/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 05:19:01,636 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 05:19:01,640 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 05:19:01,700 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 05:19:01,701 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 05:19:01,708 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 05:19:01,710 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 05:19:01,715 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 05:19:01,718 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 05:19:01,725 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 05:19:01,726 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 05:19:01,727 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 05:19:01,728 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 05:19:01,731 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 05:19:01,733 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 05:19:01,734 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 05:19:01,736 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 05:19:01,739 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 05:19:01,756 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 05:19:01,764 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 05:19:01,765 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 05:19:01,767 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 05:19:01,769 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 05:19:01,771 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 05:19:01,777 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 05:19:01,777 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 05:19:01,777 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 05:19:01,779 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 05:19:01,780 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 05:19:01,781 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 05:19:01,781 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 05:19:01,782 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 05:19:01,784 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 05:19:01,785 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 05:19:01,786 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 05:19:01,786 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 05:19:01,787 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 05:19:01,787 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 05:19:01,787 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 05:19:01,788 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 05:19:01,789 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 05:19:01,796 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 05:19:01,843 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 05:19:01,843 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 05:19:01,847 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 05:19:01,847 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 05:19:01,847 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 05:19:01,848 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 05:19:01,848 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 05:19:01,848 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 05:19:01,848 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 05:19:01,848 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 05:19:01,850 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 05:19:01,850 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 05:19:01,850 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 05:19:01,850 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 05:19:01,850 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 05:19:01,851 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 05:19:01,851 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 05:19:01,851 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 05:19:01,851 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 05:19:01,851 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 05:19:01,852 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 05:19:01,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:19:01,852 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 05:19:01,852 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 05:19:01,853 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 05:19:01,853 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 05:19:01,853 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 05:19:01,853 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 05:19:01,853 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 05:19:01,854 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 05:19:02,317 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 05:19:02,366 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 05:19:02,369 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 05:19:02,371 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 05:19:02,371 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 05:19:02,373 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c [2020-10-27 05:19:02,466 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a708cd33f/aa8561b631c4488cbfc18fb85681dcde/FLAG509021e34 [2020-10-27 05:19:03,302 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 05:19:03,303 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.5.1.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c [2020-10-27 05:19:03,320 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a708cd33f/aa8561b631c4488cbfc18fb85681dcde/FLAG509021e34 [2020-10-27 05:19:03,510 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a708cd33f/aa8561b631c4488cbfc18fb85681dcde [2020-10-27 05:19:03,515 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 05:19:03,522 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 05:19:03,524 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 05:19:03,525 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 05:19:03,529 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 05:19:03,530 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:19:03" (1/1) ... [2020-10-27 05:19:03,534 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ab36c03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:19:03, skipping insertion in model container [2020-10-27 05:19:03,534 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:19:03" (1/1) ... [2020-10-27 05:19:03,543 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 05:19:03,600 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 05:19:04,124 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:19:04,154 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 05:19:04,319 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:19:04,354 INFO L208 MainTranslator]: Completed translation [2020-10-27 05:19:04,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:19:04 WrapperNode [2020-10-27 05:19:04,356 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 05:19:04,358 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 05:19:04,358 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 05:19:04,358 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 05:19:04,373 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:19:04" (1/1) ... [2020-10-27 05:19:04,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:19:04" (1/1) ... [2020-10-27 05:19:04,419 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:19:04" (1/1) ... [2020-10-27 05:19:04,420 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:19:04" (1/1) ... [2020-10-27 05:19:04,493 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:19:04" (1/1) ... [2020-10-27 05:19:04,522 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:19:04" (1/1) ... [2020-10-27 05:19:04,531 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:19:04" (1/1) ... [2020-10-27 05:19:04,544 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 05:19:04,545 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 05:19:04,545 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 05:19:04,545 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 05:19:04,548 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:19:04" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:19:04,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 05:19:04,643 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 05:19:04,643 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 05:19:04,644 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 05:19:04,644 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 05:19:04,645 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 05:19:04,645 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 05:19:04,645 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 05:19:04,645 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 05:19:04,645 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 05:19:04,646 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 05:19:04,646 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-27 05:19:04,647 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 05:19:04,647 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 05:19:04,647 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 05:19:04,648 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 05:19:04,648 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 05:19:04,648 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 05:19:04,648 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 05:19:04,648 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 05:19:04,649 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-27 05:19:04,649 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 05:19:04,649 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 05:19:04,649 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 05:19:04,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 05:19:04,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 05:19:04,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 05:19:04,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 05:19:04,650 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 05:19:04,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 05:19:06,371 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 05:19:06,371 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 05:19:06,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:19:06 BoogieIcfgContainer [2020-10-27 05:19:06,374 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 05:19:06,376 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 05:19:06,376 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 05:19:06,380 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 05:19:06,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:19:03" (1/3) ... [2020-10-27 05:19:06,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e98757c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:19:06, skipping insertion in model container [2020-10-27 05:19:06,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:19:04" (2/3) ... [2020-10-27 05:19:06,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e98757c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:19:06, skipping insertion in model container [2020-10-27 05:19:06,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:19:06" (3/3) ... [2020-10-27 05:19:06,383 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.1.ufo.UNBOUNDED.pals.c.p+lhb-reducer.c [2020-10-27 05:19:06,396 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 05:19:06,402 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 05:19:06,415 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 05:19:06,445 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 05:19:06,445 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 05:19:06,446 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 05:19:06,446 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 05:19:06,446 