-28 18:11:58,699 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:11:58" (1/1) ... [2020-10-28 18:11:58,704 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:11:58" (1/1) ... [2020-10-28 18:11:58,709 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 18:11:58,711 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 18:11:58,711 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 18:11:58,711 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 18:11:58,712 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:11:58" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 18:11:58,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 18:11:58,811 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 18:11:58,811 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 18:11:58,811 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 18:11:58,811 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 18:11:58,811 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 18:11:58,812 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 18:11:58,812 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 18:11:58,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 18:11:58,812 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 18:11:58,812 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-28 18:11:58,812 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 18:11:58,813 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 18:11:58,813 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 18:11:58,813 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 18:11:58,813 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 18:11:58,813 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 18:11:58,813 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 18:11:58,814 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 18:11:58,814 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 18:11:58,814 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 18:11:58,814 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 18:11:58,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 18:11:58,814 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 18:11:58,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 18:11:58,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 18:11:58,815 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 18:11:58,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 18:11:59,912 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 18:11:59,912 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 18:11:59,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 06:11:59 BoogieIcfgContainer [2020-10-28 18:11:59,915 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 18:11:59,916 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 18:11:59,917 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 18:11:59,920 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 18:11:59,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 06:11:58" (1/3) ... [2020-10-28 18:11:59,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@244761bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 06:11:59, skipping insertion in model container [2020-10-28 18:11:59,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:11:58" (2/3) ... [2020-10-28 18:11:59,922 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@244761bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 06:11:59, skipping insertion in model container [2020-10-28 18:11:59,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 06:11:59" (3/3) ... [2020-10-28 18:11:59,924 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2020-10-28 18:11:59,936 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 18:11:59,941 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 18:11:59,955 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 18:11:59,984 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 18:11:59,984 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 18:11:59,984 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 18:11:59,984 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 18:11:59,985 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 18:11:59,985 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 18:11:59,985 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 18:11:59,985 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 18:12:00,006 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states. [2020-10-28 18:12:00,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-28 18:12:00,015 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:12:00,016 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:12:00,017 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:12:00,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:12:00,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1542310197, now seen corresponding path program 1 times [2020-10-28 18:12:00,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:12:00,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1020137696] [2020-10-28 18:12:00,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:12:00,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:12:00,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:00,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:00,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:01,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:04,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:12:04,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-28 18:12:04,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 18:12:04,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3765 [2020-10-28 18:12:04,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:12:04,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:12:04,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:12:04,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-28 18:12:04,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 18:12:04,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 18:12:04,957 WARN L193 SmtUtils]: Spent 605.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 18:12:04,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:12:04,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:12:04,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:05,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:12:05,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:12:05,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:12:05,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 18:12:05,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:12:05,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:12:05,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:12:05,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:12:05,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:12:05,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 18:12:05,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:12:05,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1020137696] [2020-10-28 18:12:05,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:12:05,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:12:05,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665567885] [2020-10-28 18:12:05,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:12:05,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:12:05,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:12:05,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:12:05,091 INFO L87 Difference]: Start difference. First operand 149 states. Second operand 4 states. [2020-10-28 18:12:05,971 WARN L193 SmtUtils]: Spent 743.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:12:07,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:12:07,359 INFO L93 Difference]: Finished difference Result 318 states and 531 transitions. [2020-10-28 18:12:07,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:12:07,361 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2020-10-28 18:12:07,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:12:07,375 INFO L225 Difference]: With dead ends: 318 [2020-10-28 18:12:07,375 INFO L226 Difference]: Without dead ends: 219 [2020-10-28 18:12:07,380 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:12:07,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-10-28 18:12:07,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 215. [2020-10-28 18:12:07,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-10-28 18:12:07,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 340 transitions. [2020-10-28 18:12:07,457 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 340 transitions. Word has length 61 [2020-10-28 18:12:07,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:12:07,458 INFO L481 AbstractCegarLoop]: Abstraction has 215 states and 340 transitions. [2020-10-28 18:12:07,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:12:07,458 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 340 transitions. [2020-10-28 18:12:07,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-28 18:12:07,461 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:12:07,462 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] [2020-10-28 18:12:07,462 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 18:12:07,462 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:12:07,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:12:07,463 INFO L82 PathProgramCache]: Analyzing trace with hash -182129794, now seen corresponding path program 1 times [2020-10-28 18:12:07,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:12:07,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1223326080] [2020-10-28 18:12:07,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:12:07,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:12:07,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:07,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:07,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:08,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:09,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:12,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:12:12,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 18:12:12,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 18:12:12,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-28 18:12:12,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:12:12,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:12:12,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:12:12,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:12:12,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-28 18:12:12,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:12:13,273 WARN L193 SmtUtils]: Spent 531.