/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 17:49:13,452 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 17:49:13,455 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 17:49:13,493 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 17:49:13,494 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 17:49:13,496 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 17:49:13,497 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 17:49:13,500 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 17:49:13,502 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 17:49:13,503 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 17:49:13,504 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 17:49:13,506 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 17:49:13,506 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 17:49:13,508 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 17:49:13,509 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 17:49:13,511 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 17:49:13,512 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 17:49:13,513 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 17:49:13,522 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 17:49:13,525 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 17:49:13,526 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 17:49:13,528 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 17:49:13,529 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 17:49:13,530 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 17:49:13,539 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 17:49:13,540 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 17:49:13,540 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 17:49:13,541 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 17:49:13,548 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 17:49:13,552 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 17:49:13,553 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 17:49:13,554 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 17:49:13,555 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 17:49:13,560 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 17:49:13,561 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 17:49:13,561 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 17:49:13,562 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 17:49:13,563 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 17:49:13,563 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 17:49:13,565 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 17:49:13,567 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 17:49:13,568 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 17:49:13,627 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 17:49:13,628 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 17:49:13,630 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 17:49:13,631 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 17:49:13,633 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 17:49:13,633 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 17:49:13,633 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 17:49:13,633 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 17:49:13,633 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 17:49:13,634 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 17:49:13,635 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 17:49:13,635 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 17:49:13,635 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 17:49:13,635 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 17:49:13,636 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 17:49:13,636 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 17:49:13,636 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 17:49:13,636 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 17:49:13,637 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 17:49:13,637 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 17:49:13,637 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 17:49:13,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 17:49:13,637 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 17:49:13,638 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 17:49:13,638 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 17:49:13,638 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 17:49:13,639 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 17:49:13,639 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 17:49:13,639 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 17:49:13,639 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 17:49:14,071 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 17:49:14,122 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 17:49:14,127 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 17:49:14,129 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 17:49:14,130 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 17:49:14,131 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c [2020-10-28 17:49:14,213 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d4c4af919/6618811db5a04d49aa83b21523020495/FLAGcfe7314e2 [2020-10-28 17:49:14,920 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 17:49:14,921 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c [2020-10-28 17:49:14,933 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d4c4af919/6618811db5a04d49aa83b21523020495/FLAGcfe7314e2 [2020-10-28 17:49:15,227 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d4c4af919/6618811db5a04d49aa83b21523020495 [2020-10-28 17:49:15,230 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 17:49:15,238 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 17:49:15,240 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 17:49:15,240 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 17:49:15,244 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 17:49:15,245 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 05:49:15" (1/1) ... [2020-10-28 17:49:15,249 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e3e3a71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:49:15, skipping insertion in model container [2020-10-28 17:49:15,249 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 05:49:15" (1/1) ... [2020-10-28 17:49:15,258 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 17:49:15,289 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 17:49:15,528 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 17:49:15,540 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 17:49:15,591 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 17:49:15,613 INFO L208 MainTranslator]: Completed translation [2020-10-28 17:49:15,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:49:15 WrapperNode [2020-10-28 17:49:15,613 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 17:49:15,615 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 17:49:15,615 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 17:49:15,615 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 17:49:15,678 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:49:15" (1/1) ... [2020-10-28 17:49:15,678 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:49:15" (1/1) ... [2020-10-28 17:49:15,695 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:49:15" (1/1) ... [2020-10-28 17:49:15,695 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:49:15" (1/1) ... [2020-10-28 17:49:15,708 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:49:15" (1/1) ... [2020-10-28 17:49:15,717 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:49:15" (1/1) ... [2020-10-28 17:49:15,721 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:49:15" (1/1) ... [2020-10-28 17:49:15,726 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 17:49:15,727 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 17:49:15,727 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 17:49:15,727 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 17:49:15,728 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:49:15" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 17:49:15,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 17:49:15,826 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 17:49:15,827 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 17:49:15,827 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-28 17:49:15,827 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-28 17:49:15,828 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-28 17:49:15,828 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-28 17:49:15,828 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-28 17:49:15,829 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 17:49:15,829 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-28 17:49:15,830 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 17:49:15,831 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 17:49:15,831 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 17:49:15,831 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 17:49:15,831 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 17:49:15,832 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 17:49:15,832 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 17:49:15,833 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 17:49:15,833 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 17:49:15,833 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 17:49:15,833 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 17:49:15,833 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 17:49:15,833 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 17:49:15,834 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 17:49:15,834 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 17:49:15,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 17:49:15,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 17:49:15,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 17:49:15,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 17:49:15,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 17:49:15,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 17:49:16,634 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 17:49:16,634 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 17:49:16,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 05:49:16 BoogieIcfgContainer [2020-10-28 17:49:16,638 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 17:49:16,641 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 17:49:16,641 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 17:49:16,645 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 17:49:16,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 05:49:15" (1/3) ... [2020-10-28 17:49:16,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7632ec65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 05:49:16, skipping insertion in model container [2020-10-28 17:49:16,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 05:49:15" (2/3) ... [2020-10-28 17:49:16,649 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7632ec65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 05:49:16, skipping insertion in model container [2020-10-28 17:49:16,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 05:49:16" (3/3) ... [2020-10-28 17:49:16,651 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c [2020-10-28 17:49:16,664 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 17:49:16,669 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 17:49:16,680 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 17:49:16,706 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 17:49:16,706 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 17:49:16,706 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 17:49:16,706 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 17:49:16,706 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 17:49:16,706 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 17:49:16,707 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 17:49:16,707 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 17:49:16,727 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states. [2020-10-28 17:49:16,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-28 17:49:16,736 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:49:16,737 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] [2020-10-28 17:49:16,738 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:49:16,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:49:16,745 INFO L82 PathProgramCache]: Analyzing trace with hash 1333944120, now seen corresponding path program 1 times [2020-10-28 17:49:16,755 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:49:16,755 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [160684205] [2020-10-28 17:49:16,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:49:17,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:49:17,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:49:17,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:49:17,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 17:49:17,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:49:17,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 449 [2020-10-28 17:49:17,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:49:17,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:49:17,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:49:17,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 17:49:17,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:49:17,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 17:49:17,690 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-28 17:49:17,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:49:17,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:49:17,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:49:17,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:49:17,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:49:17,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:49:17,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 17:49:17,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:49:17,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:49:17,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:49:17,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:49:17,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:49:17,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:49:17,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:49:17,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:49:17,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:49:17,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:49:17,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:49:17,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:49:17,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:49:17,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:49:17,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:49:17,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:49:17,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:49:17,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:49:17,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:49:17,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-28 17:49:17,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:49:17,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:49:17,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:49:17,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:49:17,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:49:17,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 17:49:17,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:49:17,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:49:17,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:49:17,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:49:17,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:49:17,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:49:17,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 17:49:17,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:49:17,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:49:17,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:49:17,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:49:17,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:49:17,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:49:17,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:49:17,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:49:17,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:49:17,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:49:17,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:49:17,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:49:17,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 17:49:17,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:49:17,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:49:17,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:49:17,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:49:17,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:49:17,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:49:17,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:49:17,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:49:17,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:49:17,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:49:17,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:49:17,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:49:17,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 