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 05:19:06,446 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 05:19:06,446 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 05:19:06,446 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 05:19:06,471 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states. [2020-10-27 05:19:06,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-27 05:19:06,490 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:19:06,491 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:19:06,491 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:19:06,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:19:06,497 INFO L82 PathProgramCache]: Analyzing trace with hash -1837561670, now seen corresponding path program 1 times [2020-10-27 05:19:06,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:19:06,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [722469781] [2020-10-27 05:19:06,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:19:06,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:19:06,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:07,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:07,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:07,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:07,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:07,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:07,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:07,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:07,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:08,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:09,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:10,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:11,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:19:11,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-27 05:19:11,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 05:19:11,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-27 05:19:11,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:19:11,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:19:11,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 05:19:11,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 05:19:11,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 05:19:12,368 WARN L193 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 05:19:12,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:19:12,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:19:12,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:12,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:19:12,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:19:12,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:19:12,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 05:19:12,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:19:12,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:19:12,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:19:12,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:19:12,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 05:19:12,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:19:12,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [722469781] [2020-10-27 05:19:12,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:19:12,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:19:12,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251154819] [2020-10-27 05:19:12,505 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:19:12,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:19:12,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:19:12,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:19:12,534 INFO L87 Difference]: Start difference. First operand 345 states. Second operand 5 states. [2020-10-27 05:19:14,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:19:14,658 INFO L93 Difference]: Finished difference Result 652 states and 1054 transitions. [2020-10-27 05:19:14,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:19:14,660 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2020-10-27 05:19:14,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:19:14,689 INFO L225 Difference]: With dead ends: 652 [2020-10-27 05:19:14,689 INFO L226 Difference]: Without dead ends: 338 [2020-10-27 05:19:14,702 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 [2020-10-27 05:19:14,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2020-10-27 05:19:14,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 338. [2020-10-27 05:19:14,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 338 states. [2020-10-27 05:19:14,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 518 transitions. [2020-10-27 05:19:14,823 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 518 transitions. Word has length 132 [2020-10-27 05:19:14,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:19:14,824 INFO L481 AbstractCegarLoop]: Abstraction has 338 states and 518 transitions. [2020-10-27 05:19:14,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:19:14,824 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 518 transitions. [2020-10-27 05:19:14,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-27 05:19:14,829 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:19:14,829 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:19:14,830 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 05:19:14,830 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:19:14,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:19:14,831 INFO L82 PathProgramCache]: Analyzing trace with hash 455970888, now seen corresponding path program 1 times [2020-10-27 05:19:14,831 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:19:14,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [907095453] [2020-10-27 05:19:14,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:19:14,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:19:14,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:14,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:14,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:15,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:15,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:15,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:15,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:15,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:15,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:15,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:16,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:17,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:18,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:18,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:18,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:19,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:19:19,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-27 05:19:19,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 05:19:19,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 05:19:19,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:19:19,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 05:19:19,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:19:19,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 05:19:19,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 05:19:20,294 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 05:19:20,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:19:20,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:19:20,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:20,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:19:20,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:19:20,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:19:20,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 05:19:20,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:19:20,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:19:20,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:19:20,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:19:20,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:19:20,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:19:20,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [907095453] [2020-10-27 05:19:20,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:19:20,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:19:20,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739324306] [2020-10-27 05:19:20,403 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 05:19:20,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:19:20,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 05:19:20,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 05:19:20,405 INFO L87 Difference]: Start difference. First operand 338 states and 518 transitions. Second operand 6 states. [2020-10-27 05:19:20,744 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 05:19:23,307 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 05:19:23,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:19:23,315 INFO L93 Difference]: Finished difference Result 913 states and 1435 transitions. [2020-10-27 05:19:23,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:19:23,316 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 162 [2020-10-27 05:19:23,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:19:23,322 INFO L225 Difference]: With dead ends: 913 [2020-10-27 05:19:23,323 INFO L226 Difference]: Without dead ends: 623 [2020-10-27 05:19:23,324 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-27 05:19:23,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2020-10-27 05:19:23,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 620. [2020-10-27 05:19:23,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 620 states. [2020-10-27 05:19:23,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 965 transitions. [2020-10-27 05:19:23,405 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 965 transitions. Word has length 162 [2020-10-27 05:19:23,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:19:23,406 INFO L481 AbstractCegarLoop]: Abstraction has 620 states and 965 transitions. [2020-10-27 05:19:23,406 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 05:19:23,406 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 965 transitions. [2020-10-27 05:19:23,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-27 05:19:23,410 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:19:23,411 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:19:23,411 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 05:19:23,411 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:19:23,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:19:23,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1946136727, now seen corresponding path program 1 times [2020-10-27 05:19:23,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:19:23,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2117585186] [2020-10-27 05:19:23,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:19:23,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:19:23,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:23,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:23,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:23,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:23,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:23,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:23,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:23,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:23,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:24,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:24,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:24,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:24,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:28,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:19:28,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-27 05:19:28,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 