/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=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 00:19:16,412 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 00:19:16,415 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 00:19:16,450 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 00:19:16,451 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 00:19:16,453 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 00:19:16,454 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 00:19:16,457 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 00:19:16,459 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 00:19:16,460 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 00:19:16,461 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 00:19:16,462 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 00:19:16,463 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 00:19:16,464 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 00:19:16,466 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 00:19:16,468 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 00:19:16,469 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 00:19:16,472 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 00:19:16,486 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 00:19:16,489 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 00:19:16,491 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 00:19:16,492 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 00:19:16,493 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 00:19:16,494 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 00:19:16,497 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 00:19:16,498 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 00:19:16,498 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 00:19:16,499 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 00:19:16,499 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 00:19:16,501 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-10-28 00:19:16,506 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 00:19:16,507 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 00:19:16,508 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 00:19:16,509 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 00:19:16,535 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 00:19:16,536 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 00:19:16,537 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 00:19:16,537 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 00:19:16,538 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 00:19:16,538 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 00:19:16,538 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 00:19:16,538 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 00:19:16,538 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 00:19:16,539 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 00:19:16,539 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 00:19:16,539 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 00:19:16,539 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 00:19:16,539 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 00:19:16,540 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 00:19:16,540 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 00:19:16,540 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 00:19:16,540 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 00:19:16,540 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 00:19:16,541 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 00:19:16,541 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 00:19:16,541 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 00:19:16,541 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 00:19:16,542 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 00:19:16,542 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 00:19:16,542 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 00:19:16,542 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 00:19:16,542 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 00:19:16,543 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 00:19:16,543 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-28 00:19:16,891 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 00:19:16,933 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 00:19:16,938 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 00:19:16,939 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 00:19:16,940 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 00:19:16,941 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-10-28 00:19:17,027 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/357667e16/8aa738aa2fbd45d3af5a63429e5ca166/FLAG84f51f2f5 [2020-10-28 00:19:17,777 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 00:19:17,778 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-10-28 00:19:17,802 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/357667e16/8aa738aa2fbd45d3af5a63429e5ca166/FLAG84f51f2f5 [2020-10-28 00:19:18,024 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/357667e16/8aa738aa2fbd45d3af5a63429e5ca166 [2020-10-28 00:19:18,027 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 00:19:18,035 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 00:19:18,036 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 00:19:18,037 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 00:19:18,040 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 00:19:18,041 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:19:18" (1/1) ... [2020-10-28 00:19:18,045 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fa8d0ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:19:18, skipping insertion in model container [2020-10-28 00:19:18,045 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:19:18" (1/1) ... [2020-10-28 00:19:18,053 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 00:19:18,109 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 00:19:18,533 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 00:19:18,551 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 00:19:18,766 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 00:19:18,834 INFO L208 MainTranslator]: Completed translation [2020-10-28 00:19:18,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:19:18 WrapperNode [2020-10-28 00:19:18,836 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 00:19:18,837 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 00:19:18,838 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 00:19:18,838 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 00:19:18,852 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:19:18" (1/1) ... [2020-10-28 00:19:18,854 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:19:18" (1/1) ... [2020-10-28 00:19:18,897 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:19:18" (1/1) ... [2020-10-28 00:19:18,897 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:19:18" (1/1) ... [2020-10-28 00:19:18,948 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:19:18" (1/1) ... [2020-10-28 00:19:18,976 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:19:18" (1/1) ... [2020-10-28 00:19:18,981 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:19:18" (1/1) ... [2020-10-28 00:19:18,996 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 00:19:18,999 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 00:19:18,999 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 00:19:18,999 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 00:19:19,000 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:19:18" (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 00:19:19,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 00:19:19,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 00:19:19,085 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 00:19:19,085 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 00:19:19,086 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 00:19:19,086 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 00:19:19,087 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 00:19:19,087 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 00:19:19,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 00:19:19,087 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 00:19:19,088 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 00:19:19,088 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 00:19:19,088 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 00:19:19,088 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 00:19:19,088 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 00:19:19,089 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 00:19:19,090 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 00:19:19,090 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 00:19:19,090 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-28 00:19:19,090 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-28 00:19:19,091 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 00:19:19,091 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 00:19:19,091 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 00:19:19,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 00:19:19,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 00:19:19,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 00:19:19,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 00:19:19,092 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 00:19:19,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 00:19:20,418 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 00:19:20,419 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 00:19:20,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:19:20 BoogieIcfgContainer [2020-10-28 00:19:20,421 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 00:19:20,423 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 00:19:20,423 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 00:19:20,427 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 00:19:20,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:19:18" (1/3) ... [2020-10-28 00:19:20,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b7ddcef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:19:20, skipping insertion in model container [2020-10-28 00:19:20,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:19:18" (2/3) ... [2020-10-28 00:19:20,429 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b7ddcef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:19:20, skipping insertion in model container [2020-10-28 00:19:20,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:19:20" (3/3) ... [2020-10-28 00:19:20,431 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-10-28 00:19:20,445 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 00:19:20,450 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 00:19:20,477 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 00:19:20,527 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 00:19:20,527 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 00:19:20,528 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 00:19:20,528 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 00:19:20,528 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 00:19:20,528 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 00:19:20,528 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 00:19:20,528 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 00:19:20,583 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states. [2020-10-28 00:19:20,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-28 00:19:20,618 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:19:20,620 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:19:20,620 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:19:20,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:19:20,637 INFO L82 PathProgramCache]: Analyzing trace with hash 880061447, now seen corresponding path program 1 times [2020-10-28 00:19:20,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:19:20,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [511478212] [2020-10-28 00:19:20,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:19:20,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:19:21,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:21,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:21,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:21,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:21,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:21,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:21,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:23,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:23,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:26,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:19:26,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-28 00:19:26,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 00:19:26,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-28 00:19:26,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:19:26,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:19:26,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-28 00:19:26,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 00:19:26,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 00:19:26,552 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 00:19:26,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:19:26,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:19:26,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:26,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:19:26,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:19:26,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:19:26,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 00:19:26,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:19:26,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:19:26,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:19:26,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:19:26,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:19:26,648 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 00:19:26,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [511478212] [2020-10-28 00:19:26,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:19:26,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:19:26,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075522925] [2020-10-28 00:19:26,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:19:26,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:19:26,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:19:26,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:19:26,689 INFO L87 Difference]: Start difference. First operand 339 states. Second operand 5 states. [2020-10-28 00:19:28,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:19:28,320 INFO L93 Difference]: Finished difference Result 447 states and 720 transitions. [2020-10-28 00:19:28,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:19:28,323 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 84 [2020-10-28 00:19:28,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:19:28,339 INFO L225 Difference]: With dead ends: 447 [2020-10-28 00:19:28,339 INFO L226 Difference]: Without dead ends: 332 [2020-10-28 00:19:28,343 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:19:28,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2020-10-28 00:19:28,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 332. [2020-10-28 00:19:28,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 332 states. [2020-10-28 00:19:28,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 536 transitions. [2020-10-28 00:19:28,424 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 536 transitions. Word has length 84 [2020-10-28 00:19:28,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:19:28,425 INFO L481 AbstractCegarLoop]: Abstraction has 332 states and 536 transitions. [2020-10-28 00:19:28,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:19:28,425 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 536 transitions. [2020-10-28 00:19:28,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-28 00:19:28,430 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:19:28,430 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:19:28,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 00:19:28,430 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:19:28,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:19:28,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1350820129, now seen corresponding path program 1 times [2020-10-28 00:19:28,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:19:28,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [281495506] [2020-10-28 