17:49:17,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:49:17,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:49:17,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:49:17,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:49:17,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:49:17,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:49:17,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:49:17,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:49:17,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:49:17,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:49:17,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:49:17,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:49:17,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:49:17,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [160684205] [2020-10-28 17:49:17,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:49:17,968 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 17:49:17,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984639583] [2020-10-28 17:49:17,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 17:49:17,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:49:17,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 17:49:17,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 17:49:17,994 INFO L87 Difference]: Start difference. First operand 107 states. Second operand 6 states. [2020-10-28 17:49:18,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:49:18,658 INFO L93 Difference]: Finished difference Result 184 states and 264 transitions. [2020-10-28 17:49:18,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 17:49:18,660 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 50 [2020-10-28 17:49:18,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:49:18,671 INFO L225 Difference]: With dead ends: 184 [2020-10-28 17:49:18,672 INFO L226 Difference]: Without dead ends: 102 [2020-10-28 17:49:18,676 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:49:18,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-28 17:49:18,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 99. [2020-10-28 17:49:18,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-28 17:49:18,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 144 transitions. [2020-10-28 17:49:18,730 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 144 transitions. Word has length 50 [2020-10-28 17:49:18,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:49:18,731 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 144 transitions. [2020-10-28 17:49:18,731 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 17:49:18,731 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 144 transitions. [2020-10-28 17:49:18,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-28 17:49:18,734 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:49:18,734 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] [2020-10-28 17:49:18,734 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 17:49:18,734 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:49:18,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:49:18,735 INFO L82 PathProgramCache]: Analyzing trace with hash 1993475642, now seen corresponding path program 1 times [2020-10-28 17:49:18,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:49:18,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [151537001] [2020-10-28 17:49:18,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:49:18,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:49:18,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:49:19,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:49:19,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 17:49:19,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:49:19,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 406 [2020-10-28 17:49:19,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:49:19,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:49:19,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:49:19,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 17:49:19,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:49:19,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:49:19,350 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-28 17:49:19,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:49:19,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:49:19,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:49:19,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:49:19,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:49:19,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:49:19,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:49:19,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:49:19,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:49:19,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:49:19,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:49:19,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:49:19,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:49:19,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:49:19,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:49:19,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:49:19,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:49:19,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:49:19,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:49:19,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:49:19,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:49:19,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:49:19,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:49:19,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:49:19,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:49:19,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:49:19,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-28 17:49:19,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:49:19,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:49:19,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:49:19,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:49:19,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:49:19,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:49:19,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:49:19,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:49:19,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:49:19,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:49:19,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:49:19,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:49:19,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-28 17:49:19,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:49:19,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:49:19,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:49:19,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:49:19,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:49:19,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:49:19,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:49:19,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:49:19,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:49:19,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:49:19,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:49:19,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:49:19,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 17:49:19,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:49:19,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:49:19,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:49:19,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:49:19,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:49:19,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:49:19,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:49:19,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:49:19,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:49:19,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-28 17:49:19,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:49:19,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:49:19,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 17:49:19,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:49:19,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:49:19,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:49:19,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:49:19,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:49:19,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:49:19,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:49:19,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:49:19,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:49:19,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:49:19,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:49:19,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:49:19,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:49:19,533 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [151537001] [2020-10-28 17:49:19,533 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:49:19,533 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 17:49:19,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018995442] [2020-10-28 17:49:19,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 17:49:19,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:49:19,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 17:49:19,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-28 17:49:19,536 INFO L87 Difference]: Start difference. First operand 99 states and 144 transitions. Second operand 10 states. [2020-10-28 17:49:19,704 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 17:49:19,859 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-28 17:49:20,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:49:20,634 INFO L93 Difference]: Finished difference Result 185 states and 263 transitions. [2020-10-28 17:49:20,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 17:49:20,635 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 50 [2020-10-28 17:49:20,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:49:20,638 INFO L225 Difference]: With dead ends: 185 [2020-10-28 17:49:20,638 INFO L226 Difference]: Without dead ends: 111 [2020-10-28 17:49:20,640 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-10-28 17:49:20,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-28 17:49:20,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 99. [2020-10-28 17:49:20,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-28 17:49:20,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 127 transitions. [2020-10-28 17:49:20,661 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 127 transitions. Word has length 50 [2020-10-28 17:49:20,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:49:20,662 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 127 transitions. [2020-10-28 17:49:20,662 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 17:49:20,662 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 127 transitions. [2020-10-28 17:49:20,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-28 17:49:20,664 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:49:20,665 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] [2020-10-28 17:49:20,665 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 17:49:20,665 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:49:20,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:49:20,666 INFO L82 PathProgramCache]: Analyzing trace with hash -217618876, now seen corresponding path program 1 times [2020-10-28 17:49:20,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:49:20,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [368648339] [2020-10-28 17:49:20,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:49:20,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:49:20,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:49:20,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:49:20,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:49:20,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:49:25,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:49:25,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-28 17:49:25,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:49:25,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-28 17:49:25,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:49:25,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:49:25,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:49:25,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 17:49:25,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-28 17:49:25,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 17:49:25,925 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-28 17:49:25,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:49:25,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:49:25,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:49:25,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:49:25,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:49:25,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:49:25,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 17:49:25,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:49:25,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:49:25,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:49:25,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:49:25,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:49:25,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:49:25,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:49:25,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:49:25,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:49:25,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:49:25,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 17:49:25,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:49:25,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 17:49:25,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:49:25,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:49:25,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:49:25,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:49:25,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 17:49:25,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:49:26,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 17:49:26,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:49:26,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:49:26,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:49:26,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:49:26,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:49:26,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 17:49:26,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:49:26,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:49:26,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:49:26,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:49:26,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:49:26,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:49:26,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-28 17:49:26,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:49:26,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:49:26,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:49:26,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:49:26,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:49:26,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:49:26,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:49:26,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:49:26,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:49:26,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:49:26,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:49:26,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:49:26,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 17:49:26,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:49:26,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:49:26,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:49:26,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:49:26,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:49:26,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 17:49:26,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:49:26,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:49:26,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:49:26,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:49:26,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:49:26,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:49:26,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 