05:19:28,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 05:19:28,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:19:28,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 05:19:28,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:19:28,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 05:19:28,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 05:19:28,898 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 05:19:28,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:19:28,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:19:28,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:28,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:19:28,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:19:28,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:19:28,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 05:19:28,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:19:28,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:19:28,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:19:28,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:19:28,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:19:29,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:19:29,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2117585186] [2020-10-27 05:19:29,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:19:29,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 05:19:29,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905989058] [2020-10-27 05:19:29,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 05:19:29,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:19:29,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 05:19:29,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:19:29,019 INFO L87 Difference]: Start difference. First operand 620 states and 965 transitions. Second operand 11 states. [2020-10-27 05:19:29,411 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 05:19:34,808 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 05:19:35,153 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 05:19:35,462 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-27 05:19:35,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:19:35,479 INFO L93 Difference]: Finished difference Result 3505 states and 5574 transitions. [2020-10-27 05:19:35,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 05:19:35,480 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 162 [2020-10-27 05:19:35,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:19:35,499 INFO L225 Difference]: With dead ends: 3505 [2020-10-27 05:19:35,499 INFO L226 Difference]: Without dead ends: 3071 [2020-10-27 05:19:35,502 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=160, Invalid=542, Unknown=0, NotChecked=0, Total=702 [2020-10-27 05:19:35,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3071 states. [2020-10-27 05:19:35,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3071 to 687. [2020-10-27 05:19:35,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 687 states. [2020-10-27 05:19:35,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 1069 transitions. [2020-10-27 05:19:35,587 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 1069 transitions. Word has length 162 [2020-10-27 05:19:35,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:19:35,588 INFO L481 AbstractCegarLoop]: Abstraction has 687 states and 1069 transitions. [2020-10-27 05:19:35,588 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 05:19:35,588 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 1069 transitions. [2020-10-27 05:19:35,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-27 05:19:35,592 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:19:35,592 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:19:35,592 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 05:19:35,593 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:19:35,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:19:35,593 INFO L82 PathProgramCache]: Analyzing trace with hash 84967786, now seen corresponding path program 1 times [2020-10-27 05:19:35,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:19:35,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1496665429] [2020-10-27 05:19:35,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:19:35,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:19:35,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:35,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:35,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:35,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:35,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:35,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:35,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:35,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:36,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:36,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:36,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:36,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:40,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:19:40,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-27 05:19:40,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 05:19:40,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 05:19:40,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:19:40,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 05:19:40,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-27 05:19:40,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-27 05:19:40,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:19:41,057 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 05:19:41,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:19:41,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:19:41,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:41,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:19:41,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:19:41,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:19:41,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 05:19:41,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:19:41,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:19:41,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:19:41,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:19:41,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:19:41,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:19:41,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1496665429] [2020-10-27 05:19:41,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:19:41,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 05:19:41,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976606828] [2020-10-27 05:19:41,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 05:19:41,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:19:41,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 05:19:41,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-27 05:19:41,170 INFO L87 Difference]: Start difference. First operand 687 states and 1069 transitions. Second operand 8 states. [2020-10-27 05:19:41,539 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 05:19:47,452 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-27 05:19:47,817 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 05:19:48,173 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 05:19:48,501 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-27 05:19:48,962 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 05:19:49,316 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 05:19:49,628 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-27 05:19:49,925 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-27 05:19:49,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:19:49,946 INFO L93 Difference]: Finished difference Result 5930 states and 9392 transitions. [2020-10-27 05:19:49,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 05:19:49,947 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 163 [2020-10-27 05:19:49,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:19:49,975 INFO L225 Difference]: With dead ends: 5930 [2020-10-27 05:19:49,975 INFO L226 Difference]: Without dead ends: 5433 [2020-10-27 05:19:49,978 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=165, Invalid=387, Unknown=0, NotChecked=0, Total=552 [2020-10-27 05:19:49,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5433 states. [2020-10-27 05:19:50,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5433 to 1302. [2020-10-27 05:19:50,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1302 states. [2020-10-27 05:19:50,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1302 states to 1302 states and 2027 transitions. [2020-10-27 05:19:50,143 INFO L78 Accepts]: Start accepts. Automaton has 1302 states and 2027 transitions. Word has length 163 [2020-10-27 05:19:50,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:19:50,144 INFO L481 AbstractCegarLoop]: Abstraction has 1302 states and 2027 transitions. [2020-10-27 05:19:50,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 05:19:50,144 INFO L276 IsEmpty]: Start isEmpty. Operand 1302 states and 2027 transitions. [2020-10-27 05:19:50,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-27 05:19:50,149 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:19:50,149 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:19:50,150 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 05:19:50,150 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:19:50,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:19:50,151 INFO L82 PathProgramCache]: Analyzing trace with hash -1704364613, now seen corresponding path program 1 times [2020-10-27 05:19:50,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:19:50,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [919175507] [2020-10-27 05:19:50,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:19:50,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:19:50,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:50,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:50,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:50,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:50,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:50,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:50,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:50,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:50,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:50,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:50,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:50,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:53,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:55,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:19:55,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-27 05:19:55,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 05:19:55,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-27 05:19:55,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:19:55,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 05:19:55,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:19:55,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-27 05:19:55,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:19:55,644 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 05:19:55,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:19:55,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:19:55,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:55,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:19:55,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:19:55,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:19:55,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 05:19:55,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:19:55,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:19:55,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:19:55,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:19:55,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:19:55,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:19:55,758 