00:19:28,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:19:28,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:19:28,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:28,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:28,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:28,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:28,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:28,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:28,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:29,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:31,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:33,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:19:33,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-28 00:19:33,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 00:19:33,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-28 00:19:33,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:19:33,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:19:33,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-28 00:19:33,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 00:19:33,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:19:33,915 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 00:19:33,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:19:33,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:19:33,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:33,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:19:33,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:19:33,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:19:33,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 00:19:33,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:19:33,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:19:33,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:19:33,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:19:33,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 00:19:34,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:19:34,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [281495506] [2020-10-28 00:19:34,021 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:19:34,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:19:34,022 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863954698] [2020-10-28 00:19:34,024 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:19:34,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:19:34,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:19:34,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:19:34,027 INFO L87 Difference]: Start difference. First operand 332 states and 536 transitions. Second operand 4 states. [2020-10-28 00:19:34,467 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-28 00:19:36,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:19:36,196 INFO L93 Difference]: Finished difference Result 779 states and 1243 transitions. [2020-10-28 00:19:36,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:19:36,197 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2020-10-28 00:19:36,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:19:36,203 INFO L225 Difference]: With dead ends: 779 [2020-10-28 00:19:36,203 INFO L226 Difference]: Without dead ends: 596 [2020-10-28 00:19:36,206 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:19:36,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 596 states. [2020-10-28 00:19:36,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 596 to 571. [2020-10-28 00:19:36,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2020-10-28 00:19:36,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 915 transitions. [2020-10-28 00:19:36,260 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 915 transitions. Word has length 85 [2020-10-28 00:19:36,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:19:36,260 INFO L481 AbstractCegarLoop]: Abstraction has 571 states and 915 transitions. [2020-10-28 00:19:36,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:19:36,260 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 915 transitions. [2020-10-28 00:19:36,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-28 00:19:36,265 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:19:36,266 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:19:36,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 00:19:36,266 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:19:36,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:19:36,267 INFO L82 PathProgramCache]: Analyzing trace with hash -1783046740, now seen corresponding path program 1 times [2020-10-28 00:19:36,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:19:36,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2016348233] [2020-10-28 00:19:36,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:19:36,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:19:36,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:36,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:36,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:36,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:36,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:36,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:37,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:37,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:38,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:41,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:19:41,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-28 00:19:41,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 00:19:41,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-28 00:19:41,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:19:41,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:19:41,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-28 00:19:41,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 00:19:41,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:19:41,682 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 00:19:41,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:19:41,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:19:41,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:41,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:19:41,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:19:41,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:19:41,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 00:19:41,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:19:41,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:19:41,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:19:41,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:19:41,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:19:41,730 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 00:19:41,730 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2016348233] [2020-10-28 00:19:41,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:19:41,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:19:41,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745958929] [2020-10-28 00:19:41,731 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:19:41,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:19:41,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:19:41,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:19:41,733 INFO L87 Difference]: Start difference. First operand 571 states and 915 transitions. Second operand 4 states. [2020-10-28 00:19:42,061 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-28 00:19:44,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:19:44,151 INFO L93 Difference]: Finished difference Result 1267 states and 2012 transitions. [2020-10-28 00:19:44,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:19:44,151 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 86 [2020-10-28 00:19:44,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:19:44,157 INFO L225 Difference]: With dead ends: 1267 [2020-10-28 00:19:44,157 INFO L226 Difference]: Without dead ends: 992 [2020-10-28 00:19:44,160 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:19:44,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 992 states. [2020-10-28 00:19:44,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 992 to 945. [2020-10-28 00:19:44,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 945 states. [2020-10-28 00:19:44,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 945 states to 945 states and 1503 transitions. [2020-10-28 00:19:44,220 INFO L78 Accepts]: Start accepts. Automaton has 945 states and 1503 transitions. Word has length 86 [2020-10-28 00:19:44,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:19:44,220 INFO L481 AbstractCegarLoop]: Abstraction has 945 states and 1503 transitions. [2020-10-28 00:19:44,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:19:44,221 INFO L276 IsEmpty]: Start isEmpty. Operand 945 states and 1503 transitions. [2020-10-28 00:19:44,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-28 00:19:44,225 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:19:44,225 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:19:44,226 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 00:19:44,226 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:19:44,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:19:44,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1276838289, now seen corresponding path program 1 times [2020-10-28 00:19:44,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:19:44,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2067432418] [2020-10-28 00:19:44,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:19:44,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:19:44,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:44,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:44,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:44,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:44,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:44,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:45,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:48,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:48,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:49,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:19:49,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-28 00:19:49,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 00:19:49,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-28 00:19:49,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:19:49,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:19:49,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-10-28 00:19:49,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 00:19:49,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:19:49,616 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 00:19:49,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:19:49,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:19:49,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:49,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:19:49,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:19:49,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:19:49,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 00:19:49,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:19:49,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:19:49,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:19:49,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:19:49,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:19:49,658 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 00:19:49,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2067432418] [2020-10-28 00:19:49,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:19:49,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:19:49,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70768056] [2020-10-28 00:19:49,660 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:19:49,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:19:49,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:19:49,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:19:49,661 INFO L87 Difference]: Start difference. First operand 945 states and 1503 transitions. Second operand 4 states. [2020-10-28 00:19:49,992 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-28 00:19:52,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:19:52,020 INFO L93 Difference]: Finished difference Result 1947 states and 3067 transitions. [2020-10-28 00:19:52,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:19:52,021 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2020-10-28 00:19:52,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:19:52,031 INFO L225 Difference]: With dead ends: 1947 [2020-10-28 00:19:52,032 INFO L226 Difference]: Without dead ends: 1576 [2020-10-28 00:19:52,033 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:19:52,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1576 states. [2020-10-28 00:19:52,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1576 to 1485. [2020-10-28 00:19:52,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1485 states. [2020-10-28 00:19:52,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1485 states to 1485 states and 2339 transitions. [2020-10-28 00:19:52,123 INFO L78 Accepts]: Start accepts. Automaton has 1485 states and 2339 transitions. Word has length 87 [2020-10-28 00:19:52,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:19:52,124 INFO L481 AbstractCegarLoop]: Abstraction has 1485 states and 2339 transitions. [2020-10-28 00:19:52,124 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:19:52,124 INFO L276 IsEmpty]: Start isEmpty. Operand 1485 states and 2339 transitions. [2020-10-28 00:19:52,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-28 00:19:52,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:19:52,128 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:19:52,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 00:19:52,129 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:19:52,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:19:52,129 INFO L82 PathProgramCache]: Analyzing trace with hash 702522036, now seen corresponding path program 1 times [2020-10-28 00:19:52,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:19:52,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [636135892] [2020-10-28 00:19:52,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:19:52,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:19:52,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:52,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:52,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:52,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:52,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:52,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:53,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:57,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:19:57,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-28 00:19:57,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 00:19:57,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-28 00:19:57,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:19:57,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:19:57,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-28 00:19:57,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 00:19:57,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:19:57,614 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 00:19:57,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:19:57,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:19:57,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:57,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:19:57,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:19:57,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:19:57,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 00:19:57,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:19:57,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:19:57,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:19:57,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:19:57,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 00:19:57,681 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 00:19:57,681 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [636135892] [2020-10-28 00:19:57,682 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:19:57,682 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:19:57,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221697515] [2020-10-28 00:19:57,685 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:19:57,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:19:57,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:19:57,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:19:57,686 INFO L87 Difference]: Start difference. First operand 1485 states and 2339 transitions. Second operand 4 states. [2020-10-28 00:19:58,063 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-28 00:19:59,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:19:59,647 INFO L93 Difference]: Finished difference Result 3443 states and 5379 transitions. [2020-10-28 00:19:59,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:19:59,648 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 88 [2020-10-28 