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 18:12:13,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:12:13,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:12:13,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:13,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:12:13,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:12:13,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:12:13,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 18:12:13,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:12:13,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:12:13,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:12:13,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:12:13,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:12:13,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:12:13,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:12:13,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1223326080] [2020-10-28 18:12:13,342 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:12:13,342 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:12:13,343 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309340399] [2020-10-28 18:12:13,344 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:12:13,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:12:13,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:12:13,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:12:13,346 INFO L87 Difference]: Start difference. First operand 215 states and 340 transitions. Second operand 5 states. [2020-10-28 18:12:15,203 WARN L193 SmtUtils]: Spent 586.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 18:12:15,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:12:15,426 INFO L93 Difference]: Finished difference Result 567 states and 914 transitions. [2020-10-28 18:12:15,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:12:15,429 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2020-10-28 18:12:15,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:12:15,438 INFO L225 Difference]: With dead ends: 567 [2020-10-28 18:12:15,439 INFO L226 Difference]: Without dead ends: 410 [2020-10-28 18:12:15,445 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:12:15,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2020-10-28 18:12:15,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 407. [2020-10-28 18:12:15,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-10-28 18:12:15,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 644 transitions. [2020-10-28 18:12:15,545 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 644 transitions. Word has length 63 [2020-10-28 18:12:15,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:12:15,546 INFO L481 AbstractCegarLoop]: Abstraction has 407 states and 644 transitions. [2020-10-28 18:12:15,546 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:12:15,548 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 644 transitions. [2020-10-28 18:12:15,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-28 18:12:15,557 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:12:15,557 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] [2020-10-28 18:12:15,558 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 18:12:15,558 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:12:15,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:12:15,559 INFO L82 PathProgramCache]: Analyzing trace with hash 673165032, now seen corresponding path program 1 times [2020-10-28 18:12:15,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:12:15,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1389850004] [2020-10-28 18:12:15,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:12:15,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:12:15,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:15,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:15,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:15,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:16,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:16,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:19,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:12:19,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 18:12:19,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 18:12:19,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3965 [2020-10-28 18:12:19,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:12:19,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:12:19,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:12:19,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:12:19,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-28 18:12:19,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:12:20,222 WARN L193 SmtUtils]: Spent 542.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 18:12:20,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:12:20,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:12:20,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:20,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:12:20,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:12:20,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:12:20,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 18:12:20,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:12:20,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:12:20,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:12:20,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:12:20,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:12:20,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:12:20,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:12:20,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1389850004] [2020-10-28 18:12:20,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:12:20,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:12:20,269 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858896231] [2020-10-28 18:12:20,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:12:20,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:12:20,270 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:12:20,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:12:20,270 INFO L87 Difference]: Start difference. First operand 407 states and 644 transitions. Second operand 5 states. [2020-10-28 18:12:21,801 WARN L193 SmtUtils]: Spent 577.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 18:12:21,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:12:21,981 INFO L93 Difference]: Finished difference Result 1134 states and 1790 transitions. [2020-10-28 18:12:21,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:12:21,982 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-10-28 18:12:21,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:12:21,988 INFO L225 Difference]: With dead ends: 1134 [2020-10-28 18:12:21,989 INFO L226 Difference]: Without dead ends: 764 [2020-10-28 18:12:21,996 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:12:21,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2020-10-28 18:12:22,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 761. [2020-10-28 18:12:22,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 761 states. [2020-10-28 18:12:22,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 761 states to 761 states and 1192 transitions. [2020-10-28 18:12:22,088 INFO L78 Accepts]: Start accepts. Automaton has 761 states and 1192 transitions. Word has length 64 [2020-10-28 18:12:22,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:12:22,090 INFO L481 AbstractCegarLoop]: Abstraction has 761 states and 1192 transitions. [2020-10-28 18:12:22,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:12:22,091 INFO L276 IsEmpty]: Start isEmpty. Operand 761 states and 1192 transitions. [2020-10-28 18:12:22,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-28 18:12:22,105 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:12:22,108 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] [2020-10-28 18:12:22,108 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 18:12:22,108 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:12:22,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:12:22,112 INFO L82 PathProgramCache]: Analyzing trace with hash 59908075, now seen corresponding path program 1 times [2020-10-28 18:12:22,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:12:22,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [972822905] [2020-10-28 18:12:22,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:12:22,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:12:22,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:22,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:22,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:22,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:22,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:23,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:27,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:12:27,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 18:12:27,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 18:12:27,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 18:12:27,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:12:27,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:12:27,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:12:27,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:12:27,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-28 18:12:27,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:12:27,832 WARN L193 SmtUtils]: Spent 515.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 18:12:27,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:12:27,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:12:27,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:27,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:12:27,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:12:27,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:12:27,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 18:12:27,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:12:27,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:12:27,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:12:27,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:12:27,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:12:27,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:12:27,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:12:27,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [972822905] [2020-10-28 18:12:27,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:12:27,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:12:27,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711987144] [2020-10-28 18:12:27,878 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:12:27,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:12:27,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:12:27,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:12:27,879 INFO L87 Difference]: Start difference. First operand 761 states and 1192 transitions. Second operand 5 states. [2020-10-28 18:12:29,459 WARN L193 SmtUtils]: Spent 608.