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [919175507] [2020-10-27 05:19:55,759 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:19:55,759 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 05:19:55,759 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826863711] [2020-10-27 05:19:55,759 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 05:19:55,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:19:55,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 05:19:55,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:19:55,762 INFO L87 Difference]: Start difference. First operand 1302 states and 2027 transitions. Second operand 7 states. [2020-10-27 05:19:56,081 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-27 05:19:58,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:19:58,074 INFO L93 Difference]: Finished difference Result 2791 states and 4367 transitions. [2020-10-27 05:19:58,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 05:19:58,075 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 165 [2020-10-27 05:19:58,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:19:58,085 INFO L225 Difference]: With dead ends: 2791 [2020-10-27 05:19:58,085 INFO L226 Difference]: Without dead ends: 1626 [2020-10-27 05:19:58,090 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:19:58,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1626 states. [2020-10-27 05:19:58,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1626 to 1290. [2020-10-27 05:19:58,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1290 states. [2020-10-27 05:19:58,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1290 states to 1290 states and 1997 transitions. [2020-10-27 05:19:58,230 INFO L78 Accepts]: Start accepts. Automaton has 1290 states and 1997 transitions. Word has length 165 [2020-10-27 05:19:58,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:19:58,231 INFO L481 AbstractCegarLoop]: Abstraction has 1290 states and 1997 transitions. [2020-10-27 05:19:58,231 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 05:19:58,231 INFO L276 IsEmpty]: Start isEmpty. Operand 1290 states and 1997 transitions. [2020-10-27 05:19:58,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-27 05:19:58,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:19:58,236 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:19:58,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 05:19:58,236 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:19:58,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:19:58,237 INFO L82 PathProgramCache]: Analyzing trace with hash 23596335, now seen corresponding path program 1 times [2020-10-27 05:19:58,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:19:58,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2059101927] [2020-10-27 05:19:58,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:19:58,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:19:58,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:58,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:58,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:58,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:58,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:58,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:58,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:58,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:58,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:58,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:19:59,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:01,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:01,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:01,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:01,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:01,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:02,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:03,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:03,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:03,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:20:03,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-27 05:20:03,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-27 05:20:03,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 05:20:03,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:20:03,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 05:20:03,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:20:03,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-27 05:20:03,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:20:03,782 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 05:20:03,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:20:03,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:20:03,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:03,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:20:03,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:20:03,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:20:03,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 05:20:03,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:20:03,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:20:03,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:20:03,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:20:03,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:20:03,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:20:03,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2059101927] [2020-10-27 05:20:03,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:20:03,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 05:20:03,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568690001] [2020-10-27 05:20:03,927 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 05:20:03,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:20:03,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 05:20:03,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:20:03,928 INFO L87 Difference]: Start difference. First operand 1290 states and 1997 transitions. Second operand 11 states. [2020-10-27 05:20:04,321 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 05:20:10,917 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 05:20:11,241 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 05:20:11,546 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-27 05:20:11,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:20:11,585 INFO L93 Difference]: Finished difference Result 7308 states and 11478 transitions. [2020-10-27 05:20:11,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-27 05:20:11,585 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 165 [2020-10-27 05:20:11,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:20:11,617 INFO L225 Difference]: With dead ends: 7308 [2020-10-27 05:20:11,617 INFO L226 Difference]: Without dead ends: 6677 [2020-10-27 05:20:11,621 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 477 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=354, Invalid=1368, Unknown=0, NotChecked=0, Total=1722 [2020-10-27 05:20:11,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6677 states. [2020-10-27 05:20:11,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6677 to 1434. [2020-10-27 05:20:11,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1434 states. [2020-10-27 05:20:11,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1434 states to 1434 states and 2217 transitions. [2020-10-27 05:20:11,858 INFO L78 Accepts]: Start accepts. Automaton has 1434 states and 2217 transitions. Word has length 165 [2020-10-27 05:20:11,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:20:11,862 INFO L481 AbstractCegarLoop]: Abstraction has 1434 states and 2217 transitions. [2020-10-27 05:20:11,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 05:20:11,862 INFO L276 IsEmpty]: Start isEmpty. Operand 1434 states and 2217 transitions. [2020-10-27 05:20:11,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-27 05:20:11,867 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:20:11,868 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:20:11,868 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 05:20:11,868 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:20:11,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:20:11,869 INFO L82 PathProgramCache]: Analyzing trace with hash -99773511, now seen corresponding path program 1 times [2020-10-27 05:20:11,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:20:11,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [463208271] [2020-10-27 05:20:11,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:20:11,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:20:11,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:11,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:11,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:12,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:12,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:12,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:12,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:12,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:12,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:12,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:12,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:12,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:14,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:16,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:20:16,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-27 05:20:16,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 05:20:16,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 05:20:16,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:20:16,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 05:20:16,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:20:16,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-27 05:20:16,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:20:17,327 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 05:20:17,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:20:17,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:20:17,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:17,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:20:17,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:20:17,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:20:17,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 05:20:17,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:20:17,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:20:17,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:20:17,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:20:17,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:20:17,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:20:17,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [463208271] [2020-10-27 05:20:17,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:20:17,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 05:20:17,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682474231] [2020-10-27 05:20:17,415 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 05:20:17,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:20:17,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 05:20:17,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:20:17,416 INFO L87 Difference]: Start difference. First operand 1434 states and 2217 transitions. Second operand 7 states. [2020-10-27 05:20:17,749 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-27 05:20:19,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:20:19,683 INFO L93 Difference]: Finished difference Result 2629 states and 4075 transitions. [2020-10-27 05:20:19,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 05:20:19,684 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 166 [2020-10-27 05:20:19,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:20:19,692 