17:49:26,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:49:26,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:49:26,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:49:26,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:49:26,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:49:26,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:49:26,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:49:26,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:49:26,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:49:26,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:49:26,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:49:26,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:49:26,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:49:26,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [368648339] [2020-10-28 17:49:26,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:49:26,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:49:26,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763140641] [2020-10-28 17:49:26,184 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:49:26,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:49:26,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:49:26,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:49:26,186 INFO L87 Difference]: Start difference. First operand 99 states and 127 transitions. Second operand 9 states. [2020-10-28 17:49:26,338 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-28 17:49:27,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:49:27,429 INFO L93 Difference]: Finished difference Result 228 states and 306 transitions. [2020-10-28 17:49:27,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 17:49:27,431 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 66 [2020-10-28 17:49:27,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:49:27,437 INFO L225 Difference]: With dead ends: 228 [2020-10-28 17:49:27,437 INFO L226 Difference]: Without dead ends: 160 [2020-10-28 17:49:27,439 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-10-28 17:49:27,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-10-28 17:49:27,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 152. [2020-10-28 17:49:27,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-28 17:49:27,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 201 transitions. [2020-10-28 17:49:27,467 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 201 transitions. Word has length 66 [2020-10-28 17:49:27,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:49:27,467 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 201 transitions. [2020-10-28 17:49:27,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:49:27,467 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 201 transitions. [2020-10-28 17:49:27,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-28 17:49:27,470 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:49:27,471 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] [2020-10-28 17:49:27,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 17:49:27,471 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:49:27,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:49:27,472 INFO L82 PathProgramCache]: Analyzing trace with hash -590134767, now seen corresponding path program 1 times [2020-10-28 17:49:27,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:49:27,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [43970877] [2020-10-28 17:49:27,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:49:27,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:49:27,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:49:27,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:49:27,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:49:29,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:49:29,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 17:49:29,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 17:49:29,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2009 [2020-10-28 17:49:29,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:49:29,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:49:29,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:49:29,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-28 17:49:29,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 17:49:29,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:49:29,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:49:29,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:49:29,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:49:29,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:49:29,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:49:29,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:49:29,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:49:29,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:49:29,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:49:29,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:49:29,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:49:29,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:49:29,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:49:29,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:49:29,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:49:29,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:49:29,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:49:29,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 17:49:29,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:49:29,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 17:49:29,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:49:29,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:49:29,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:49:29,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:49:29,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 17:49:29,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:49:29,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 17:49:29,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:49:29,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:49:29,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:49:29,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:49:29,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:49:29,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:49:29,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:49:29,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:49:29,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:49:29,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:49:29,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:49:29,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:49:29,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-28 17:49:29,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:49:29,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:49:29,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:49:29,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:49:29,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:49:29,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 17:49:29,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:49:29,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:49:29,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:49:29,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:49:29,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:49:29,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:49:29,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 17:49:29,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:49:29,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:49:29,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:49:29,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:49:29,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:49:29,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:49:29,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:49:29,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:49:29,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:49:29,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 17:49:29,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:49:29,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:49:29,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-28 17:49:29,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:49:29,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:49:29,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:49:29,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:49:29,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:49:29,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:49:29,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:49:29,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:49:29,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:49:29,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:49:29,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:49:29,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:49:29,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:49:29,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [43970877] [2020-10-28 17:49:29,869 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:49:29,869 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:49:29,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020248161] [2020-10-28 17:49:29,870 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:49:29,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:49:29,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:49:29,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:49:29,871 INFO L87 Difference]: Start difference. First operand 152 states and 201 transitions. Second operand 9 states. [2020-10-28 17:49:31,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:49:31,014 INFO L93 Difference]: Finished difference Result 378 states and 513 transitions. [2020-10-28 17:49:31,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 17:49:31,020 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 67 [2020-10-28 17:49:31,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:49:31,030 INFO L225 Difference]: With dead ends: 378 [2020-10-28 17:49:31,030 INFO L226 Difference]: Without dead ends: 257 [2020-10-28 17:49:31,034 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-10-28 17:49:31,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2020-10-28 17:49:31,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 246. [2020-10-28 17:49:31,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2020-10-28 17:49:31,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 329 transitions. [2020-10-28 17:49:31,100 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 329 transitions. Word has length 67 [2020-10-28 17:49:31,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:49:31,101 INFO L481 AbstractCegarLoop]: Abstraction has 246 states and 329 transitions. [2020-10-28 17:49:31,101 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:49:31,101 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 329 transitions. [2020-10-28 17:49:31,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-28 17:49:31,103 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:49:31,103 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:49:31,104 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 17:49:31,104 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:49:31,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:49:31,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1700472512, now seen corresponding path program 1 times [2020-10-28 17:49:31,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:49:31,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2007273692] [2020-10-28 17:49:31,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:49:31,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:49:31,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:49:31,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:49:32,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:49:32,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 17:49:32,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:49:32,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1020 [2020-10-28 17:49:32,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:49:32,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:49:32,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:49:32,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 17:49:32,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 17:49:32,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:49:32,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:49:32,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:49:32,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:49:32,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:49:32,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:49:32,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:49:32,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:49:32,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:49:32,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:49:32,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:49:32,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:49:32,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:49:32,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:49:32,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:49:32,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:49:32,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:49:32,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:49:32,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 17:49:32,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:49:32,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 17:49:32,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:49:32,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:49:32,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:49:32,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:49:32,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:49:32,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:49:32,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 17:49:32,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:49:32,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:49:32,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:49:32,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:49:32,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:49:32,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 17:49:32,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:49:32,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:49:32,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:49:32,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:49:32,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:49:32,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:49:32,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-28 17:49:32,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:49:32,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:49:32,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:49:32,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:49:32,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:49:32,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:49:32,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:49:32,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:49:32,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:49:32,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 17:49:32,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:49:32,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:49:32,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-28 17:49:32,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:49:32,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:49:32,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:49:32,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:49:32,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:49:32,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:49:32,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:49:32,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:49:32,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:49:32,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-28 17:49:32,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:49:32,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:49:32,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 17:49:32,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:49:32,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:49:32,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:49:32,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:49:32,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:49:32,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:49:32,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:49:32,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:49:32,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:49:32,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:49:32,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:49:32,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:49:32,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:49:32,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2007273692] [2020-10-28 17:49:32,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:49:32,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:49:32,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140742565] [2020-10-28 17:49:32,511 