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 18:12:29,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:12:29,617 INFO L93 Difference]: Finished difference Result 2179 states and 3410 transitions. [2020-10-28 18:12:29,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:12:29,619 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2020-10-28 18:12:29,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:12:29,628 INFO L225 Difference]: With dead ends: 2179 [2020-10-28 18:12:29,628 INFO L226 Difference]: Without dead ends: 1447 [2020-10-28 18:12:29,631 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:12:29,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1447 states. [2020-10-28 18:12:29,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1447 to 1444. [2020-10-28 18:12:29,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1444 states. [2020-10-28 18:12:29,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1444 states to 1444 states and 2244 transitions. [2020-10-28 18:12:29,761 INFO L78 Accepts]: Start accepts. Automaton has 1444 states and 2244 transitions. Word has length 65 [2020-10-28 18:12:29,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:12:29,762 INFO L481 AbstractCegarLoop]: Abstraction has 1444 states and 2244 transitions. [2020-10-28 18:12:29,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:12:29,762 INFO L276 IsEmpty]: Start isEmpty. Operand 1444 states and 2244 transitions. [2020-10-28 18:12:29,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-28 18:12:29,766 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:12:29,767 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] [2020-10-28 18:12:29,767 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 18:12:29,767 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:12:29,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:12:29,768 INFO L82 PathProgramCache]: Analyzing trace with hash -1924082947, now seen corresponding path program 1 times [2020-10-28 18:12:29,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:12:29,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1448166194] [2020-10-28 18:12:29,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:12:29,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:12:29,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:29,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:29,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:29,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:31,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:34,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:12:34,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 18:12:34,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 18:12:34,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4423 [2020-10-28 18:12:34,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:12:34,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:12:34,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:12:34,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 18:12:34,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 18:12:34,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:12:35,027 WARN L193 SmtUtils]: Spent 736.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 18:12:35,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:12:35,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:12:35,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:35,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:12:35,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:12:35,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:12:35,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 18:12:35,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:12:35,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:12:35,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:12:35,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:12:35,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:12:35,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:12:35,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:12:35,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1448166194] [2020-10-28 18:12:35,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:12:35,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:12:35,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866545556] [2020-10-28 18:12:35,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:12:35,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:12:35,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:12:35,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:12:35,076 INFO L87 Difference]: Start difference. First operand 1444 states and 2244 transitions. Second operand 4 states. [2020-10-28 18:12:35,656 WARN L193 SmtUtils]: Spent 528.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:12:36,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:12:36,747 INFO L93 Difference]: Finished difference Result 3578 states and 5800 transitions. [2020-10-28 18:12:36,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:12:36,748 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 65 [2020-10-28 18:12:36,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:12:36,766 INFO L225 Difference]: With dead ends: 3578 [2020-10-28 18:12:36,766 INFO L226 Difference]: Without dead ends: 2459 [2020-10-28 18:12:36,770 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:12:36,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2459 states. [2020-10-28 18:12:36,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2459 to 2440. [2020-10-28 18:12:36,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2440 states. [2020-10-28 18:12:36,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2440 states to 2440 states and 3880 transitions. [2020-10-28 18:12:36,995 INFO L78 Accepts]: Start accepts. Automaton has 2440 states and 3880 transitions. Word has length 65 [2020-10-28 18:12:36,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:12:36,995 INFO L481 AbstractCegarLoop]: Abstraction has 2440 states and 3880 transitions. [2020-10-28 18:12:36,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:12:36,996 INFO L276 IsEmpty]: Start isEmpty. Operand 2440 states and 3880 transitions. [2020-10-28 18:12:37,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-28 18:12:37,000 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:12:37,000 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] [2020-10-28 18:12:37,000 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 18:12:37,000 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:12:37,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:12:37,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1786039620, now seen corresponding path program 1 times [2020-10-28 18:12:37,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:12:37,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [618841457] [2020-10-28 18:12:37,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:12:37,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:12:37,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:37,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:37,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:37,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:37,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:37,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:38,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:41,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:12:41,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 18:12:41,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 18:12:41,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4889 [2020-10-28 18:12:41,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:12:41,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:12:41,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:12:41,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:12:41,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-28 18:12:41,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:12:42,632 WARN L193 SmtUtils]: Spent 554.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 18:12:42,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:12:42,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:12:42,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:42,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:12:42,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:12:42,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:12:42,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 18:12:42,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:12:42,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:12:42,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:12:42,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:12:42,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:12:42,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:12:42,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:12:42,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [618841457] [2020-10-28 18:12:42,679 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:12:42,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:12:42,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294684388] [2020-10-28 18:12:42,680 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:12:42,680 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:12:42,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:12:42,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:12:42,682 INFO L87 Difference]: Start difference. First operand 2440 states and 3880 transitions. Second operand 5 states. [2020-10-28 18:12:44,442 WARN L193 SmtUtils]: Spent 563.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 18:12:44,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:12:44,907 INFO L93 Difference]: Finished difference Result 6946 states and 11131 transitions. [2020-10-28 18:12:44,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:12:44,909 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2020-10-28 18:12:44,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:12:44,935 INFO L225 Difference]: With dead ends: 6946 [2020-10-28 18:12:44,935 INFO L226 Difference]: Without dead ends: 4694 [2020-10-28 18:12:44,941 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:12:44,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4694 states. [2020-10-28 18:12:45,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4694 to 4691. [2020-10-28 18:12:45,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4691 states. [2020-10-28 18:12:45,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4691 states to 4691 states and 7423 transitions. [2020-10-28 18:12:45,413 INFO L78 Accepts]: Start accepts. Automaton has 4691 states and 7423 transitions. Word has length 68 [2020-10-28 18:12:45,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:12:45,413 INFO L481 AbstractCegarLoop]: Abstraction has 4691 states and 7423 transitions. [2020-10-28 18:12:45,413 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:12:45,414 INFO L276 IsEmpty]: Start isEmpty. Operand 4691 states and 7423 transitions. [2020-10-28 18:12:45,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-28 18:12:45,419 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:12:45,419 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] [2020-10-28 18:12:45,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 18:12:45,420 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:12:45,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:12:45,420 INFO L82 PathProgramCache]: Analyzing trace with hash 1733743574, now seen corresponding path program 1 times [2020-10-28 18:12:45,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:12:45,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1132521896] [2020-10-28 18:12:45,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:12:45,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:12:45,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:45,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:45,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:45,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:45,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:46,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:48,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:50,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:12:50,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 18:12:50,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 18:12:50,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 18:12:50,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:12:50,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:12:50,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:12:50,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:12:50,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-28 18:12:50,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:12:51,035 WARN L193 SmtUtils]: Spent 496.