INFO L225 Difference]: With dead ends: 2629 [2020-10-27 05:20:19,692 INFO L226 Difference]: Without dead ends: 1440 [2020-10-27 05:20:19,696 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 05:20:19,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1440 states. [2020-10-27 05:20:19,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1440 to 1422. [2020-10-27 05:20:19,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1422 states. [2020-10-27 05:20:19,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1422 states to 1422 states and 2187 transitions. [2020-10-27 05:20:19,901 INFO L78 Accepts]: Start accepts. Automaton has 1422 states and 2187 transitions. Word has length 166 [2020-10-27 05:20:19,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:20:19,902 INFO L481 AbstractCegarLoop]: Abstraction has 1422 states and 2187 transitions. [2020-10-27 05:20:19,902 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 05:20:19,902 INFO L276 IsEmpty]: Start isEmpty. Operand 1422 states and 2187 transitions. [2020-10-27 05:20:19,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-27 05:20:19,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:20:19,907 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:20:19,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 05:20:19,908 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:20:19,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:20:19,908 INFO L82 PathProgramCache]: Analyzing trace with hash 1437164659, now seen corresponding path program 1 times [2020-10-27 05:20:19,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:20:19,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [791156720] [2020-10-27 05:20:19,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:20:19,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:20:19,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:19,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:20,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:20,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:20,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:20,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:20,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:20,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:20,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:20,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:20,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:22,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:22,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:22,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:22,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:24,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:20:24,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-27 05:20:24,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 05:20:24,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 05:20:24,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:20:24,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 05:20:24,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-27 05:20:24,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 05:20:24,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:20:25,286 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 05:20:25,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:20:25,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:20:25,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:25,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:20:25,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:20:25,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:20:25,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 05:20:25,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:20:25,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:20:25,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:20:25,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:20:25,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:20:25,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:20:25,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [791156720] [2020-10-27 05:20:25,382 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:20:25,382 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 05:20:25,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003010097] [2020-10-27 05:20:25,383 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 05:20:25,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:20:25,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 05:20:25,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-27 05:20:25,384 INFO L87 Difference]: Start difference. First operand 1422 states and 2187 transitions. Second operand 8 states. [2020-10-27 05:20:25,756 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-27 05:20:33,024 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-27 05:20:33,489 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-27 05:20:33,850 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 05:20:34,222 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-27 05:20:34,544 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-27 05:20:34,929 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-27 05:20:35,288 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 05:20:35,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:20:35,345 INFO L93 Difference]: Finished difference Result 8032 states and 12512 transitions. [2020-10-27 05:20:35,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 05:20:35,346 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 166 [2020-10-27 05:20:35,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:20:35,377 INFO L225 Difference]: With dead ends: 8032 [2020-10-27 05:20:35,378 INFO L226 Difference]: Without dead ends: 7080 [2020-10-27 05:20:35,382 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=151, Invalid=355, Unknown=0, NotChecked=0, Total=506 [2020-10-27 05:20:35,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7080 states. [2020-10-27 05:20:35,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7080 to 3135. [2020-10-27 05:20:35,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3135 states. [2020-10-27 05:20:35,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3135 states to 3135 states and 4839 transitions. [2020-10-27 05:20:35,857 INFO L78 Accepts]: Start accepts. Automaton has 3135 states and 4839 transitions. Word has length 166 [2020-10-27 05:20:35,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:20:35,857 INFO L481 AbstractCegarLoop]: Abstraction has 3135 states and 4839 transitions. [2020-10-27 05:20:35,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 05:20:35,858 INFO L276 IsEmpty]: Start isEmpty. Operand 3135 states and 4839 transitions. [2020-10-27 05:20:35,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-27 05:20:35,867 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:20:35,867 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:20:35,868 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 05:20:35,868 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:20:35,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:20:35,868 INFO L82 PathProgramCache]: Analyzing trace with hash 48176231, now seen corresponding path program 1 times [2020-10-27 05:20:35,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:20:35,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1955405409] [2020-10-27 05:20:35,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:20:35,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:20:35,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:35,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:35,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:35,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:36,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:36,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:36,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:36,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:36,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:36,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:36,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:39,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:39,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:39,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:39,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:40,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:20:40,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-27 05:20:40,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 05:20:40,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-27 05:20:40,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:20:40,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 05:20:40,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-27 05:20:40,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 05:20:40,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:20:41,275 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 05:20:41,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:20:41,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:20:41,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:41,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:20:41,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:20:41,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:20:41,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 05:20:41,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:20:41,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:20:41,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:20:41,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:20:41,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:20:41,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:20:41,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1955405409] [2020-10-27 05:20:41,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:20:41,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 05:20:41,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968372017] [2020-10-27 05:20:41,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 05:20:41,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:20:41,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 05:20:41,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-27 05:20:41,342 INFO L87 Difference]: Start difference. First operand 3135 states and 4839 transitions. Second operand 8 states. [2020-10-27 05:20:41,715 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-27 05:20:49,476 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 171 [2020-10-27 05:20:49,816 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 05:20:50,159 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-27 05:20:50,474 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-27 05:20:50,836 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-27 05:20:51,173 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 05:20:51,492 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-27 05:20:51,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:20:51,553 INFO L93 Difference]: Finished difference Result 10554 states and 16379 transitions. [2020-10-27 05:20:51,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 05:20:51,559 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 166 [2020-10-27 05:20:51,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:20:51,586 INFO L225 Difference]: With dead ends: 10554 [2020-10-27 05:20:51,586 INFO L226 Difference]: Without dead ends: 9249 [2020-10-27 05:20:51,591 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=151, Invalid=355, Unknown=0, NotChecked=0, Total=506 [2020-10-27 05:20:51,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9249 states. [2020-10-27 05:20:52,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9249 to 4908. [2020-10-27 05:20:52,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4908 states. [2020-10-27 05:20:52,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4908 