00:19:59,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:19:59,663 INFO L225 Difference]: With dead ends: 3443 [2020-10-28 00:19:59,663 INFO L226 Difference]: Without dead ends: 2688 [2020-10-28 00:19:59,666 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:19:59,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2688 states. [2020-10-28 00:19:59,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2688 to 2509. [2020-10-28 00:19:59,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2509 states. [2020-10-28 00:19:59,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2509 states to 2509 states and 3911 transitions. [2020-10-28 00:19:59,812 INFO L78 Accepts]: Start accepts. Automaton has 2509 states and 3911 transitions. Word has length 88 [2020-10-28 00:19:59,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:19:59,812 INFO L481 AbstractCegarLoop]: Abstraction has 2509 states and 3911 transitions. [2020-10-28 00:19:59,812 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:19:59,812 INFO L276 IsEmpty]: Start isEmpty. Operand 2509 states and 3911 transitions. [2020-10-28 00:19:59,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-28 00:19:59,819 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:19:59,819 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:19:59,819 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 00:19:59,819 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:19:59,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:19:59,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1445134224, now seen corresponding path program 1 times [2020-10-28 00:19:59,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:19:59,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [453332667] [2020-10-28 00:19:59,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:19:59,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:19:59,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:59,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:59,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:19:59,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:00,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:01,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:02,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:20:02,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-28 00:20:02,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 00:20:02,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2575 [2020-10-28 00:20:02,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:20:02,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:20:02,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 64 [2020-10-28 00:20:02,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 00:20:02,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:20:02,722 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 00:20:02,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:20:02,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:20:02,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:02,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:20:02,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:20:02,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:20:02,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 00:20:02,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:20:02,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:20:02,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:20:02,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:20:02,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:20:02,766 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 00:20:02,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [453332667] [2020-10-28 00:20:02,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:20:02,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:20:02,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692040766] [2020-10-28 00:20:02,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:20:02,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:20:02,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:20:02,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:20:02,771 INFO L87 Difference]: Start difference. First operand 2509 states and 3911 transitions. Second operand 4 states. [2020-10-28 00:20:03,077 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-28 00:20:05,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:20:05,035 INFO L93 Difference]: Finished difference Result 5555 states and 8635 transitions. [2020-10-28 00:20:05,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:20:05,041 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 89 [2020-10-28 00:20:05,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:20:05,063 INFO L225 Difference]: With dead ends: 5555 [2020-10-28 00:20:05,063 INFO L226 Difference]: Without dead ends: 4512 [2020-10-28 00:20:05,066 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:20:05,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4512 states. [2020-10-28 00:20:05,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4512 to 3517. [2020-10-28 00:20:05,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3517 states. [2020-10-28 00:20:05,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3517 states to 3517 states and 5463 transitions. [2020-10-28 00:20:05,264 INFO L78 Accepts]: Start accepts. Automaton has 3517 states and 5463 transitions. Word has length 89 [2020-10-28 00:20:05,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:20:05,264 INFO L481 AbstractCegarLoop]: Abstraction has 3517 states and 5463 transitions. [2020-10-28 00:20:05,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:20:05,264 INFO L276 IsEmpty]: Start isEmpty. Operand 3517 states and 5463 transitions. [2020-10-28 00:20:05,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-28 00:20:05,273 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:20:05,273 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:20:05,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 00:20:05,274 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:20:05,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:20:05,274 INFO L82 PathProgramCache]: Analyzing trace with hash 1870134285, now seen corresponding path program 1 times [2020-10-28 00:20:05,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:20:05,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [697034342] [2020-10-28 00:20:05,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:20:05,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:20:05,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:05,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:05,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:05,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:05,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:06,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:06,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:09,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:20:09,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-28 00:20:09,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 00:20:09,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4126 [2020-10-28 00:20:09,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:20:09,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:20:09,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-28 00:20:09,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 00:20:09,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:20:09,763 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 00:20:09,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:20:09,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:20:09,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:09,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:20:09,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:20:09,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:20:09,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 00:20:09,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:20:09,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:20:09,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:20:09,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:20:09,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:20:09,796 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 00:20:09,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [697034342] [2020-10-28 00:20:09,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:20:09,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:20:09,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587999681] [2020-10-28 00:20:09,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:20:09,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:20:09,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:20:09,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:20:09,799 INFO L87 Difference]: Start difference. First operand 3517 states and 5463 transitions. Second operand 5 states. [2020-10-28 00:20:11,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:20:11,848 INFO L93 Difference]: Finished difference Result 5280 states and 8169 transitions. [2020-10-28 00:20:11,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 00:20:11,849 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 90 [2020-10-28 00:20:11,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:20:11,874 INFO L225 Difference]: With dead ends: 5280 [2020-10-28 00:20:11,874 INFO L226 Difference]: Without dead ends: 5277 [2020-10-28 00:20:11,876 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:20:11,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5277 states. [2020-10-28 00:20:12,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5277 to 3549. [2020-10-28 00:20:12,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3549 states. [2020-10-28 00:20:12,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3549 states to 3549 states and 5495 transitions. [2020-10-28 00:20:12,144 INFO L78 Accepts]: Start accepts. Automaton has 3549 states and 5495 transitions. Word has length 90 [2020-10-28 00:20:12,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:20:12,144 INFO L481 AbstractCegarLoop]: Abstraction has 3549 states and 5495 transitions. [2020-10-28 00:20:12,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:20:12,145 INFO L276 IsEmpty]: Start isEmpty. Operand 3549 states and 5495 transitions. [2020-10-28 00:20:12,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-28 00:20:12,154 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:20:12,154 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:20:12,154 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 00:20:12,155 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:20:12,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:20:12,155 INFO L82 PathProgramCache]: Analyzing trace with hash -1857996991, now seen corresponding path program 1 times [2020-10-28 00:20:12,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:20:12,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1422584381] [2020-10-28 00:20:12,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:20:12,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:20:12,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:12,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:12,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:12,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:12,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:13,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:14,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:20:14,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-28 00:20:14,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 00:20:14,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2414 [2020-10-28 00:20:14,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:20:14,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:20:14,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-28 00:20:14,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 00:20:14,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:20:14,923 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 00:20:14,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:20:14,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:20:14,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:14,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:20:14,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:20:14,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:20:14,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 00:20:14,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:20:14,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:20:14,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:20:14,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:20:14,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:20:14,964 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 00:20:14,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1422584381] [2020-10-28 00:20:14,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:20:14,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:20:14,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960641191] [2020-10-28 00:20:14,965 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:20:14,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:20:14,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:20:14,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:20:14,966 INFO L87 Difference]: Start difference. First operand 3549 states and 5495 transitions. Second operand 4 states. [2020-10-28 00:20:15,302 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-28 00:20:17,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:20:17,446 INFO L93 Difference]: Finished difference Result 9503 states and 14617 transitions. [2020-10-28 00:20:17,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:20:17,446 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 91 [2020-10-28 00:20:17,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:20:17,474 INFO L225 Difference]: With dead ends: 9503 [2020-10-28 00:20:17,474 INFO L226 Difference]: Without dead ends: 6764 [2020-10-28 00:20:17,482 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:20:17,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6764 states. [2020-10-28 00:20:17,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6764 to 6233. [2020-10-28 00:20:17,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6233 states. [2020-10-28 00:20:17,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6233 states to 6233 states and 9533 transitions. [2020-10-28 00:20:17,889 INFO L78 Accepts]: Start accepts. Automaton has 6233 states and 9533 transitions. Word has length 91 [2020-10-28 00:20:17,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:20:17,889 INFO L481 AbstractCegarLoop]: Abstraction has 6233 states and 9533 transitions. [2020-10-28 00:20:17,889 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:20:17,889 INFO L276 IsEmpty]: Start isEmpty. Operand 6233 states and 9533 transitions. [2020-10-28 00:20:17,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-28 00:20:17,904 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:20:17,904 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:20:17,905 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 00:20:17,905 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:20:17,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:20:17,905 INFO L82 PathProgramCache]: Analyzing trace with hash -420186545, now seen corresponding path program 1 times [2020-10-28 00:20:17,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:20:17,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [828369149] [2020-10-28 00:20:17,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:20:17,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:20:17,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:17,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:18,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:18,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:18,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:20:18,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-28 00:20:18,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 00:20:18,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 740 [2020-10-28 00:20:18,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:20:18,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:20:18,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-28 00:20:18,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 00:20:18,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:20:18,992 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 00:20:18,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:20:18,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:20:19,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:19,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:20:19,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:20:19,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:20:19,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 