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 18:12:51,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:12:51,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:12:51,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:51,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:12:51,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:12:51,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:12:51,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 18:12:51,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:12:51,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:12:51,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:12:51,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:12:51,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:12:51,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:12:51,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:12:51,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1132521896] [2020-10-28 18:12:51,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:12:51,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:12:51,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913230309] [2020-10-28 18:12:51,077 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:12:51,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:12:51,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:12:51,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:12:51,078 INFO L87 Difference]: Start difference. First operand 4691 states and 7423 transitions. Second operand 5 states. [2020-10-28 18:12:53,085 WARN L193 SmtUtils]: Spent 597.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 18:12:53,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:12:53,561 INFO L93 Difference]: Finished difference Result 13480 states and 21411 transitions. [2020-10-28 18:12:53,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:12:53,562 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2020-10-28 18:12:53,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:12:53,614 INFO L225 Difference]: With dead ends: 13480 [2020-10-28 18:12:53,615 INFO L226 Difference]: Without dead ends: 9005 [2020-10-28 18:12:53,627 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:12:53,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9005 states. [2020-10-28 18:12:54,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9005 to 9002. [2020-10-28 18:12:54,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9002 states. [2020-10-28 18:12:54,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9002 states to 9002 states and 14115 transitions. [2020-10-28 18:12:54,566 INFO L78 Accepts]: Start accepts. Automaton has 9002 states and 14115 transitions. Word has length 68 [2020-10-28 18:12:54,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:12:54,567 INFO L481 AbstractCegarLoop]: Abstraction has 9002 states and 14115 transitions. [2020-10-28 18:12:54,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:12:54,567 INFO L276 IsEmpty]: Start isEmpty. Operand 9002 states and 14115 transitions. [2020-10-28 18:12:54,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-28 18:12:54,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:12:54,578 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] [2020-10-28 18:12:54,578 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 18:12:54,579 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:12:54,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:12:54,579 INFO L82 PathProgramCache]: Analyzing trace with hash 374861737, now seen corresponding path program 1 times [2020-10-28 18:12:54,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:12:54,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2079722807] [2020-10-28 18:12:54,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:12:54,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:12:54,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:54,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:54,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:54,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:54,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:54,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:12:59,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:12:59,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 18:12:59,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 18:12:59,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 18:12:59,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:12:59,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:12:59,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:12:59,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-28 18:12:59,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 18:12:59,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:13:00,179 WARN L193 SmtUtils]: Spent 533.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 18:13:00,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:13:00,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:13:00,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:00,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:13:00,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:13:00,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:13:00,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 18:13:00,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:13:00,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:13:00,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:13:00,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:13:00,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:13:00,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:13:00,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:13:00,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2079722807] [2020-10-28 18:13:00,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:13:00,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:13:00,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552268121] [2020-10-28 18:13:00,228 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:13:00,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:13:00,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:13:00,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:13:00,230 INFO L87 Difference]: Start difference. First operand 9002 states and 14115 transitions. Second operand 4 states. [2020-10-28 18:13:00,851 WARN L193 SmtUtils]: Spent 570.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:13:02,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:13:02,809 INFO L93 Difference]: Finished difference Result 22640 states and 36391 transitions. [2020-10-28 18:13:02,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:13:02,810 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 69 [2020-10-28 18:13:02,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:13:02,869 INFO L225 Difference]: With dead ends: 22640 [2020-10-28 18:13:02,870 INFO L226 Difference]: Without dead ends: 14797 [2020-10-28 18:13:02,890 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:13:02,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14797 states. [2020-10-28 18:13:04,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14797 to 14666. [2020-10-28 18:13:04,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14666 states. [2020-10-28 18:13:04,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14666 states to 14666 states and 22659 transitions. [2020-10-28 18:13:04,056 INFO L78 Accepts]: Start accepts. Automaton has 14666 states and 22659 transitions. Word has length 69 [2020-10-28 18:13:04,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:13:04,057 INFO L481 AbstractCegarLoop]: Abstraction has 14666 states and 22659 transitions. [2020-10-28 18:13:04,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:13:04,057 INFO L276 IsEmpty]: Start isEmpty. Operand 14666 states and 22659 transitions. [2020-10-28 18:13:04,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-28 18:13:04,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:13:04,072 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] [2020-10-28 18:13:04,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 18:13:04,073 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:13:04,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:13:04,073 INFO L82 PathProgramCache]: Analyzing trace with hash -612611848, now seen corresponding path program 1 times [2020-10-28 18:13:04,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:13:04,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [515708600] [2020-10-28 18:13:04,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:13:04,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:13:04,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:04,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:04,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:04,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:04,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:05,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:06,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:09,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:13:09,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-28 18:13:09,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 18:13:09,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 18:13:09,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:13:09,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:13:09,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:13:09,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 18:13:09,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-28 18:13:09,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:13:09,734 WARN L193 SmtUtils]: Spent 571.