states to 4908 states and 7590 transitions. [2020-10-27 05:20:52,235 INFO L78 Accepts]: Start accepts. Automaton has 4908 states and 7590 transitions. Word has length 166 [2020-10-27 05:20:52,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:20:52,235 INFO L481 AbstractCegarLoop]: Abstraction has 4908 states and 7590 transitions. [2020-10-27 05:20:52,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 05:20:52,236 INFO L276 IsEmpty]: Start isEmpty. Operand 4908 states and 7590 transitions. [2020-10-27 05:20:52,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-27 05:20:52,249 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:20:52,249 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:20:52,250 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 05:20:52,250 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:20:52,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:20:52,250 INFO L82 PathProgramCache]: Analyzing trace with hash -419237661, now seen corresponding path program 1 times [2020-10-27 05:20:52,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:20:52,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [135573803] [2020-10-27 05:20:52,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:20:52,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:20:52,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:52,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:52,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:52,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:52,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:52,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:52,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:52,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:52,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:52,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:52,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:53,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:53,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:53,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:54,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:57,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:20:57,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-27 05:20:57,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 05:20:57,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 05:20:57,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:20:57,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 05:20:57,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:20:57,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 05:20:57,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:20:57,709 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 05:20:57,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:20:57,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:20:57,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:20:57,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:20:57,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:20:57,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:20:57,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 05:20:57,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:20:57,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:20:57,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:20:57,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:20:57,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:20:57,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:20:57,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [135573803] [2020-10-27 05:20:57,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:20:57,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 05:20:57,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92828932] [2020-10-27 05:20:57,778 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 05:20:57,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:20:57,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 05:20:57,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:20:57,779 INFO L87 Difference]: Start difference. First operand 4908 states and 7590 transitions. Second operand 7 states. [2020-10-27 05:20:58,119 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-27 05:21:01,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:21:01,729 INFO L93 Difference]: Finished difference Result 11086 states and 17298 transitions. [2020-10-27 05:21:01,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 05:21:01,730 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 166 [2020-10-27 05:21:01,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:21:01,745 INFO L225 Difference]: With dead ends: 11086 [2020-10-27 05:21:01,745 INFO L226 Difference]: Without dead ends: 7014 [2020-10-27 05:21:01,754 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-27 05:21:01,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7014 states. [2020-10-27 05:21:02,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7014 to 4670. [2020-10-27 05:21:02,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4670 states. [2020-10-27 05:21:02,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4670 states to 4670 states and 7223 transitions. [2020-10-27 05:21:02,410 INFO L78 Accepts]: Start accepts. Automaton has 4670 states and 7223 transitions. Word has length 166 [2020-10-27 05:21:02,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:21:02,410 INFO L481 AbstractCegarLoop]: Abstraction has 4670 states and 7223 transitions. [2020-10-27 05:21:02,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 05:21:02,410 INFO L276 IsEmpty]: Start isEmpty. Operand 4670 states and 7223 transitions. [2020-10-27 05:21:02,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-27 05:21:02,424 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:21:02,424 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:21:02,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 05:21:02,424 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:21:02,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:21:02,425 INFO L82 PathProgramCache]: Analyzing trace with hash -337817157, now seen corresponding path program 1 times [2020-10-27 05:21:02,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:21:02,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1832796721] [2020-10-27 05:21:02,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:21:02,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:21:02,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:02,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:02,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:02,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:02,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:02,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:02,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:02,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:02,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:02,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:02,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:02,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:04,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:07,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:21:07,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-27 05:21:07,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 05:21:07,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 05:21:07,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:21:07,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 05:21:07,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:21:07,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-27 05:21:07,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:21:07,844 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 05:21:07,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:21:07,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:21:07,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:07,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:21:07,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:21:07,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:21:07,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 05:21:07,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:21:07,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:21:07,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:21:07,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:21:07,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:21:07,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:21:07,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1832796721] [2020-10-27 05:21:07,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:21:07,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 05:21:07,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668383036] [2020-10-27 05:21:07,968 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 05:21:07,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:21:07,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 05:21:07,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-27 05:21:07,969 INFO L87 Difference]: Start difference. First operand 4670 states and 7223 transitions. Second operand 8 states. [2020-10-27 05:21:08,321 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-27 05:21:14,442 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 05:21:14,852 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-27 05:21:15,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:21:15,009 INFO L93 Difference]: Finished difference Result 25331 states and 39395 transitions. [2020-10-27 05:21:15,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 05:21:15,010 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 168 [2020-10-27 05:21:15,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:21:15,054 INFO L225 Difference]: With dead ends: 25331 [2020-10-27 05:21:15,055 INFO L226 Difference]: Without dead ends: 21127 [2020-10-27 05:21:15,069 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-10-27 05:21:15,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21127 states. [2020-10-27 05:21:16,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21127 to 5022. [2020-10-27 05:21:16,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5022 states. [2020-10-27 05:21:16,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5022 states to 5022 states and 7631 transitions. [2020-10-27 05:21:16,096 INFO L78 Accepts]: Start accepts. Automaton has 5022 states and 7631 transitions. Word has length 168 [2020-10-27 05:21:16,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:21:16,097 INFO L481 AbstractCegarLoop]: Abstraction has 5022 states and 7631 transitions. [2020-10-27 05:21:16,097 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 05:21:16,097 INFO L276 IsEmpty]: Start isEmpty. Operand 5022 states and 7631 transitions. [2020-10-27 05:21:16,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-27 05:21:16,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:21:16,109 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:21:16,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 05:21:16,109 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:21:16,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:21:16,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1071680081, now seen corresponding path program 1 times [2020-10-27 05:21:16,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:21:16,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1555484504] [2020-10-27 