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:49:32,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:49:32,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:49:32,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:49:32,512 INFO L87 Difference]: Start difference. First operand 246 states and 329 transitions. Second operand 9 states. [2020-10-28 17:49:32,657 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-28 17:49:33,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:49:33,834 INFO L93 Difference]: Finished difference Result 652 states and 885 transitions. [2020-10-28 17:49:33,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 17:49:33,835 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 68 [2020-10-28 17:49:33,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:49:33,842 INFO L225 Difference]: With dead ends: 652 [2020-10-28 17:49:33,843 INFO L226 Difference]: Without dead ends: 437 [2020-10-28 17:49:33,848 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-10-28 17:49:33,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2020-10-28 17:49:33,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 422. [2020-10-28 17:49:33,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 422 states. [2020-10-28 17:49:33,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 565 transitions. [2020-10-28 17:49:33,957 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 565 transitions. Word has length 68 [2020-10-28 17:49:33,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:49:33,957 INFO L481 AbstractCegarLoop]: Abstraction has 422 states and 565 transitions. [2020-10-28 17:49:33,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:49:33,957 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 565 transitions. [2020-10-28 17:49:33,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-28 17:49:33,966 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:49:33,966 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:49:33,967 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 17:49:33,967 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:49:33,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:49:33,968 INFO L82 PathProgramCache]: Analyzing trace with hash 811500134, now seen corresponding path program 1 times [2020-10-28 17:49:33,968 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:49:33,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [149588200] [2020-10-28 17:49:33,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:49:33,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:49:34,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:49:34,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:49:35,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:49:35,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 17:49:35,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:49:35,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1482 [2020-10-28 17:49:35,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:49:35,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:49:35,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:49:35,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-28 17:49:35,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-28 17:49:35,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:49:35,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:49:35,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:49:35,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:49:35,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:49:35,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:49:35,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:49:35,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:49:35,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:49:35,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:49:35,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:49:35,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:49:35,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:49:35,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:49:35,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:49:35,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:49:35,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:49:35,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:49:35,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 17:49:35,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:49:35,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 17:49:35,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:49:35,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:49:35,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:49:35,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:49:35,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 17:49:35,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:49:35,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 17:49:35,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:49:35,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:49:35,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:49:35,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:49:35,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:49:35,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 17:49:35,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:49:35,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:49:35,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:49:35,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:49:35,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:49:35,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:49:35,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-28 17:49:35,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:49:35,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:49:35,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:49:35,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:49:35,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:49:35,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 17:49:35,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:49:35,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:49:35,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:49:35,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:49:35,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 17:49:35,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:49:35,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-28 17:49:35,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:49:35,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:49:35,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:49:35,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:49:35,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:49:35,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:49:35,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:49:35,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:49:35,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:49:35,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-28 17:49:35,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:49:35,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:49:35,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 17:49:35,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:49:35,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:49:35,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:49:35,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:49:35,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:49:35,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:49:35,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:49:35,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:49:35,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:49:35,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:49:35,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:49:35,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:49:35,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:49:35,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [149588200] [2020-10-28 17:49:35,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:49:35,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-28 17:49:35,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405872935] [2020-10-28 17:49:35,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 17:49:35,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:49:35,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 17:49:35,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-28 17:49:35,905 INFO L87 Difference]: Start difference. First operand 422 states and 565 transitions. Second operand 12 states. [2020-10-28 17:49:36,072 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-10-28 17:49:36,237 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-10-28 17:49:36,502 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-28 17:49:36,853 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-28 17:49:37,023 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 127 [2020-10-28 17:49:37,160 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-28 17:49:37,743 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-28 17:49:37,867 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-28 17:49:38,008 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-10-28 17:49:38,146 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-28 17:49:38,362 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-10-28 17:49:38,487 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-28 17:49:41,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:49:41,948 INFO L93 Difference]: Finished difference Result 2993 states and 4235 transitions. [2020-10-28 17:49:41,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-10-28 17:49:41,950 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 68 [2020-10-28 17:49:41,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:49:41,969 INFO L225 Difference]: With dead ends: 2993 [2020-10-28 17:49:41,969 INFO L226 Difference]: Without dead ends: 2602 [2020-10-28 17:49:41,975 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1060 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=594, Invalid=2828, Unknown=0, NotChecked=0, Total=3422 [2020-10-28 17:49:41,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2602 states. [2020-10-28 17:49:42,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2602 to 2559. [2020-10-28 17:49:42,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2559 states. [2020-10-28 17:49:42,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2559 states to 2559 states and 3344 transitions. [2020-10-28 17:49:42,240 INFO L78 Accepts]: Start accepts. Automaton has 2559 states and 3344 transitions. Word has length 68 [2020-10-28 17:49:42,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:49:42,240 INFO L481 AbstractCegarLoop]: Abstraction has 2559 states and 3344 transitions. [2020-10-28 17:49:42,240 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 17:49:42,240 INFO L276 IsEmpty]: Start isEmpty. Operand 2559 states and 3344 transitions. [2020-10-28 17:49:42,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-28 17:49:42,242 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:49:42,242 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:49:42,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 17:49:42,243 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:49:42,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:49:42,243 INFO L82 PathProgramCache]: Analyzing trace with hash -724182908, now seen corresponding path program 1 times [2020-10-28 17:49:42,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:49:42,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [101267247] [2020-10-28 17:49:42,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:49:42,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:49:42,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:49:42,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:49:42,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-28 17:49:42,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:49:42,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 372 [2020-10-28 17:49:42,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:49:42,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:49:42,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:49:42,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 17:49:42,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-28 17:49:42,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:49:42,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:49:42,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:49:42,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:49:42,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:49:42,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:49:42,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:49:42,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:49:42,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:49:42,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:49:42,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:49:42,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:49:42,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:49:42,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:49:42,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:49:42,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:49:42,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:49:42,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:49:42,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 17:49:42,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:49:42,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 17:49:42,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:49:42,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:49:42,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:49:42,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:49:42,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 17:49:42,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:49:42,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 17:49:42,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:49:42,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:49:42,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:49:42,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:49:42,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:49:42,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 17:49:42,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:49:42,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:49:42,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:49:42,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:49:42,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:49:42,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:49:42,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-28 17:49:42,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:49:42,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:49:42,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:49:42,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:49:42,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:49:42,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:49:42,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:49:42,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:49:42,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:49:42,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:49:42,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 17:49:42,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:49:42,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-28 17:49:42,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:49:42,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:49:42,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:49:42,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:49:42,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:49:42,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 17:49:42,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:49:42,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:49:42,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:49:42,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:49:42,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 17:49:42,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:49:42,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 17:49:42,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:49:42,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:49:42,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:49:42,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:49:42,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:49:42,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:49:42,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:49:42,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:49:42,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:49:42,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 17:49:42,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:49:42,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:49:43,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:49:43,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [101267247] [2020-10-28 