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 18:13:09,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:13:09,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:13:09,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:09,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:13:09,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:13:09,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:13:09,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 18:13:09,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:13:09,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:13:09,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:13:09,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:13:09,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:13:09,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:13:09,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:13:09,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [515708600] [2020-10-28 18:13:09,778 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:13:09,778 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:13:09,779 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44425263] [2020-10-28 18:13:09,779 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:13:09,779 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:13:09,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:13:09,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:13:09,780 INFO L87 Difference]: Start difference. First operand 14666 states and 22659 transitions. Second operand 5 states. [2020-10-28 18:13:12,305 WARN L193 SmtUtils]: Spent 646.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 18:13:13,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:13:13,739 INFO L93 Difference]: Finished difference Result 43012 states and 66526 transitions. [2020-10-28 18:13:13,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 18:13:13,740 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 72 [2020-10-28 18:13:13,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:13:13,811 INFO L225 Difference]: With dead ends: 43012 [2020-10-28 18:13:13,811 INFO L226 Difference]: Without dead ends: 28659 [2020-10-28 18:13:13,844 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 18:13:13,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28659 states. [2020-10-28 18:13:16,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28659 to 28656. [2020-10-28 18:13:16,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28656 states. [2020-10-28 18:13:16,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28656 states to 28656 states and 43973 transitions. [2020-10-28 18:13:16,139 INFO L78 Accepts]: Start accepts. Automaton has 28656 states and 43973 transitions. Word has length 72 [2020-10-28 18:13:16,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:13:16,139 INFO L481 AbstractCegarLoop]: Abstraction has 28656 states and 43973 transitions. [2020-10-28 18:13:16,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:13:16,140 INFO L276 IsEmpty]: Start isEmpty. Operand 28656 states and 43973 transitions. [2020-10-28 18:13:16,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-28 18:13:16,162 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:13:16,162 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] [2020-10-28 18:13:16,163 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 18:13:16,163 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:13:16,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:13:16,163 INFO L82 PathProgramCache]: Analyzing trace with hash -809078903, now seen corresponding path program 1 times [2020-10-28 18:13:16,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:13:16,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [78873052] [2020-10-28 18:13:16,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:13:16,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:13:16,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:16,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:16,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:16,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:16,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:20,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:21,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:13:21,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 18:13:21,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 18:13:21,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 18:13:21,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:13:21,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:13:21,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:13:21,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 18:13:21,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 18:13:21,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:13:21,839 WARN L193 SmtUtils]: Spent 574.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 18:13:21,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:13:21,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:13:21,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:21,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:13:21,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:13:21,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:13:21,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 18:13:21,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:13:21,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:13:21,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:13:21,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:13:21,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:13:21,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:13:21,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:13:21,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [78873052] [2020-10-28 18:13:21,874 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:13:21,874 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:13:21,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853528097] [2020-10-28 18:13:21,874 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:13:21,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:13:21,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:13:21,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:13:21,875 INFO L87 Difference]: Start difference. First operand 28656 states and 43973 transitions. Second operand 5 states. [2020-10-28 18:13:24,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:13:24,234 INFO L93 Difference]: Finished difference Result 46943 states and 71884 transitions. [2020-10-28 18:13:24,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:13:24,235 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2020-10-28 18:13:24,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:13:24,277 INFO L225 Difference]: With dead ends: 46943 [2020-10-28 18:13:24,277 INFO L226 Difference]: Without dead ends: 18390 [2020-10-28 18:13:24,329 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:13:24,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18390 states. [2020-10-28 18:13:25,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18390 to 18390. [2020-10-28 18:13:25,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18390 states. [2020-10-28 18:13:25,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18390 states to 18390 states and 28056 transitions. [2020-10-28 18:13:25,672 INFO L78 Accepts]: Start accepts. Automaton has 18390 states and 28056 transitions. Word has length 73 [2020-10-28 18:13:25,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:13:25,672 INFO L481 AbstractCegarLoop]: Abstraction has 18390 states and 28056 transitions. [2020-10-28 18:13:25,672 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:13:25,672 INFO L276 IsEmpty]: Start isEmpty. Operand 18390 states and 28056 transitions. [2020-10-28 18:13:25,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-28 18:13:25,684 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:13:25,685 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] [2020-10-28 18:13:25,685 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 18:13:25,685 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:13:25,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:13:25,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1338563611, now seen corresponding path program 1 times [2020-10-28 18:13:25,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:13:25,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [62998024] [2020-10-28 18:13:25,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:13:25,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:13:25,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:25,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:25,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:25,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:25,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:29,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:30,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:13:30,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 18:13:30,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 18:13:30,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 18:13:30,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:13:30,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:13:30,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:13:30,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 18:13:30,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 18:13:30,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:13:31,371 WARN L193 SmtUtils]: Spent 556.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 18:13:31,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:13:31,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:13:31,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:31,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:13:31,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:13:31,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:13:31,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 18:13:31,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:13:31,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:13:31,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:13:31,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:13:31,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:13:31,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:13:31,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:13:31,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [62998024] [2020-10-28 18:13:31,405 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:13:31,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:13:31,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283069888] [2020-10-28 18:13:31,406 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:13:31,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:13:31,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:13:31,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:13:31,407 INFO L87 Difference]: Start difference. First operand 18390 states and 28056 transitions. Second operand 5 states. [2020-10-28 18:13:33,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:13:33,288 INFO L93 Difference]: Finished difference Result 30121 states and 45882 transitions. [2020-10-28 18:13:33,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:13:33,289 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2020-10-28 18:13:33,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:13:33,314 INFO L225 Difference]: With dead ends: 30121 [2020-10-28 18:13:33,315 INFO L226 Difference]: Without dead ends: 11953 [2020-10-28 18:13:33,339 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:13:33,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11953 