05:21:16,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:21:16,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:21:16,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:16,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:16,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:16,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:16,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:16,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:16,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:16,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:16,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:16,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:16,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:16,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:18,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:21,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:21:21,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-27 05:21:21,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 05:21:21,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 05:21:21,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:21:21,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 05:21:21,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:21:21,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-27 05:21:21,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:21:21,627 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 05:21:21,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:21:21,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:21:21,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:21,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:21:21,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:21:21,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:21:21,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 05:21:21,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:21:21,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:21:21,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:21:21,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:21:21,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:21:21,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:21:21,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1555484504] [2020-10-27 05:21:21,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:21:21,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 05:21:21,707 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872465806] [2020-10-27 05:21:21,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 05:21:21,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:21:21,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 05:21:21,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-27 05:21:21,709 INFO L87 Difference]: Start difference. First operand 5022 states and 7631 transitions. Second operand 8 states. [2020-10-27 05:21:22,067 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-27 05:21:27,574 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-27 05:21:27,933 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 05:21:28,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:21:28,084 INFO L93 Difference]: Finished difference Result 20527 states and 31291 transitions. [2020-10-27 05:21:28,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 05:21:28,084 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 168 [2020-10-27 05:21:28,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:21:28,115 INFO L225 Difference]: With dead ends: 20527 [2020-10-27 05:21:28,115 INFO L226 Difference]: Without dead ends: 16487 [2020-10-27 05:21:28,128 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-10-27 05:21:28,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16487 states. [2020-10-27 05:21:29,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16487 to 5686. [2020-10-27 05:21:29,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5686 states. [2020-10-27 05:21:29,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5686 states to 5686 states and 8495 transitions. [2020-10-27 05:21:29,155 INFO L78 Accepts]: Start accepts. Automaton has 5686 states and 8495 transitions. Word has length 168 [2020-10-27 05:21:29,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:21:29,155 INFO L481 AbstractCegarLoop]: Abstraction has 5686 states and 8495 transitions. [2020-10-27 05:21:29,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 05:21:29,155 INFO L276 IsEmpty]: Start isEmpty. Operand 5686 states and 8495 transitions. [2020-10-27 05:21:29,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-27 05:21:29,169 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:21:29,169 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:21:29,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 05:21:29,169 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:21:29,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:21:29,170 INFO L82 PathProgramCache]: Analyzing trace with hash 1428973392, now seen corresponding path program 1 times [2020-10-27 05:21:29,170 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:21:29,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1086284568] [2020-10-27 05:21:29,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:21:29,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:21:29,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:29,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:29,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:29,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:29,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:29,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:29,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:29,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:29,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:29,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:29,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:30,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:30,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:30,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:31,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:34,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:21:34,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-27 05:21:34,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 05:21:34,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 05:21:34,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:21:34,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 05:21:34,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:21:34,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-27 05:21:34,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:21:34,751 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 05:21:34,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:21:34,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:21:34,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:34,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:21:34,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:21:34,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:21:34,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 05:21:34,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:21:34,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:21:34,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:21:34,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:21:34,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:21:34,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:21:34,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1086284568] [2020-10-27 05:21:34,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:21:34,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 05:21:34,836 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016564282] [2020-10-27 05:21:34,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 05:21:34,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:21:34,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 05:21:34,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-10-27 05:21:34,837 INFO L87 Difference]: Start difference. First operand 5686 states and 8495 transitions. Second operand 13 states. [2020-10-27 05:21:35,235 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 05:21:54,192 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-27 05:21:54,686 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 05:21:55,036 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 173 [2020-10-27 05:21:55,558 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 05:21:55,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:21:55,736 INFO L93 Difference]: Finished difference Result 43434 states and 65338 transitions. [2020-10-27 05:21:55,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-10-27 05:21:55,737 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 168 [2020-10-27 05:21:55,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:21:55,804 INFO L225 Difference]: With dead ends: 43434 [2020-10-27 05:21:55,805 INFO L226 Difference]: Without dead ends: 38041 [2020-10-27 05:21:55,825 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1039 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=652, Invalid=2540, Unknown=0, NotChecked=0, Total=3192 [2020-10-27 05:21:55,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38041 states. [2020-10-27 05:21:57,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38041 to 7546. [2020-10-27 05:21:57,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7546 states. [2020-10-27 05:21:57,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7546 states to 7546 states and 11288 transitions. [2020-10-27 05:21:57,686 INFO L78 Accepts]: Start accepts. Automaton has 7546 states and 11288 transitions. Word has length 168 [2020-10-27 05:21:57,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:21:57,686 INFO L481 AbstractCegarLoop]: Abstraction has 7546 states and 11288 transitions. [2020-10-27 05:21:57,686 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 05:21:57,686 INFO L276 IsEmpty]: Start isEmpty. Operand 7546 states and 11288 transitions. [2020-10-27 05:21:57,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-27 05:21:57,698 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:21:57,698 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:21:57,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 05:21:57,698 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:21:57,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:21:57,698 INFO L82 PathProgramCache]: Analyzing trace with hash -777800789, now seen corresponding path program 1 times [2020-10-27 05:21:57,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:21:57,699 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [225724558] [2020-10-27 05:21:57,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:21:57,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:21:57,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:57,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:57,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:57,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:57,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:57,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:57,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:57,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:57,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:57,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:58,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:58,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:21:59,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:02,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:22:02,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-27 05:22:02,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 05:22:02,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 05:22:02,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:22:02,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 05:22:02,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:22:02,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 05:22:02,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:22:03,196 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 05:22:03,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:22:03,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:22:03,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:03,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:22:03,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:22:03,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:22:03,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 05:22:03,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:22:03,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:22:03,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:22:03,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:22:03,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:22:03,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:22:03,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [225724558] [2020-10-27 05:22:03,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:22:03,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 05:22:03,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213209644] [2020-10-27 05:22:03,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 05:22:03,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:22:03,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 05:22:03,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-27 05:22:03,314 INFO L87 Difference]: Start difference. First operand 7546 states and 11288 transitions. Second operand 8 states. [2020-10-27 05:22:03,661 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-27 05:22:10,130 WARN L193 SmtUtils]: Spent 330.