00:20:19,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:20:19,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:20:19,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:20:19,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:20:19,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:20:19,030 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 00:20:19,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [828369149] [2020-10-28 00:20:19,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:20:19,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:20:19,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117256577] [2020-10-28 00:20:19,032 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:20:19,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:20:19,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:20:19,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:20:19,033 INFO L87 Difference]: Start difference. First operand 6233 states and 9533 transitions. Second operand 4 states. [2020-10-28 00:20:21,032 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-28 00:20:21,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:20:21,507 INFO L93 Difference]: Finished difference Result 12816 states and 19516 transitions. [2020-10-28 00:20:21,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:20:21,508 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 92 [2020-10-28 00:20:21,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:20:21,538 INFO L225 Difference]: With dead ends: 12816 [2020-10-28 00:20:21,538 INFO L226 Difference]: Without dead ends: 8537 [2020-10-28 00:20:21,548 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:20:21,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8537 states. [2020-10-28 00:20:21,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8537 to 8534. [2020-10-28 00:20:21,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8534 states. [2020-10-28 00:20:21,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8534 states to 8534 states and 12910 transitions. [2020-10-28 00:20:21,986 INFO L78 Accepts]: Start accepts. Automaton has 8534 states and 12910 transitions. Word has length 92 [2020-10-28 00:20:21,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:20:21,987 INFO L481 AbstractCegarLoop]: Abstraction has 8534 states and 12910 transitions. [2020-10-28 00:20:21,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:20:21,987 INFO L276 IsEmpty]: Start isEmpty. Operand 8534 states and 12910 transitions. [2020-10-28 00:20:22,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-28 00:20:22,005 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:20:22,005 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:20:22,005 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 00:20:22,005 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:20:22,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:20:22,006 INFO L82 PathProgramCache]: Analyzing trace with hash -1519357746, now seen corresponding path program 1 times [2020-10-28 00:20:22,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:20:22,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1638553756] [2020-10-28 00:20:22,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:20:22,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:20:22,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:22,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:20:22,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 00:20:22,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:20:22,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-28 00:20:22,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:20:22,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:20:22,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 00:20:22,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 00:20:22,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:20:22,486 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 00:20:22,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:20:22,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:20:22,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:22,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:20:22,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:20:22,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:20:22,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 00:20:22,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:20:22,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:20:22,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:20:22,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:20:22,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:20:22,513 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 00:20:22,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1638553756] [2020-10-28 00:20:22,514 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:20:22,514 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:20:22,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727686551] [2020-10-28 00:20:22,514 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:20:22,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:20:22,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:20:22,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:20:22,515 INFO L87 Difference]: Start difference. First operand 8534 states and 12910 transitions. Second operand 5 states. [2020-10-28 00:20:24,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:20:24,258 INFO L93 Difference]: Finished difference Result 17030 states and 25750 transitions. [2020-10-28 00:20:24,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 00:20:24,259 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 93 [2020-10-28 00:20:24,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:20:24,273 INFO L225 Difference]: With dead ends: 17030 [2020-10-28 00:20:24,273 INFO L226 Difference]: Without dead ends: 8534 [2020-10-28 00:20:24,290 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:20:24,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8534 states. [2020-10-28 00:20:24,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8534 to 8534. [2020-10-28 00:20:24,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8534 states. [2020-10-28 00:20:24,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8534 states to 8534 states and 12878 transitions. [2020-10-28 00:20:24,842 INFO L78 Accepts]: Start accepts. Automaton has 8534 states and 12878 transitions. Word has length 93 [2020-10-28 00:20:24,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:20:24,842 INFO L481 AbstractCegarLoop]: Abstraction has 8534 states and 12878 transitions. [2020-10-28 00:20:24,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:20:24,842 INFO L276 IsEmpty]: Start isEmpty. Operand 8534 states and 12878 transitions. [2020-10-28 00:20:24,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-28 00:20:24,861 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:20:24,861 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:20:24,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 00:20:24,861 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:20:24,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:20:24,862 INFO L82 PathProgramCache]: Analyzing trace with hash 164178621, now seen corresponding path program 1 times [2020-10-28 00:20:24,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:20:24,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [366250898] [2020-10-28 00:20:24,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:20:24,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:20:24,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:24,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:24,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:25,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:25,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:25,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:29,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:20:29,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 00:20:29,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 00:20:29,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 00:20:29,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:20:29,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:20:29,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 00:20:29,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-28 00:20:29,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:20:30,205 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 00:20:30,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:20:30,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:20:30,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:30,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:20:30,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:20:30,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:20:30,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 00:20:30,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:20:30,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:20:30,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:20:30,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:20:30,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:20:30,248 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 00:20:30,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [366250898] [2020-10-28 00:20:30,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:20:30,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:20:30,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114953141] [2020-10-28 00:20:30,250 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:20:30,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:20:30,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:20:30,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:20:30,251 INFO L87 Difference]: Start difference. First operand 8534 states and 12878 transitions. Second operand 4 states. [2020-10-28 00:20:30,591 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 00:20:32,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:20:32,390 INFO L93 Difference]: Finished difference Result 13533 states and 20445 transitions. [2020-10-28 00:20:32,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:20:32,391 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 124 [2020-10-28 00:20:32,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:20:32,405 INFO L225 Difference]: With dead ends: 13533 [2020-10-28 00:20:32,405 INFO L226 Difference]: Without dead ends: 7229 [2020-10-28 00:20:32,417 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:20:32,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7229 states. [2020-10-28 00:20:32,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7229 to 7226. [2020-10-28 00:20:32,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7226 states. [2020-10-28 00:20:32,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7226 states to 7226 states and 10904 transitions. [2020-10-28 00:20:32,777 INFO L78 Accepts]: Start accepts. Automaton has 7226 states and 10904 transitions. Word has length 124 [2020-10-28 00:20:32,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:20:32,778 INFO L481 AbstractCegarLoop]: Abstraction has 7226 states and 10904 transitions. [2020-10-28 00:20:32,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:20:32,778 INFO L276 IsEmpty]: Start isEmpty. Operand 7226 states and 10904 transitions. [2020-10-28 00:20:32,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-28 00:20:32,786 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:20:32,786 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:20:32,786 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 00:20:32,786 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:20:32,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:20:32,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1958653362, now seen corresponding path program 1 times [2020-10-28 00:20:32,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:20:32,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1463711317] [2020-10-28 00:20:32,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:20:32,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:20:32,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:32,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:32,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:32,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:32,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:36,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:36,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:37,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:20:37,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-28 00:20:37,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 00:20:37,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-28 00:20:37,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:20:37,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:20:37,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 00:20:37,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-28 00:20:37,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:20:38,135 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 00:20:38,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:20:38,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:20:38,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:38,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:20:38,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:20:38,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:20:38,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 00:20:38,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:20:38,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:20:38,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:20:38,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:20:38,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:20:38,172 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 00:20:38,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1463711317] [2020-10-28 00:20:38,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:20:38,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:20:38,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351560759] [2020-10-28 00:20:38,173 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:20:38,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:20:38,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:20:38,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:20:38,174 INFO L87 Difference]: Start difference. First operand 7226 states and 10904 transitions. Second operand 4 states. [2020-10-28 00:20:38,506 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 00:20:40,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:20:40,268 INFO L93 Difference]: Finished difference Result 12417 states and 18751 transitions. [2020-10-28 00:20:40,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:20:40,269 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 125 [2020-10-28 00:20:40,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:20:40,283 INFO L225 Difference]: With dead ends: 12417 [2020-10-28 00:20:40,283 INFO L226 Difference]: Without dead ends: 6509 [2020-10-28 00:20:40,294 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:20:40,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6509 states. [2020-10-28 00:20:40,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6509 to 6506. [2020-10-28 00:20:40,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6506 states. [2020-10-28 00:20:40,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6506 states to 6506 states and 9808 transitions. [2020-10-28 00:20:40,695 INFO L78 Accepts]: Start accepts. Automaton has 6506 states and 9808 transitions. Word has length 125 [2020-10-28 00:20:40,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:20:40,696 INFO L481 AbstractCegarLoop]: Abstraction has 6506 states and 9808 transitions. [2020-10-28 00:20:40,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:20:40,696 INFO L276 IsEmpty]: Start isEmpty. Operand 6506 states and 9808 transitions. [2020-10-28 00:20:40,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-28 00:20:40,705 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:20:40,706 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:20:40,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 00:20:40,706 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:20:40,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:20:40,707 INFO L82 PathProgramCache]: Analyzing trace with hash -1878330664, now seen corresponding path program 1 times [2020-10-28 00:20:40,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:20:40,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1873498491] [2020-10-28 