states. [2020-10-28 18:13:34,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11953 to 11951. [2020-10-28 18:13:34,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11951 states. [2020-10-28 18:13:34,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11951 states to 11951 states and 18078 transitions. [2020-10-28 18:13:34,350 INFO L78 Accepts]: Start accepts. Automaton has 11951 states and 18078 transitions. Word has length 73 [2020-10-28 18:13:34,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:13:34,350 INFO L481 AbstractCegarLoop]: Abstraction has 11951 states and 18078 transitions. [2020-10-28 18:13:34,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:13:34,350 INFO L276 IsEmpty]: Start isEmpty. Operand 11951 states and 18078 transitions. [2020-10-28 18:13:34,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-28 18:13:34,356 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:13:34,356 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] [2020-10-28 18:13:34,356 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 18:13:34,356 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:13:34,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:13:34,357 INFO L82 PathProgramCache]: Analyzing trace with hash 260498771, now seen corresponding path program 1 times [2020-10-28 18:13:34,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:13:34,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [429668517] [2020-10-28 18:13:34,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:13:34,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:13:34,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:34,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:34,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:34,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:34,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:39,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:13:39,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-28 18:13:39,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 18:13:39,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 18:13:39,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:13:39,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:13:39,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 18:13:39,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 18:13:39,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 18:13:39,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:13:40,046 WARN L193 SmtUtils]: Spent 572.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 18:13:40,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:13:40,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:13:40,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:40,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:13:40,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:13:40,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:13:40,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 18:13:40,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:13:40,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:13:40,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:13:40,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:13:40,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:13:40,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:13:40,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:13:40,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [429668517] [2020-10-28 18:13:40,094 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:13:40,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:13:40,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860314462] [2020-10-28 18:13:40,095 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 18:13:40,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:13:40,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 18:13:40,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:13:40,096 INFO L87 Difference]: Start difference. First operand 11951 states and 18078 transitions. Second operand 5 states. [2020-10-28 18:13:41,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:13:41,700 INFO L93 Difference]: Finished difference Result 19596 states and 29644 transitions. [2020-10-28 18:13:41,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:13:41,701 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 75 [2020-10-28 18:13:41,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:13:41,721 INFO L225 Difference]: With dead ends: 19596 [2020-10-28 18:13:41,721 INFO L226 Difference]: Without dead ends: 10207 [2020-10-28 18:13:41,735 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:13:41,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10207 states. [2020-10-28 18:13:42,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10207 to 10205. [2020-10-28 18:13:42,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10205 states. [2020-10-28 18:13:42,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10205 states to 10205 states and 15380 transitions. [2020-10-28 18:13:42,630 INFO L78 Accepts]: Start accepts. Automaton has 10205 states and 15380 transitions. Word has length 75 [2020-10-28 18:13:42,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:13:42,630 INFO L481 AbstractCegarLoop]: Abstraction has 10205 states and 15380 transitions. [2020-10-28 18:13:42,630 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 18:13:42,630 INFO L276 IsEmpty]: Start isEmpty. Operand 10205 states and 15380 transitions. [2020-10-28 18:13:42,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-28 18:13:42,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:13:42,636 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] [2020-10-28 18:13:42,637 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 18:13:42,637 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:13:42,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:13:42,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1657524273, now seen corresponding path program 1 times [2020-10-28 18:13:42,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:13:42,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1444548717] [2020-10-28 18:13:42,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:13:42,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:13:42,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:42,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:42,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:42,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:43,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:43,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:44,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:47,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:13:47,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 18:13:47,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 18:13:47,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 18:13:47,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:13:47,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:13:47,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:13:47,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-28 18:13:47,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 18:13:47,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:13:48,282 WARN L193 SmtUtils]: Spent 573.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 18:13:48,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:13:48,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:13:48,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:48,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:13:48,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:13:48,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:13:48,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 18:13:48,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:13:48,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:13:48,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:13:48,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:13:48,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:13:48,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:13:48,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:13:48,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1444548717] [2020-10-28 18:13:48,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:13:48,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:13:48,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202531793] [2020-10-28 18:13:48,312 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:13:48,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:13:48,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:13:48,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:13:48,313 INFO L87 Difference]: Start difference. First operand 10205 states and 15380 transitions. Second operand 4 states. [2020-10-28 18:13:48,973 WARN L193 SmtUtils]: Spent 607.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:13:50,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:13:50,993 INFO L93 Difference]: Finished difference Result 20100 states and 30721 transitions. [2020-10-28 18:13:50,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:13:50,994 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 79 [2020-10-28 18:13:50,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:13:51,013 INFO L225 Difference]: With dead ends: 20100 [2020-10-28 18:13:51,013 INFO L226 Difference]: Without dead ends: 14997 [2020-10-28 18:13:51,024 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:13:51,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14997 states. [2020-10-28 18:13:52,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14997 to 14994. [2020-10-28 18:13:52,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14994 states. [2020-10-28 18:13:52,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14994 states to 14994 states and 22635 transitions. [2020-10-28 18:13:52,271 INFO L78 Accepts]: Start accepts. Automaton has 14994 states and 22635 transitions. Word has length 79 [2020-10-28 18:13:52,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:13:52,271 INFO L481 AbstractCegarLoop]: Abstraction has 14994 states and 22635 transitions. [2020-10-28 18:13:52,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:13:52,271 INFO L276 IsEmpty]: Start isEmpty. Operand 14994 states and 22635 transitions. [2020-10-28 18:13:52,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-28 18:13:52,276 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:13:52,276 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] [2020-10-28 18:13:52,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 18:13:52,277 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:13:52,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:13:52,277 INFO L82 PathProgramCache]: Analyzing trace with hash 67165343, now seen corresponding path program 1 times [2020-10-28 18:13:52,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:13:52,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [655159322] [2020-10-28 18:13:52,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:13:52,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:13:52,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:52,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:52,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:52,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:52,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:57,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:13:57,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 18:13:57,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 18:13:57,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 18:13:57,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:13:57,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:13:57,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:13:57,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-28 18:13:57,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 18:13:57,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:13:57,870 WARN L193 SmtUtils]: Spent 525.