17:49:43,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:49:43,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-28 17:49:43,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344926908] [2020-10-28 17:49:43,025 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 17:49:43,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:49:43,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 17:49:43,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-10-28 17:49:43,026 INFO L87 Difference]: Start difference. First operand 2559 states and 3344 transitions. Second operand 13 states. [2020-10-28 17:49:44,785 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-28 17:49:44,917 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 17:49:48,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:49:48,051 INFO L93 Difference]: Finished difference Result 18141 states and 24659 transitions. [2020-10-28 17:49:48,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-28 17:49:48,052 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 69 [2020-10-28 17:49:48,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:49:48,167 INFO L225 Difference]: With dead ends: 18141 [2020-10-28 17:49:48,167 INFO L226 Difference]: Without dead ends: 15662 [2020-10-28 17:49:48,183 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 722 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=588, Invalid=1962, Unknown=0, NotChecked=0, Total=2550 [2020-10-28 17:49:48,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15662 states. [2020-10-28 17:49:49,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15662 to 14659. [2020-10-28 17:49:49,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14659 states. [2020-10-28 17:49:49,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14659 states to 14659 states and 19048 transitions. [2020-10-28 17:49:49,780 INFO L78 Accepts]: Start accepts. Automaton has 14659 states and 19048 transitions. Word has length 69 [2020-10-28 17:49:49,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:49:49,781 INFO L481 AbstractCegarLoop]: Abstraction has 14659 states and 19048 transitions. [2020-10-28 17:49:49,781 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 17:49:49,781 INFO L276 IsEmpty]: Start isEmpty. Operand 14659 states and 19048 transitions. [2020-10-28 17:49:49,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-28 17:49:49,783 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:49:49,783 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] [2020-10-28 17:49:49,783 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 17:49:49,783 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:49:49,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:49:49,784 INFO L82 PathProgramCache]: Analyzing trace with hash -481616789, now seen corresponding path program 1 times [2020-10-28 17:49:49,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:49:49,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [667681910] [2020-10-28 17:49:49,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:49:49,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:49:49,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:49:50,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:49:50,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 17:49:50,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:49:50,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 338 [2020-10-28 17:49:50,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:49:50,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:49:50,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:49:50,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 76 [2020-10-28 17:49:50,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:49:50,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:49:50,340 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-28 17:49:50,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:49:50,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:49:50,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:49:50,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:49:50,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:49:50,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:49:50,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 17:49:50,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:49:50,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:49:50,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:49:50,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:49:50,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:49:50,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:49:50,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:49:50,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:49:50,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:49:50,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:49:50,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 17:49:50,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:49:50,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:49:50,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:49:50,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:49:50,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:49:50,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:49:50,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:49:50,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:49:50,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 17:49:50,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:49:50,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:49:50,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:49:50,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:49:50,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:49:50,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:49:50,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:49:50,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:49:50,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:49:50,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:49:50,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:49:50,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:49:50,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-28 17:49:50,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:49:50,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:49:50,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:49:50,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:49:50,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:49:50,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:49:50,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:49:50,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:49:50,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:49:50,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:49:50,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:49:50,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:49:50,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-28 17:49:50,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:49:50,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:49:50,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:49:50,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:49:50,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:49:50,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:49:50,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:49:50,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:49:50,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:49:50,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:49:50,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:49:50,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:49:50,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 17:49:50,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:49:50,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:49:50,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:49:50,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:49:50,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:49:50,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:49:50,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:49:50,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:49:50,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:49:50,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:49:50,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 17:49:50,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:49:50,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:49:50,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [667681910] [2020-10-28 17:49:50,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:49:50,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-28 17:49:50,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492309582] [2020-10-28 17:49:50,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 17:49:50,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:49:50,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 17:49:50,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-28 17:49:50,556 INFO L87 Difference]: Start difference. First operand 14659 states and 19048 transitions. Second operand 12 states. [2020-10-28 17:49:51,297 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 17:49:51,433 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-28 17:49:51,596 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-28 17:49:51,733 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-10-28 17:49:53,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:49:53,150 INFO L93 Difference]: Finished difference Result 18375 states and 24739 transitions. [2020-10-28 17:49:53,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 17:49:53,150 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 70 [2020-10-28 17:49:53,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:49:53,270 INFO L225 Difference]: With dead ends: 18375 [2020-10-28 17:49:53,270 INFO L226 Difference]: Without dead ends: 18372 [2020-10-28 17:49:53,283 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2020-10-28 17:49:53,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18372 states. [2020-10-28 17:49:54,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18372 to 16387. [2020-10-28 17:49:54,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16387 states. [2020-10-28 17:49:54,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16387 states to 16387 states and 20776 transitions. [2020-10-28 17:49:54,897 INFO L78 Accepts]: Start accepts. Automaton has 16387 states and 20776 transitions. Word has length 70 [2020-10-28 17:49:54,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:49:54,898 INFO L481 AbstractCegarLoop]: Abstraction has 16387 states and 20776 transitions. [2020-10-28 17:49:54,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 17:49:54,899 INFO L276 IsEmpty]: Start isEmpty. Operand 16387 states and 20776 transitions. [2020-10-28 17:49:54,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-28 17:49:54,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:49:54,900 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] [2020-10-28 17:49:54,901 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 17:49:54,901 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:49:54,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:49:54,901 INFO L82 PathProgramCache]: Analyzing trace with hash 182904460, now seen corresponding path program 1 times [2020-10-28 17:49:54,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:49:54,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1040290206] [2020-10-28 17:49:54,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:49:54,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:49:54,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:49:55,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:49:55,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 17:49:55,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:49:55,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-28 17:49:55,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:49:55,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:49:55,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:49:55,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 17:49:55,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-28 17:49:55,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:49:55,265 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-28 17:49:55,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:49:55,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:49:55,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:49:55,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:49:55,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:49:55,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:49:55,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:49:55,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:49:55,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:49:55,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:49:55,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:49:55,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:49:55,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:49:55,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:49:55,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:49:55,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:49:55,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:49:55,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 17:49:55,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:49:55,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:49:55,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:49:55,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:49:55,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:49:55,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:49:55,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 17:49:55,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:49:55,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 17:49:55,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:49:55,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:49:55,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:49:55,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:49:55,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:49:55,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 17:49:55,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:49:55,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:49:55,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:49:55,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:49:55,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:49:55,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:49:55,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-28 17:49:55,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:49:55,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:49:55,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:49:55,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:49:55,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:49:55,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:49:55,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:49:55,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:49:55,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:49:55,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:49:55,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 17:49:55,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:49:55,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-28 17:49:55,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:49:55,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:49:55,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:49:55,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:49:55,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:49:55,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:49:55,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:49:55,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:49:55,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:49:55,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:49:55,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:49:55,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:49:55,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 17:49:55,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:49:55,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:49:55,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:49:55,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:49:55,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:49:55,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:49:55,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:49:55,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:49:55,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:49:55,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-28 17:49:55,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:49:55,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:49:55,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 17:49:55,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1040290206] [2020-10-28 17:49:55,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 17:49:55,493 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-28 