00:20:40,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:20:40,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:20:40,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:40,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:40,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:40,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:41,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:42,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:42,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:42,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:45,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:20:45,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-28 00:20:45,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 00:20:45,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 00:20:45,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:20:45,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:20:45,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-28 00:20:45,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-28 00:20:45,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:20:46,049 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 00:20:46,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:20:46,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:20:46,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:46,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:20:46,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:20:46,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:20:46,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-28 00:20:46,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:20:46,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:20:46,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:20:46,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:20:46,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:20:46,129 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 00:20:46,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1873498491] [2020-10-28 00:20:46,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:20:46,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:20:46,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217252105] [2020-10-28 00:20:46,130 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:20:46,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:20:46,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:20:46,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:20:46,131 INFO L87 Difference]: Start difference. First operand 6506 states and 9808 transitions. Second operand 4 states. [2020-10-28 00:20:46,464 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 00:20:48,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:20:48,040 INFO L93 Difference]: Finished difference Result 11753 states and 17751 transitions. [2020-10-28 00:20:48,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:20:48,042 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 126 [2020-10-28 00:20:48,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:20:48,053 INFO L225 Difference]: With dead ends: 11753 [2020-10-28 00:20:48,053 INFO L226 Difference]: Without dead ends: 6177 [2020-10-28 00:20:48,064 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:20:48,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6177 states. [2020-10-28 00:20:48,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6177 to 6174. [2020-10-28 00:20:48,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6174 states. [2020-10-28 00:20:48,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6174 states to 6174 states and 9308 transitions. [2020-10-28 00:20:48,453 INFO L78 Accepts]: Start accepts. Automaton has 6174 states and 9308 transitions. Word has length 126 [2020-10-28 00:20:48,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:20:48,453 INFO L481 AbstractCegarLoop]: Abstraction has 6174 states and 9308 transitions. [2020-10-28 00:20:48,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:20:48,454 INFO L276 IsEmpty]: Start isEmpty. Operand 6174 states and 9308 transitions. [2020-10-28 00:20:48,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-28 00:20:48,460 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:20:48,460 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:20:48,460 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 00:20:48,460 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:20:48,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:20:48,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1161752808, now seen corresponding path program 1 times [2020-10-28 00:20:48,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:20:48,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1088173371] [2020-10-28 00:20:48,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:20:48,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:20:48,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:48,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:48,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:48,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:48,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:49,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:49,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:51,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:51,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:51,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:51,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:51,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:53,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:20:53,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-28 00:20:53,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 00:20:53,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 00:20:53,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:20:53,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:20:53,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-10-28 00:20:53,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 00:20:53,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:20:53,806 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 00:20:53,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:20:53,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:20:53,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:53,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:20:53,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:20:53,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:20:53,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 00:20:53,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:20:53,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:20:53,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:20:53,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:20:53,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:20:53,852 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 00:20:53,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1088173371] [2020-10-28 00:20:53,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:20:53,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:20:53,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25599800] [2020-10-28 00:20:53,854 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:20:53,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:20:53,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:20:53,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:20:53,855 INFO L87 Difference]: Start difference. First operand 6174 states and 9308 transitions. Second operand 4 states. [2020-10-28 00:20:55,458 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 00:20:55,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:20:55,793 INFO L93 Difference]: Finished difference Result 10901 states and 16491 transitions. [2020-10-28 00:20:55,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:20:55,794 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2020-10-28 00:20:55,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:20:55,800 INFO L225 Difference]: With dead ends: 10901 [2020-10-28 00:20:55,800 INFO L226 Difference]: Without dead ends: 5657 [2020-10-28 00:20:55,811 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:20:55,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5657 states. [2020-10-28 00:20:56,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5657 to 5654. [2020-10-28 00:20:56,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5654 states. [2020-10-28 00:20:56,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5654 states to 5654 states and 8496 transitions. [2020-10-28 00:20:56,214 INFO L78 Accepts]: Start accepts. Automaton has 5654 states and 8496 transitions. Word has length 127 [2020-10-28 00:20:56,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:20:56,214 INFO L481 AbstractCegarLoop]: Abstraction has 5654 states and 8496 transitions. [2020-10-28 00:20:56,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:20:56,214 INFO L276 IsEmpty]: Start isEmpty. Operand 5654 states and 8496 transitions. [2020-10-28 00:20:56,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-28 00:20:56,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:20:56,220 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:20:56,220 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 00:20:56,220 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:20:56,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:20:56,221 INFO L82 PathProgramCache]: Analyzing trace with hash 1843610797, now seen corresponding path program 1 times [2020-10-28 00:20:56,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:20:56,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2026998595] [2020-10-28 00:20:56,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:20:56,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:20:56,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:56,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:56,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:56,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:56,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:56,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:57,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:57,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:57,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:58,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:20:58,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:01,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:21:01,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-28 00:21:01,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 00:21:01,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 00:21:01,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:21:01,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:21:01,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 00:21:01,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-28 00:21:01,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:21:01,563 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 00:21:01,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:21:01,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:21:01,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:01,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:21:01,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:21:01,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:21:01,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 00:21:01,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:21:01,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:21:01,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:21:01,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:21:01,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:21:01,600 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 00:21:01,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2026998595] [2020-10-28 00:21:01,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:21:01,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:21:01,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864087310] [2020-10-28 00:21:01,601 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:21:01,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:21:01,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:21:01,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:21:01,602 INFO L87 Difference]: Start difference. First operand 5654 states and 8496 transitions. Second operand 4 states. [2020-10-28 00:21:01,928 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 00:21:03,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:21:03,659 INFO L93 Difference]: Finished difference Result 10669 states and 16059 transitions. [2020-10-28 00:21:03,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:21:03,660 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2020-10-28 00:21:03,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:21:03,667 INFO L225 Difference]: With dead ends: 10669 [2020-10-28 00:21:03,667 INFO L226 Difference]: Without dead ends: 5505 [2020-10-28 00:21:03,676 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:21:03,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5505 states. [2020-10-28 00:21:03,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5505 to 5502. [2020-10-28 00:21:03,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5502 states. [2020-10-28 00:21:03,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5502 states to 5502 states and 8270 transitions. [2020-10-28 00:21:03,975 INFO L78 Accepts]: Start accepts. Automaton has 5502 states and 8270 transitions. Word has length 127 [2020-10-28 00:21:03,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:21:03,975 INFO L481 AbstractCegarLoop]: Abstraction has 5502 states and 8270 transitions. [2020-10-28 00:21:03,975 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:21:03,975 INFO L276 IsEmpty]: Start isEmpty. Operand 5502 states and 8270 transitions. [2020-10-28 00:21:03,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-28 00:21:03,979 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:21:03,979 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:21:03,979 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 00:21:03,980 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:21:03,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:21:03,980 INFO L82 PathProgramCache]: Analyzing trace with hash -217868537, now seen corresponding path program 1 times [2020-10-28 00:21:03,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:21:03,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1177582097] [2020-10-28 00:21:03,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:21:04,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:21:04,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:04,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:04,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:04,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:04,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:04,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:04,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:04,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:04,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:05,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:05,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:05,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:05,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:05,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:05,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:05,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:05,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:05,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:08,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:21:08,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-28 00:21:08,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-28 00:21:08,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4786 [2020-10-28 00:21:08,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:21:08,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:21:08,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 00:21:08,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-28 00:21:08,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:21:09,092 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 00:21:09,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:21:09,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:21:09,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:09,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:21:09,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:21:09,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:21:09,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 00:21:09,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:21:09,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:21:09,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:21:09,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:21:09,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:21:09,136 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 00:21:09,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1177582097] [2020-10-28 