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 18:13:57,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:13:57,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:13:57,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:13:57,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:13:57,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:13:57,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:13:57,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 18:13:57,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:13:57,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:13:57,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:13:57,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:13:57,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:13:57,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:13:57,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:13:57,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [655159322] [2020-10-28 18:13:57,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:13:57,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:13:57,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981082725] [2020-10-28 18:13:57,895 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:13:57,896 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:13:57,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:13:57,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:13:57,896 INFO L87 Difference]: Start difference. First operand 14994 states and 22635 transitions. Second operand 4 states. [2020-10-28 18:13:58,585 WARN L193 SmtUtils]: Spent 638.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:14:01,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:14:01,095 INFO L93 Difference]: Finished difference Result 26606 states and 40881 transitions. [2020-10-28 18:14:01,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:14:01,096 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 79 [2020-10-28 18:14:01,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:14:01,127 INFO L225 Difference]: With dead ends: 26606 [2020-10-28 18:14:01,127 INFO L226 Difference]: Without dead ends: 19268 [2020-10-28 18:14:01,138 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:14:01,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19268 states. [2020-10-28 18:14:02,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19268 to 19265. [2020-10-28 18:14:02,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19265 states. [2020-10-28 18:14:02,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19265 states to 19265 states and 29297 transitions. [2020-10-28 18:14:02,646 INFO L78 Accepts]: Start accepts. Automaton has 19265 states and 29297 transitions. Word has length 79 [2020-10-28 18:14:02,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:14:02,646 INFO L481 AbstractCegarLoop]: Abstraction has 19265 states and 29297 transitions. [2020-10-28 18:14:02,646 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:14:02,646 INFO L276 IsEmpty]: Start isEmpty. Operand 19265 states and 29297 transitions. [2020-10-28 18:14:02,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-28 18:14:02,649 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:14:02,650 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] [2020-10-28 18:14:02,650 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 18:14:02,650 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:14:02,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:14:02,650 INFO L82 PathProgramCache]: Analyzing trace with hash 57714716, now seen corresponding path program 1 times [2020-10-28 18:14:02,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:14:02,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [518886871] [2020-10-28 18:14:02,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:14:02,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:14:02,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:02,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:02,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:03,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:07,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:14:07,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 18:14:07,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 18:14:07,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4863 [2020-10-28 18:14:07,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:14:07,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:14:07,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:14:07,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-10-28 18:14:07,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 18:14:07,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:14:08,157 WARN L193 SmtUtils]: Spent 574.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 18:14:08,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:14:08,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:14:08,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:08,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:14:08,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:14:08,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:14:08,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 18:14:08,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:14:08,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:14:08,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:14:08,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:14:08,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:14:08,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:14:08,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:14:08,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [518886871] [2020-10-28 18:14:08,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:14:08,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:14:08,185 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322653619] [2020-10-28 18:14:08,186 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:14:08,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:14:08,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:14:08,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:14:08,187 INFO L87 Difference]: Start difference. First operand 19265 states and 29297 transitions. Second operand 4 states. [2020-10-28 18:14:08,865 WARN L193 SmtUtils]: Spent 622.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:14:12,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:14:12,385 INFO L93 Difference]: Finished difference Result 43877 states and 68082 transitions. [2020-10-28 18:14:12,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:14:12,386 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 80 [2020-10-28 18:14:12,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:14:12,443 INFO L225 Difference]: With dead ends: 43877 [2020-10-28 18:14:12,443 INFO L226 Difference]: Without dead ends: 25853 [2020-10-28 18:14:12,471 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:14:12,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25853 states. [2020-10-28 18:14:14,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25853 to 25850. [2020-10-28 18:14:14,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25850 states. [2020-10-28 18:14:15,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25850 states to 25850 states and 40029 transitions. [2020-10-28 18:14:15,003 INFO L78 Accepts]: Start accepts. Automaton has 25850 states and 40029 transitions. Word has length 80 [2020-10-28 18:14:15,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:14:15,003 INFO L481 AbstractCegarLoop]: Abstraction has 25850 states and 40029 transitions. [2020-10-28 18:14:15,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:14:15,003 INFO L276 IsEmpty]: Start isEmpty. Operand 25850 states and 40029 transitions. [2020-10-28 18:14:15,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-28 18:14:15,007 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:14:15,007 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] [2020-10-28 18:14:15,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 18:14:15,008 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:14:15,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:14:15,008 INFO L82 PathProgramCache]: Analyzing trace with hash -259242297, now seen corresponding path program 1 times [2020-10-28 18:14:15,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:14:15,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [902684886] [2020-10-28 18:14:15,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:14:15,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:14:15,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:15,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:15,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:15,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:18,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:14:18,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 18:14:18,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 18:14:18,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3065 [2020-10-28 18:14:18,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:14:18,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:14:18,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:14:18,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:14:18,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 18:14:18,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:14:18,758 WARN L193 SmtUtils]: Spent 540.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 18:14:18,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:14:18,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:14:18,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:18,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:14:18,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:14:18,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:14:18,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 18:14:18,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:14:18,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:14:18,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:14:18,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:14:18,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:14:18,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:14:18,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:14:18,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [902684886] [2020-10-28 18:14:18,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:14:18,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:14:18,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328625713] [2020-10-28 18:14:18,842 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:14:18,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:14:18,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:14:18,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:14:18,846 INFO L87 Difference]: Start difference. First operand 25850 states and 40029 transitions. Second operand 6 states. [2020-10-28 18:14:19,564 WARN L193 SmtUtils]: Spent 642.