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-27 05:22:10,534 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 05:22:10,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:22:10,773 INFO L93 Difference]: Finished difference Result 22426 states and 33647 transitions. [2020-10-27 05:22:10,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 05:22:10,773 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 168 [2020-10-27 05:22:10,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:22:10,796 INFO L225 Difference]: With dead ends: 22426 [2020-10-27 05:22:10,796 INFO L226 Difference]: Without dead ends: 18296 [2020-10-27 05:22:10,807 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-10-27 05:22:10,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18296 states. [2020-10-27 05:22:12,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18296 to 5994. [2020-10-27 05:22:12,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5994 states. [2020-10-27 05:22:12,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5994 states to 5994 states and 8849 transitions. [2020-10-27 05:22:12,093 INFO L78 Accepts]: Start accepts. Automaton has 5994 states and 8849 transitions. Word has length 168 [2020-10-27 05:22:12,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:22:12,093 INFO L481 AbstractCegarLoop]: Abstraction has 5994 states and 8849 transitions. [2020-10-27 05:22:12,093 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 05:22:12,093 INFO L276 IsEmpty]: Start isEmpty. Operand 5994 states and 8849 transitions. [2020-10-27 05:22:12,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-27 05:22:12,102 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:22:12,102 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:22:12,102 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 05:22:12,102 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:22:12,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:22:12,103 INFO L82 PathProgramCache]: Analyzing trace with hash -1072849988, now seen corresponding path program 1 times [2020-10-27 05:22:12,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:22:12,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1950433805] [2020-10-27 05:22:12,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:22:12,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:22:12,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:12,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:12,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:12,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:12,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:12,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:12,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:12,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:12,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:12,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:12,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:13,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:17,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:22:17,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-27 05:22:17,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 05:22:17,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 05:22:17,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:22:17,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 05:22:17,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:22:17,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-27 05:22:17,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:22:17,502 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 05:22:17,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:22:17,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:22:17,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:17,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:22:17,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:22:17,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:22:17,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 05:22:17,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:22:17,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:22:17,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:22:17,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:22:17,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:22:17,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:22:17,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1950433805] [2020-10-27 05:22:17,583 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:22:17,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 05:22:17,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891079726] [2020-10-27 05:22:17,584 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 05:22:17,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:22:17,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 05:22:17,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:22:17,585 INFO L87 Difference]: Start difference. First operand 5994 states and 8849 transitions. Second operand 7 states. [2020-10-27 05:22:17,973 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 174 [2020-10-27 05:22:21,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:22:21,314 INFO L93 Difference]: Finished difference Result 10638 states and 15745 transitions. [2020-10-27 05:22:21,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 05:22:21,315 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 168 [2020-10-27 05:22:21,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:22:21,321 INFO L225 Difference]: With dead ends: 10638 [2020-10-27 05:22:21,321 INFO L226 Difference]: Without dead ends: 5617 [2020-10-27 05:22:21,330 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-27 05:22:21,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5617 states. [2020-10-27 05:22:22,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5617 to 4921. [2020-10-27 05:22:22,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4921 states. [2020-10-27 05:22:22,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4921 states to 4921 states and 7292 transitions. [2020-10-27 05:22:22,459 INFO L78 Accepts]: Start accepts. Automaton has 4921 states and 7292 transitions. Word has length 168 [2020-10-27 05:22:22,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:22:22,459 INFO L481 AbstractCegarLoop]: Abstraction has 4921 states and 7292 transitions. [2020-10-27 05:22:22,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 05:22:22,459 INFO L276 IsEmpty]: Start isEmpty. Operand 4921 states and 7292 transitions. [2020-10-27 05:22:22,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-27 05:22:22,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:22:22,467 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:22:22,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 05:22:22,467 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:22:22,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:22:22,467 INFO L82 PathProgramCache]: Analyzing trace with hash 703272512, now seen corresponding path program 1 times [2020-10-27 05:22:22,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:22:22,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [588378442] [2020-10-27 05:22:22,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:22:22,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:22:22,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:22,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:22,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:22,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:22,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:22,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:22,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:22,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:22,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:22,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:22,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:23,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:23,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:23,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:25,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:25,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:25,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:25,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:27,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:22:27,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-27 05:22:27,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-27 05:22:27,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 05:22:27,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:22:27,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 05:22:27,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:22:27,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-27 05:22:27,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:22:27,994 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2020-10-27 05:22:27,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:22:28,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:22:28,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:22:28,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:22:28,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:22:28,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:22:28,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 05:22:28,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:22:28,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:22:28,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:22:28,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:22:28,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:22:28,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:22:28,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [588378442] [2020-10-27 05:22:28,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:22:28,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 05:22:28,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569359892] [2020-10-27 05:22:28,067 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 05:22:28,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:22:28,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 05:22:28,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-10-27 05:22:28,068 INFO L87 Difference]: Start difference. First operand 4921 states and 7292 transitions. Second operand 12 states. [2020-10-27 05:22:28,446 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 174