17:49:55,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247397642] [2020-10-28 17:49:55,494 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 17:49:55,494 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:49:55,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 17:49:55,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-28 17:49:55,495 INFO L87 Difference]: Start difference. First operand 16387 states and 20776 transitions. Second operand 9 states. [2020-10-28 17:49:55,631 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-28 17:49:56,639 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-28 17:49:58,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:49:58,783 INFO L93 Difference]: Finished difference Result 45481 states and 58331 transitions. [2020-10-28 17:49:58,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 17:49:58,784 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 71 [2020-10-28 17:49:58,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:49:58,912 INFO L225 Difference]: With dead ends: 45481 [2020-10-28 17:49:58,913 INFO L226 Difference]: Without dead ends: 29174 [2020-10-28 17:49:58,966 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=118, Invalid=302, Unknown=0, NotChecked=0, Total=420 [2020-10-28 17:49:58,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29174 states. [2020-10-28 17:50:01,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29174 to 28951. [2020-10-28 17:50:01,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28951 states. [2020-10-28 17:50:01,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28951 states to 28951 states and 37064 transitions. [2020-10-28 17:50:01,114 INFO L78 Accepts]: Start accepts. Automaton has 28951 states and 37064 transitions. Word has length 71 [2020-10-28 17:50:01,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:50:01,114 INFO L481 AbstractCegarLoop]: Abstraction has 28951 states and 37064 transitions. [2020-10-28 17:50:01,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 17:50:01,114 INFO L276 IsEmpty]: Start isEmpty. Operand 28951 states and 37064 transitions. [2020-10-28 17:50:01,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-28 17:50:01,126 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:50:01,127 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:50:01,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 17:50:01,128 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:50:01,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:50:01,128 INFO L82 PathProgramCache]: Analyzing trace with hash 99524995, now seen corresponding path program 1 times [2020-10-28 17:50:01,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:50:01,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2133897438] [2020-10-28 17:50:01,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:50:01,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:01,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:01,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:03,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:03,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-28 17:50:03,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 17:50:03,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2489 [2020-10-28 17:50:03,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:03,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:03,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 17:50:03,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 17:50:03,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-28 17:50:03,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:03,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:50:03,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:03,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:03,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:03,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:50:03,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:03,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:50:03,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:03,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:03,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:50:03,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:50:03,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:50:03,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:03,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:50:03,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:03,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:03,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:03,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 17:50:03,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:03,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:50:03,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:03,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:03,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:50:03,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:50:03,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 17:50:03,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:03,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 17:50:03,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:03,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:03,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:03,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:50:03,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:03,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:50:03,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:03,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:03,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:50:03,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:50:03,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:50:03,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:03,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-28 17:50:03,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:03,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:03,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:03,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:50:03,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:03,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:50:03,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:03,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:03,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:50:03,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:50:03,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 17:50:03,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:03,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-28 17:50:03,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:03,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:03,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:03,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:50:03,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:03,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:50:03,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:03,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:03,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:50:03,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:50:03,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:50:03,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:03,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 17:50:03,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:03,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:03,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:03,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:50:03,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:03,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:50:03,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:03,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:03,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:50:03,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:50:03,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:50:03,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:03,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-28 17:50:03,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:03,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:03,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:03,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:50:03,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:03,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:50:03,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:03,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:03,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:50:03,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:50:03,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:50:03,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:03,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-28 17:50:03,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:03,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:03,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:03,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:50:03,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:03,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 17:50:03,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:03,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:03,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:50:03,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:50:03,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:50:03,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:04,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-28 17:50:04,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:04,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:04,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:04,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:50:04,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:04,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 17:50:04,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:04,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:04,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:50:04,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:50:04,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:50:04,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:04,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-28 17:50:04,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:04,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:04,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:04,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:50:04,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:04,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:50:04,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:04,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:04,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:50:04,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:50:04,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:50:04,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:04,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-28 17:50:04,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:04,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:04,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:04,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:50:04,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:04,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:50:04,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:04,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:04,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:50:04,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-28 17:50:04,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:50:04,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:04,107 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-28 17:50:04,108 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2133897438] [2020-10-28 17:50:04,108 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:50:04,108 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 17:50:04,108 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668472398] [2020-10-28 17:50:04,109 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 17:50:04,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:50:04,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 17:50:04,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-10-28 17:50:04,110 INFO L87 Difference]: Start difference. First operand 28951 states and 37064 transitions. Second operand 11 states. [2020-10-28 17:50:04,242 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-28 17:50:04,799 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-28 17:50:06,709 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-28 17:50:08,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:50:08,459 INFO L93 Difference]: Finished difference Result 66536 states and 85381 transitions. [2020-10-28 17:50:08,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-28 17:50:08,460 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 108 [2020-10-28 17:50:08,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:50:08,656 INFO L225 Difference]: With dead ends: 66536 [2020-10-28 17:50:08,657 INFO L226 Difference]: Without dead ends: 42321 [2020-10-28 17:50:08,741 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=201, Invalid=555, Unknown=0, NotChecked=0, Total=756 [2020-10-28 17:50:08,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42321 states. [2020-10-28 17:50:11,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42321 to 41987. [2020-10-28 17:50:11,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41987 states. [2020-10-28 17:50:11,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41987 states to 41987 states and 53616 transitions. [2020-10-28 17:50:11,990 INFO L78 Accepts]: Start accepts. Automaton has 41987 states and 53616 transitions. Word has length 108 [2020-10-28 17:50:11,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:50:11,991 INFO L481 AbstractCegarLoop]: Abstraction has 41987 states and 53616 transitions. [2020-10-28 17:50:11,991 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 17:50:11,991 INFO L276 IsEmpty]: Start isEmpty. Operand 41987 states and 53616 transitions. [2020-10-28 17:50:12,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-28 17:50:12,003 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:50:12,003 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:50:12,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 17:50:12,004 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:50:12,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:50:12,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1846154966, now seen corresponding path program 1 times [2020-10-28 17:50:12,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:50:12,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [87006966] [2020-10-28 17:50:12,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:50:12,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:12,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:12,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:12,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:13,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:14,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:17,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:17,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-28 17:50:17,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:50:17,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 17:50:17,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:17,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:17,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:50:17,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 17:50:17,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 17:50:17,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:50:17,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:50:17,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:17,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:17,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:17,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:50:17,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:17,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 17:50:17,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:17,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:17,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:50:17,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:50:17,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 17:50:17,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:17,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:50:17,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:17,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:17,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:17,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 17:50:17,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:17,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 17:50:17,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:17,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:17,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:50:17,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:50:17,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 