00:21:09,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:21:09,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:21:09,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045648188] [2020-10-28 00:21:09,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:21:09,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:21:09,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:21:09,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:21:09,139 INFO L87 Difference]: Start difference. First operand 5502 states and 8270 transitions. Second operand 4 states. [2020-10-28 00:21:09,515 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 00:21:11,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:21:11,279 INFO L93 Difference]: Finished difference Result 10531 states and 15857 transitions. [2020-10-28 00:21:11,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:21:11,280 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 128 [2020-10-28 00:21:11,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:21:11,285 INFO L225 Difference]: With dead ends: 10531 [2020-10-28 00:21:11,285 INFO L226 Difference]: Without dead ends: 5436 [2020-10-28 00:21:11,293 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:21:11,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5436 states. [2020-10-28 00:21:11,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5436 to 5433. [2020-10-28 00:21:11,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5433 states. [2020-10-28 00:21:11,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5433 states to 5433 states and 8169 transitions. [2020-10-28 00:21:11,541 INFO L78 Accepts]: Start accepts. Automaton has 5433 states and 8169 transitions. Word has length 128 [2020-10-28 00:21:11,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:21:11,541 INFO L481 AbstractCegarLoop]: Abstraction has 5433 states and 8169 transitions. [2020-10-28 00:21:11,541 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:21:11,541 INFO L276 IsEmpty]: Start isEmpty. Operand 5433 states and 8169 transitions. [2020-10-28 00:21:11,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-28 00:21:11,545 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:21:11,545 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:21:11,545 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 00:21:11,545 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:21:11,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:21:11,546 INFO L82 PathProgramCache]: Analyzing trace with hash 29580052, now seen corresponding path program 1 times [2020-10-28 00:21:11,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:21:11,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1592452005] [2020-10-28 00:21:11,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:21:11,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:21:11,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:11,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:11,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:11,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:11,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:11,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:11,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:12,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:12,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:12,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:12,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:12,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:12,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:12,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:12,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:13,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:13,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:13,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:16,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:21:16,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-28 00:21:16,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-28 00:21:16,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 00:21:16,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:21:16,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:21:16,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-28 00:21:16,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 00:21:16,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:21:16,889 WARN L193 SmtUtils]: Spent 271.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 00:21:16,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:21:16,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:21:16,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:16,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:21:16,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:21:16,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:21:16,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 00:21:16,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:21:16,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:21:16,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:21:16,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:21:16,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:21:16,919 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 00:21:16,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1592452005] [2020-10-28 00:21:16,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:21:16,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:21:16,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256637972] [2020-10-28 00:21:16,920 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:21:16,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:21:16,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:21:16,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:21:16,921 INFO L87 Difference]: Start difference. First operand 5433 states and 8169 transitions. Second operand 4 states. [2020-10-28 00:21:17,250 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 00:21:19,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:21:19,021 INFO L93 Difference]: Finished difference Result 12901 states and 19388 transitions. [2020-10-28 00:21:19,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:21:19,021 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2020-10-28 00:21:19,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:21:19,029 INFO L225 Difference]: With dead ends: 12901 [2020-10-28 00:21:19,030 INFO L226 Difference]: Without dead ends: 7780 [2020-10-28 00:21:19,037 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:21:19,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7780 states. [2020-10-28 00:21:19,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7780 to 7777. [2020-10-28 00:21:19,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7777 states. [2020-10-28 00:21:19,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7777 states to 7777 states and 11629 transitions. [2020-10-28 00:21:19,441 INFO L78 Accepts]: Start accepts. Automaton has 7777 states and 11629 transitions. Word has length 129 [2020-10-28 00:21:19,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:21:19,441 INFO L481 AbstractCegarLoop]: Abstraction has 7777 states and 11629 transitions. [2020-10-28 00:21:19,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:21:19,441 INFO L276 IsEmpty]: Start isEmpty. Operand 7777 states and 11629 transitions. [2020-10-28 00:21:19,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-28 00:21:19,445 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:21:19,446 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:21:19,446 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 00:21:19,446 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:21:19,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:21:19,446 INFO L82 PathProgramCache]: Analyzing trace with hash -2002896449, now seen corresponding path program 1 times [2020-10-28 00:21:19,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:21:19,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1121780806] [2020-10-28 00:21:19,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:21:19,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:21:19,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:19,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:19,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:19,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:19,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:20,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:20,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:20,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:20,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:20,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:20,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:20,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:20,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:21,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:21,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:21,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:21,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:21,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:21,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:21,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:21,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:21,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:21,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:21,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:22,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:22,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:22,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:22,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:22,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:22,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:22,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:22,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:22,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:22,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:24,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:21:24,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-28 00:21:24,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 34 [2020-10-28 00:21:24,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 00:21:24,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:21:24,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:21:24,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 50 [2020-10-28 00:21:24,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 00:21:24,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:21:24,798 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 00:21:24,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:21:24,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:21:24,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:24,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:21:24,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:21:24,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:21:24,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 00:21:24,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:21:24,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:21:24,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:21:24,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:21:24,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:21:24,832 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 00:21:24,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1121780806] [2020-10-28 00:21:24,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:21:24,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:21:24,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967802096] [2020-10-28 00:21:24,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:21:24,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:21:24,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:21:24,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:21:24,834 INFO L87 Difference]: Start difference. First operand 7777 states and 11629 transitions. Second operand 4 states. [2020-10-28 00:21:26,341 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 00:21:26,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:21:26,494 INFO L93 Difference]: Finished difference Result 10844 states and 16216 transitions. [2020-10-28 00:21:26,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:21:26,495 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2020-10-28 00:21:26,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:21:26,500 INFO L225 Difference]: With dead ends: 10844 [2020-10-28 00:21:26,500 INFO L226 Difference]: Without dead ends: 3489 [2020-10-28 00:21:26,511 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:21:26,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3489 states. [2020-10-28 00:21:26,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3489 to 3411. [2020-10-28 00:21:26,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3411 states. [2020-10-28 00:21:26,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3411 states to 3411 states and 5067 transitions. [2020-10-28 00:21:26,772 INFO L78 Accepts]: Start accepts. Automaton has 3411 states and 5067 transitions. Word has length 129 [2020-10-28 00:21:26,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:21:26,772 INFO L481 AbstractCegarLoop]: Abstraction has 3411 states and 5067 transitions. [2020-10-28 00:21:26,772 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:21:26,772 INFO L276 IsEmpty]: Start isEmpty. Operand 3411 states and 5067 transitions. [2020-10-28 00:21:26,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-28 00:21:26,776 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:21:26,777 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:21:26,777 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 00:21:26,777 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:21:26,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:21:26,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1881046295, now seen corresponding path program 1 times [2020-10-28 00:21:26,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:21:26,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1491785096] [2020-10-28 00:21:26,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:21:26,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:21:26,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:26,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:26,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:27,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:27,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:27,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:28,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:28,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:28,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:28,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:28,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:28,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:28,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:28,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:28,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:28,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:29,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:29,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:31,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:21:31,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-28 00:21:31,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-28 00:21:31,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 00:21:31,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:21:31,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 00:21:31,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 00:21:31,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-28 00:21:31,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:21:32,168 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 00:21:32,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:21:32,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:21:32,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:32,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:21:32,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:21:32,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:21:32,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 00:21:32,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:21:32,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:21:32,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:21:32,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:21:32,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:21:32,211 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 00:21:32,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1491785096] [2020-10-28 00:21:32,211 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:21:32,211 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 00:21:32,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437670626] [2020-10-28 00:21:32,212 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 