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-28 18:14:21,706 WARN L193 SmtUtils]: Spent 601.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-28 18:14:24,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:14:24,853 INFO L93 Difference]: Finished difference Result 64220 states and 100249 transitions. [2020-10-28 18:14:24,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 18:14:24,854 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 82 [2020-10-28 18:14:24,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:14:24,912 INFO L225 Difference]: With dead ends: 64220 [2020-10-28 18:14:24,912 INFO L226 Difference]: Without dead ends: 39611 [2020-10-28 18:14:24,938 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-28 18:14:24,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39611 states. [2020-10-28 18:14:28,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39611 to 39608. [2020-10-28 18:14:28,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39608 states. [2020-10-28 18:14:28,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39608 states to 39608 states and 61113 transitions. [2020-10-28 18:14:28,782 INFO L78 Accepts]: Start accepts. Automaton has 39608 states and 61113 transitions. Word has length 82 [2020-10-28 18:14:28,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:14:28,782 INFO L481 AbstractCegarLoop]: Abstraction has 39608 states and 61113 transitions. [2020-10-28 18:14:28,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:14:28,782 INFO L276 IsEmpty]: Start isEmpty. Operand 39608 states and 61113 transitions. [2020-10-28 18:14:28,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-28 18:14:28,785 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:14:28,785 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] [2020-10-28 18:14:28,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 18:14:28,786 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:14:28,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:14:28,786 INFO L82 PathProgramCache]: Analyzing trace with hash -424800212, now seen corresponding path program 1 times [2020-10-28 18:14:28,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:14:28,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1535562209] [2020-10-28 18:14:28,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:14:28,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:14:28,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:28,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:29,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:14:29,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 18:14:29,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 18:14:29,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 876 [2020-10-28 18:14:29,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:14:29,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:14:29,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:14:29,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:14:29,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-28 18:14:29,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:14:30,382 WARN L193 SmtUtils]: Spent 597.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 18:14:30,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:14:30,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:14:30,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:30,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:14:30,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:14:30,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:14:30,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 18:14:30,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:14:30,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:14:30,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:14:30,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:14:30,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:14:30,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:14:30,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:14:30,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1535562209] [2020-10-28 18:14:30,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:14:30,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:14:30,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836883416] [2020-10-28 18:14:30,445 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:14:30,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:14:30,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:14:30,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:14:30,446 INFO L87 Difference]: Start difference. First operand 39608 states and 61113 transitions. Second operand 6 states. [2020-10-28 18:14:31,157 WARN L193 SmtUtils]: Spent 630.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-28 18:14:33,495 WARN L193 SmtUtils]: Spent 631.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-28 18:14:40,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:14:40,218 INFO L93 Difference]: Finished difference Result 116278 states and 180083 transitions. [2020-10-28 18:14:40,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 18:14:40,219 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 82 [2020-10-28 18:14:40,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:14:40,370 INFO L225 Difference]: With dead ends: 116278 [2020-10-28 18:14:40,370 INFO L226 Difference]: Without dead ends: 77558 [2020-10-28 18:14:40,424 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-28 18:14:40,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77558 states. [2020-10-28 18:14:48,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77558 to 77555. [2020-10-28 18:14:48,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77555 states. [2020-10-28 18:14:48,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77555 states to 77555 states and 119509 transitions. [2020-10-28 18:14:48,563 INFO L78 Accepts]: Start accepts. Automaton has 77555 states and 119509 transitions. Word has length 82 [2020-10-28 18:14:48,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:14:48,563 INFO L481 AbstractCegarLoop]: Abstraction has 77555 states and 119509 transitions. [2020-10-28 18:14:48,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:14:48,563 INFO L276 IsEmpty]: Start isEmpty. Operand 77555 states and 119509 transitions. [2020-10-28 18:14:48,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-28 18:14:48,566 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:14:48,566 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] [2020-10-28 18:14:48,566 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 18:14:48,566 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:14:48,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:14:48,567 INFO L82 PathProgramCache]: Analyzing trace with hash -1390252143, now seen corresponding path program 1 times [2020-10-28 18:14:48,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:14:48,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1322008436] [2020-10-28 18:14:48,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:14:48,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:14:48,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:48,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:14:48,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 18:14:48,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:14:48,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-28 18:14:48,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:14:48,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:14:48,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:14:48,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-28 18:14:48,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-28 18:14:48,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:14:49,378 WARN L193 SmtUtils]: Spent 567.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 18:14:49,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:14:49,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:14:49,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:14:49,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:14:49,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:14:49,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:14:49,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 18:14:49,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:14:49,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:14:49,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:14:49,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:14:49,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:14:49,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:14:49,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:14:49,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1322008436] [2020-10-28 18:14:49,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:14:49,410 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 18:14:49,410 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626592485] [2020-10-28 18:14:49,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:14:49,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:14:49,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:14:49,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:14:49,411 INFO L87 Difference]: Start difference. First operand 77555 states and 119509 transitions. Second operand 6 states. [2020-10-28 18:14:50,137 WARN L193 SmtUtils]: Spent 641.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 18:14:53,280 WARN L193 SmtUtils]: Spent 620.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:14:53,910 WARN L193 SmtUtils]: Spent 599.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 18:14:56,211 WARN L193 SmtUtils]: Spent 565.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-28 18:14:56,906 WARN L193 SmtUtils]: Spent 578.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 18:15:31,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:15:31,542 INFO L93 Difference]: Finished difference Result 460730 states and 716320 transitions. [2020-10-28 18:15:31,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 18:15:31,543 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 82 [2020-10-28 18:15:31,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:15:32,784 INFO L225 Difference]: With dead ends: 460730 [2020-10-28 18:15:32,784 INFO L226 Difference]: Without dead ends: 384416 [2020-10-28 18:15:32,928 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-10-28 18:15:33,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384416 states.