17:50:17,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:17,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 17:50:17,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:17,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:17,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:17,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:50:17,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:17,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:50:17,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:17,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:17,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:50:17,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:50:17,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:50:17,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:17,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-28 17:50:17,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:17,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:17,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:17,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:50:17,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:17,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 17:50:17,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:17,436 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:17,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:50:17,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:50:17,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 17:50:17,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:17,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-28 17:50:17,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:17,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:17,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:17,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:50:17,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:17,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:50:17,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:17,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:17,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:50:17,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:50:17,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:50:17,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:17,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 17:50:17,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:17,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:17,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:17,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:50:17,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:17,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:50:17,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:17,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:17,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:50:17,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:50:17,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:50:17,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:17,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-28 17:50:17,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:17,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:17,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:17,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:50:17,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:17,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:50:17,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:17,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:17,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:50:17,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:50:17,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:50:17,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:50:17,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-28 17:50:17,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:17,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:17,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:17,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:50:17,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:17,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:50:17,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:17,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:17,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:50:17,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:50:17,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:50:17,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:17,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-28 17:50:17,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:17,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:17,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:17,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:50:17,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:17,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:50:17,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:17,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:17,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:50:17,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:50:17,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:50:17,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:17,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-28 17:50:17,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:17,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:17,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:17,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:50:17,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:17,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 17:50:17,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:17,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:17,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:50:17,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:50:17,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 17:50:17,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:17,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-28 17:50:17,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:17,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:17,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:17,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:50:17,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:17,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:50:17,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:17,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:17,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:50:17,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:50:17,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:50:17,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:50:17,647 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-28 17:50:17,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [87006966] [2020-10-28 17:50:17,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:50:17,648 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 17:50:17,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879792034] [2020-10-28 17:50:17,648 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 17:50:17,649 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:50:17,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 17:50:17,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-10-28 17:50:17,649 INFO L87 Difference]: Start difference. First operand 41987 states and 53616 transitions. Second operand 15 states. [2020-10-28 17:50:17,913 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 120 [2020-10-28 17:50:18,064 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-28 17:50:18,504 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 124 [2020-10-28 17:50:18,905 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 43 [2020-10-28 17:50:19,232 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 126 [2020-10-28 17:50:19,478 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 122 [2020-10-28 17:50:19,752 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 124 [2020-10-28 17:50:20,334 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 122 [2020-10-28 17:50:25,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:50:25,258 INFO L93 Difference]: Finished difference Result 104650 states and 133808 transitions. [2020-10-28 17:50:25,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-28 17:50:25,258 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 109 [2020-10-28 17:50:25,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:50:25,501 INFO L225 Difference]: With dead ends: 104650 [2020-10-28 17:50:25,501 INFO L226 Difference]: Without dead ends: 62743 [2020-10-28 17:50:25,585 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=459, Invalid=1263, Unknown=0, NotChecked=0, Total=1722 [2020-10-28 17:50:25,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62743 states. [2020-10-28 17:50:30,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62743 to 61270. [2020-10-28 17:50:30,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61270 states. [2020-10-28 17:50:30,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61270 states to 61270 states and 77684 transitions. [2020-10-28 17:50:30,429 INFO L78 Accepts]: Start accepts. Automaton has 61270 states and 77684 transitions. Word has length 109 [2020-10-28 17:50:30,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:50:30,429 INFO L481 AbstractCegarLoop]: Abstraction has 61270 states and 77684 transitions. [2020-10-28 17:50:30,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 17:50:30,429 INFO L276 IsEmpty]: Start isEmpty. Operand 61270 states and 77684 transitions. [2020-10-28 17:50:30,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-28 17:50:30,441 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:50:30,442 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:50:30,442 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 17:50:30,443 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:50:30,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:50:30,444 INFO L82 PathProgramCache]: Analyzing trace with hash 697551070, now seen corresponding path program 1 times [2020-10-28 17:50:30,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:50:30,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [376046435] [2020-10-28 17:50:30,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:50:30,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:30,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:30,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:30,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:30,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:31,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:35,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:35,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-28 17:50:35,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:50:35,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-28 17:50:35,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:35,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:35,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 17:50:35,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 17:50:35,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-28 17:50:35,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:35,671 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-28 17:50:35,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:50:35,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:35,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:35,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:35,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:50:35,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:35,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:50:35,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:35,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:35,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:50:35,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:50:35,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:50:35,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:35,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:50:35,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:35,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:35,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:35,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 17:50:35,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:35,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 17:50:35,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:35,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:35,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:50:35,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:50:35,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 17:50:35,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:35,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 17:50:35,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:35,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:35,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:35,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:50:35,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:35,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:50:35,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:35,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:35,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:50:35,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:50:35,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:50:35,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:35,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-28 17:50:35,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:35,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:35,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:35,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:50:35,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:35,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:50:35,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:35,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:35,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:50:35,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:50:35,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:50:35,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:35,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 17:50:35,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:35,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:35,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:35,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:50:35,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:35,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:50:35,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:35,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:35,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:50:35,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:50:35,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 17:50:35,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:35,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 17:50:35,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:35,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:35,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:35,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:50:35,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:35,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:50:35,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:35,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:35,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:50:35,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:50:35,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:50:35,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:35,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-28 17:50:35,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:35,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:35,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:35,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:50:35,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:35,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:50:35,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:35,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:35,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:50:35,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:50:35,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:50:35,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:35,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-28 17:50:35,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:35,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:35,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:35,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:50:35,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:35,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 