00:21:32,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:21:32,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 00:21:32,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-28 00:21:32,213 INFO L87 Difference]: Start difference. First operand 3411 states and 5067 transitions. Second operand 8 states. [2020-10-28 00:21:32,624 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 194 [2020-10-28 00:21:34,610 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 192 [2020-10-28 00:21:34,939 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 00:21:35,269 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 00:21:35,638 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 00:21:36,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:21:36,183 INFO L93 Difference]: Finished difference Result 18955 states and 28212 transitions. [2020-10-28 00:21:36,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 00:21:36,184 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 130 [2020-10-28 00:21:36,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:21:36,199 INFO L225 Difference]: With dead ends: 18955 [2020-10-28 00:21:36,199 INFO L226 Difference]: Without dead ends: 15652 [2020-10-28 00:21:36,207 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2020-10-28 00:21:36,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15652 states. [2020-10-28 00:21:36,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15652 to 4915. [2020-10-28 00:21:36,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4915 states. [2020-10-28 00:21:36,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4915 states to 4915 states and 7294 transitions. [2020-10-28 00:21:36,583 INFO L78 Accepts]: Start accepts. Automaton has 4915 states and 7294 transitions. Word has length 130 [2020-10-28 00:21:36,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:21:36,583 INFO L481 AbstractCegarLoop]: Abstraction has 4915 states and 7294 transitions. [2020-10-28 00:21:36,583 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 00:21:36,583 INFO L276 IsEmpty]: Start isEmpty. Operand 4915 states and 7294 transitions. [2020-10-28 00:21:36,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-28 00:21:36,587 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:21:36,587 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:21:36,587 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 00:21:36,587 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:21:36,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:21:36,588 INFO L82 PathProgramCache]: Analyzing trace with hash 445807883, now seen corresponding path program 1 times [2020-10-28 00:21:36,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:21:36,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [612310285] [2020-10-28 00:21:36,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:21:36,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:21:36,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:36,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:36,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:36,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:36,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:36,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:37,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:37,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:37,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:37,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:37,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:37,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:37,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:37,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:38,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:38,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:38,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:38,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:38,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:38,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:38,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:38,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:38,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:38,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:38,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:38,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:38,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:39,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:39,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:39,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:39,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:39,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:39,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:39,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:39,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:40,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:40,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:40,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:41,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:21:41,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-28 00:21:41,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 38 [2020-10-28 00:21:41,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 00:21:41,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:21:41,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:21:41,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-28 00:21:41,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-28 00:21:41,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:21:41,970 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 00:21:41,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:21:41,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:21:41,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:41,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:21:41,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:21:41,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:21:41,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 00:21:41,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:21:41,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:21:41,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:21:41,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:21:41,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:21:42,002 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 00:21:42,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [612310285] [2020-10-28 00:21:42,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:21:42,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:21:42,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5371479] [2020-10-28 00:21:42,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:21:42,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:21:42,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:21:42,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:21:42,004 INFO L87 Difference]: Start difference. First operand 4915 states and 7294 transitions. Second operand 4 states. [2020-10-28 00:21:42,353 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 00:21:44,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:21:44,108 INFO L93 Difference]: Finished difference Result 13751 states and 20334 transitions. [2020-10-28 00:21:44,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:21:44,108 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 130 [2020-10-28 00:21:44,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:21:44,120 INFO L225 Difference]: With dead ends: 13751 [2020-10-28 00:21:44,120 INFO L226 Difference]: Without dead ends: 9170 [2020-10-28 00:21:44,126 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:21:44,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9170 states. [2020-10-28 00:21:44,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9170 to 9167. [2020-10-28 00:21:44,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9167 states. [2020-10-28 00:21:44,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9167 states to 9167 states and 13444 transitions. [2020-10-28 00:21:44,796 INFO L78 Accepts]: Start accepts. Automaton has 9167 states and 13444 transitions. Word has length 130 [2020-10-28 00:21:44,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:21:44,797 INFO L481 AbstractCegarLoop]: Abstraction has 9167 states and 13444 transitions. [2020-10-28 00:21:44,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:21:44,797 INFO L276 IsEmpty]: Start isEmpty. Operand 9167 states and 13444 transitions. [2020-10-28 00:21:44,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-28 00:21:44,804 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:21:44,804 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:21:44,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 00:21:44,804 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:21:44,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:21:44,805 INFO L82 PathProgramCache]: Analyzing trace with hash 2090545012, now seen corresponding path program 1 times [2020-10-28 00:21:44,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:21:44,805 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [242024407] [2020-10-28 00:21:44,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:21:44,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:21:44,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:44,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:44,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:44,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:45,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:45,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:45,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:45,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:45,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:45,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:45,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:45,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:45,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:45,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:45,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:46,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:46,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:46,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:46,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:46,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:46,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:49,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:21:49,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-28 00:21:49,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-28 00:21:49,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 00:21:49,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:21:49,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:21:49,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 90 [2020-10-28 00:21:49,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 00:21:49,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:21:50,151 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 00:21:50,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:21:50,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:21:50,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:50,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:21:50,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:21:50,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:21:50,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 00:21:50,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:21:50,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:21:50,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:21:50,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:21:50,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:21:50,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:21:50,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [242024407] [2020-10-28 00:21:50,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:21:50,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:21:50,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573708820] [2020-10-28 00:21:50,193 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:21:50,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:21:50,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:21:50,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:21:50,194 INFO L87 Difference]: Start difference. First operand 9167 states and 13444 transitions. Second operand 4 states. [2020-10-28 00:21:50,530 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 00:21:52,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:21:52,922 INFO L93 Difference]: Finished difference Result 26026 states and 38015 transitions. [2020-10-28 00:21:52,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:21:52,923 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 130 [2020-10-28 00:21:52,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:21:52,938 INFO L225 Difference]: With dead ends: 26026 [2020-10-28 00:21:52,938 INFO L226 Difference]: Without dead ends: 17199 [2020-10-28 00:21:52,945 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:21:52,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17199 states. [2020-10-28 00:21:54,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17199 to 17196. [2020-10-28 00:21:54,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17196 states. [2020-10-28 00:21:54,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17196 states to 17196 states and 24903 transitions. [2020-10-28 00:21:54,239 INFO L78 Accepts]: Start accepts. Automaton has 17196 states and 24903 transitions. Word has length 130 [2020-10-28 00:21:54,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:21:54,239 INFO L481 AbstractCegarLoop]: Abstraction has 17196 states and 24903 transitions. [2020-10-28 00:21:54,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:21:54,239 INFO L276 IsEmpty]: Start isEmpty. Operand 17196 states and 24903 transitions. [2020-10-28 00:21:54,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-28 00:21:54,248 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:21:54,248 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:21:54,248 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-28 00:21:54,248 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:21:54,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:21:54,249 INFO L82 PathProgramCache]: Analyzing trace with hash -195758544, now seen corresponding path program 1 times [2020-10-28 00:21:54,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:21:54,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [343682631] [2020-10-28 00:21:54,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:21:54,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:21:54,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:54,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:54,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:54,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:54,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:54,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:55,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:55,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:55,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:55,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:55,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:56,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:56,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:56,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:56,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:56,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:56,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:56,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:56,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:56,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:56,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:58,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:58,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:58,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:58,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:58,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:59,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:59,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:59,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:59,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:21:59,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-28 00:21:59,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 29 [2020-10-28 00:21:59,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 00:21:59,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:21:59,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:21:59,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-28 00:21:59,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 00:21:59,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:21:59,602 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 00:21:59,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:21:59,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:21:59,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:59,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:21:59,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:21:59,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:21:59,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 00:21:59,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:21:59,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:21:59,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:21:59,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:21:59,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:21:59,632 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 00:21:59,632 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [343682631] [2020-10-28 00:21:59,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:21:59,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:21:59,633 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252899503] [2020-10-28 00:21:59,633 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:21:59,633 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:21:59,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:21:59,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:21:59,634 INFO L87 Difference]: Start difference. First operand 17196 states and 24903 transitions. Second operand 4 states. [2020-10-28 00:21:59,961 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 00:22:03,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:22:03,398 INFO L93 Difference]: Finished difference Result 48722 states and 70267 transitions. [2020-10-28 00:22:03,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:22:03,401 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 130 [2020-10-28 00:22:03,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:22:03,439 INFO L225 Difference]: With dead ends: 48722 [2020-10-28 00:22:03,440 INFO L226 Difference]: Without dead ends: 31779 [2020-10-28 00:22:03,461 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:22:03,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31779 states. [2020-10-28 00:22:06,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31779 to 31776. [2020-10-28 00:22:06,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31776 states. [2020-10-28 00:22:06,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31776 states to 31776 states and 45419 transitions. [2020-10-28 00:22:06,191 INFO L78 Accepts]: Start accepts. Automaton has 31776 states and 45419 transitions. Word has length 130 [2020-10-28 00:22:06,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:22:06,191 INFO L481 AbstractCegarLoop]: Abstraction has 31776 states and 45419 transitions. [2020-10-28 00:22:06,191 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:22:06,191 INFO L276 IsEmpty]: Start isEmpty. Operand 31776 states and 45419 transitions. [2020-10-28 00:22:06,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-28 00:22:06,209 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:22:06,209 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:22:06,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-28 00:22:06,209 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:22:06,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:22:06,211 INFO L82 PathProgramCache]: Analyzing trace with hash -827114177, now seen corresponding path program 1 times [2020-10-28 00:22:06,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:22:06,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1613267707] [2020-10-28 00:22:06,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:22:06,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:22:06,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:06,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:06,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:06,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:06,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:06,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:07,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:09,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:09,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:09,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:09,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:09,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:09,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:09,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:09,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:09,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:10,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:10,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:10,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:10,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:10,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:11,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:22:11,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-28 00:22:11,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-28 00:22:11,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 00:22:11,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:22:11,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:22:11,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-28 00:22:11,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 00:22:11,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:22:11,546 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 00:22:11,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:22:11,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:22:11,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:11,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:22:11,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:22:11,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:22:11,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 00:22:11,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:22:11,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:22:11,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:22:11,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:22:11,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:22:11,579 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 00:22:11,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1613267707] [2020-10-28 00:22:11,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:22:11,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:22:11,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532344183] [2020-10-28 00:22:11,580 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:22:11,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:22:11,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:22:11,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:22:11,580 INFO L87 Difference]: Start difference. First operand 31776 states and 45419 transitions. Second operand 4 states. [2020-10-28 00:22:15,822 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-28 00:22:18,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:22:18,209 INFO L93 Difference]: Finished difference Result 90579 states and 128810 transitions. [2020-10-28 00:22:18,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:22:18,210 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 133 [2020-10-28 00:22:18,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:22:18,275 INFO L225 Difference]: With dead ends: 90579 [2020-10-28 00:22:18,275 INFO L226 Difference]: Without dead ends: 59244 [2020-10-28 00:22:18,311 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:22:18,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59244 states. [2020-10-28 00:22:23,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59244 to 59241. [2020-10-28 00:22:23,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59241 states. [2020-10-28 00:22:23,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59241 states to 59241 states and 83502 transitions. [2020-10-28 00:22:23,165 INFO L78 Accepts]: Start accepts. Automaton has 59241 states and 83502 transitions. Word has length 133 [2020-10-28 00:22:23,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:22:23,165 INFO L481 AbstractCegarLoop]: Abstraction has 59241 states and 83502 transitions. [2020-10-28 00:22:23,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:22:23,165 INFO L276 IsEmpty]: Start isEmpty. Operand 59241 states and 83502 transitions. [2020-10-28 00:22:23,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-28 00:22:23,203 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:22:23,203 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:22:23,203 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-28 00:22:23,203 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:22:23,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:22:23,204 INFO L82 PathProgramCache]: Analyzing trace with hash 275193807, now seen corresponding path program 1 times [2020-10-28 00:22:23,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:22:23,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [224926699] [2020-10-28 00:22:23,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:22:23,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:22:23,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:23,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:23,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:23,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:23,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:24,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:24,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:24,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:27,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:27,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:27,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:27,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:27,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:27,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:28,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:28,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:28,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:28,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:22:28,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-28 00:22:28,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-28 00:22:28,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 00:22:28,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:22:28,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:22:28,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-28 00:22:28,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 00:22:28,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:22:28,551 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 00:22:28,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:22:28,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:22:28,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:28,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:22:28,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:22:28,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:22:28,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 00:22:28,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:22:28,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:22:28,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:22:28,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:22:28,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:22:28,582 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 00:22:28,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [224926699] [2020-10-28 00:22:28,583 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:22:28,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:22:28,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361423915] [2020-10-28 00:22:28,583 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:22:28,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:22:28,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:22:28,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:22:28,584 INFO L87 Difference]: Start difference. First operand 59241 states and 83502 transitions. Second operand 4 states. [2020-10-28 00:22:34,086 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-28 00:22:38,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:22:38,914 INFO L93 Difference]: Finished difference Result 167257 states and 234184 transitions. [2020-10-28 00:22:38,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:22:38,914 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 133 [2020-10-28 00:22:38,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:22:39,045 INFO L225 Difference]: With dead ends: 167257 [2020-10-28 00:22:39,045 INFO L226 Difference]: Without dead ends: 109706 [2020-10-28 00:22:39,095 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:22:39,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109706 states. [2020-10-28 00:22:48,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109706 to 109703. [2020-10-28 00:22:48,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109703 states. [2020-10-28 00:22:48,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109703 states to 109703 states and 151890 transitions. [2020-10-28 00:22:48,619 INFO L78 Accepts]: Start accepts. Automaton has 109703 states and 151890 transitions. Word has length 133 [2020-10-28 00:22:48,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:22:48,619 INFO L481 AbstractCegarLoop]: Abstraction has 109703 states and 151890 transitions. [2020-10-28 00:22:48,619 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:22:48,619 INFO L276 IsEmpty]: Start isEmpty. Operand 109703 states and 151890 transitions. [2020-10-28 00:22:48,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-28 00:22:48,915 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:22:48,915 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:22:48,915 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-28 00:22:48,915 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:22:48,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:22:48,916 INFO L82 PathProgramCache]: Analyzing trace with hash -649956364, now seen corresponding path program 1 times [2020-10-28 00:22:48,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:22:48,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1754808135] [2020-10-28 00:22:48,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:22:48,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:22:48,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:48,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:49,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:49,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:49,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:49,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:49,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:49,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:53,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:22:53,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-28 00:22:53,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 00:22:53,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 00:22:53,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:22:53,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 00:22:53,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-28 00:22:53,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-28 00:22:53,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:22:54,287 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 00:22:54,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:22:54,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:22:54,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:54,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:22:54,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:22:54,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:22:54,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 00:22:54,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:22:54,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:22:54,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:22:54,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:22:54,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:22:54,318 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 00:22:54,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1754808135] [2020-10-28 00:22:54,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:22:54,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 00:22:54,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990180256] [2020-10-28 00:22:54,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 00:22:54,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:22:54,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 00:22:54,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:22:54,320 INFO L87 Difference]: Start difference. First operand 109703 states and 151890 transitions. Second operand 6 states.