17:50:35,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:35,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:35,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:50:35,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:50:35,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:50:35,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:35,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-28 17:50:35,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:35,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:35,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:35,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:50:35,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:35,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:50:35,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:35,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:35,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:50:35,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:50:35,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:50:35,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:35,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-28 17:50:35,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:35,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:35,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:35,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:50:35,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:35,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:50:35,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:35,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:35,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:50:35,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:50:35,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:50:35,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:35,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-28 17:50:35,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:35,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:35,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:35,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:50:35,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:35,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:50:35,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:35,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:35,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:50:35,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 17:50:35,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:50:35,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:36,043 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-28 17:50:36,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [376046435] [2020-10-28 17:50:36,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:50:36,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 17:50:36,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884848109] [2020-10-28 17:50:36,044 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 17:50:36,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:50:36,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 17:50:36,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-10-28 17:50:36,045 INFO L87 Difference]: Start difference. First operand 61270 states and 77684 transitions. Second operand 14 states. [2020-10-28 17:50:36,365 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 121 [2020-10-28 17:50:36,539 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-28 17:50:36,699 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-28 17:50:37,586 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-28 17:50:38,309 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-28 17:50:38,436 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-28 17:50:38,571 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-28 17:50:38,696 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-28 17:50:45,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:50:45,186 INFO L93 Difference]: Finished difference Result 117953 states and 150613 transitions. [2020-10-28 17:50:45,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-28 17:50:45,187 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 109 [2020-10-28 17:50:45,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:50:45,702 INFO L225 Difference]: With dead ends: 117953 [2020-10-28 17:50:45,702 INFO L226 Difference]: Without dead ends: 68824 [2020-10-28 17:50:45,806 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 689 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=577, Invalid=2075, Unknown=0, NotChecked=0, Total=2652 [2020-10-28 17:50:45,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68824 states. [2020-10-28 17:50:50,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68824 to 67227. [2020-10-28 17:50:50,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67227 states. [2020-10-28 17:50:51,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67227 states to 67227 states and 84934 transitions. [2020-10-28 17:50:51,313 INFO L78 Accepts]: Start accepts. Automaton has 67227 states and 84934 transitions. Word has length 109 [2020-10-28 17:50:51,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:50:51,314 INFO L481 AbstractCegarLoop]: Abstraction has 67227 states and 84934 transitions. [2020-10-28 17:50:51,314 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 17:50:51,314 INFO L276 IsEmpty]: Start isEmpty. Operand 67227 states and 84934 transitions. [2020-10-28 17:50:51,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-28 17:50:51,341 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:50:51,342 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:50:51,342 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 17:50:51,342 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:50:51,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:50:51,343 INFO L82 PathProgramCache]: Analyzing trace with hash -466221175, now seen corresponding path program 1 times [2020-10-28 17:50:51,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:50:51,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1163300774] [2020-10-28 17:50:51,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:50:51,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:51,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:51,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:51,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:51,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:54,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:56,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:56,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-28 17:50:56,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 17:50:56,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 17:50:56,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:56,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:56,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 17:50:56,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 17:50:56,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-28 17:50:56,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:56,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:50:56,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:56,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:56,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:56,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:50:56,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:56,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:50:56,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:56,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:56,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:50:56,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:50:56,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:50:56,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:56,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:50:56,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:56,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:56,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:56,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 17:50:56,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:56,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 17:50:56,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:56,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:56,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:50:56,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:50:56,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 17:50:56,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:56,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 17:50:56,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:56,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:56,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:56,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:50:56,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:56,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:50:56,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:56,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:56,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:50:56,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:50:56,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:50:56,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:56,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 17:50:56,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:56,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:56,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:56,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:50:56,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:56,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:50:56,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:56,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:56,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:50:56,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:50:56,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 17:50:56,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:56,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 17:50:56,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:56,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:56,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:56,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 17:50:56,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:56,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 17:50:56,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:56,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:56,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:50:56,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:50:56,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 17:50:56,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:56,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-28 17:50:56,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:56,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:56,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:56,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:50:56,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:56,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:50:56,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:56,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:56,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:50:56,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:50:56,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:50:56,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:56,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-28 17:50:56,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:56,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:56,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:56,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:50:56,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:56,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:50:56,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:56,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:56,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:50:56,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:50:56,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:50:56,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:56,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-28 17:50:56,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:56,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:56,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:56,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:50:56,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:56,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:50:56,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:56,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:56,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:50:56,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:50:56,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:50:56,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:56,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-28 17:50:56,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:56,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:56,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:56,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:50:56,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:56,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 17:50:56,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:56,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:56,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:50:56,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:50:56,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:50:56,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:50:56,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-28 17:50:56,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:56,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:56,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:56,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:50:56,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:56,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 17:50:56,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:56,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:56,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:50:56,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:50:56,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:50:56,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:50:56,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-28 17:50:56,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:50:56,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:50:56,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:50:56,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:50:56,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:50:56,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:50:56,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:50:56,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:50:56,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:50:56,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 17:50:56,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:50:56,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:50:56,948 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-28 17:50:56,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1163300774] [2020-10-28 17:50:56,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:50:56,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 17:50:56,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015979125] [2020-10-28 17:50:56,950 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 17:50:56,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:50:56,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 17:50:56,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-10-28 17:50:56,952 INFO L87 Difference]: Start difference. First operand 67227 states and 84934 transitions. Second operand 14 states. [2020-10-28 17:50:57,317 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 121 [2020-10-28 17:50:57,494 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-28 17:50:57,640 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-28 17:50:58,887 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-28 17:50:59,041 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-28 17:50:59,179 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2020-10-28 17:50:59,386 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-28 17:51:06,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:51:06,913 INFO L93 Difference]: Finished difference Result 103581 states and 131262 transitions. [2020-10-28 17:51:06,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-28 17:51:06,914 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 110 [2020-10-28 17:51:06,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:51:07,520 INFO L225 Difference]: With dead ends: 103581 [2020-10-28 17:51:07,521 INFO L226 Difference]: Without dead ends: 88033 [2020-10-28 17:51:07,563 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 707 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=584, Invalid=2068, Unknown=0, NotChecked=0, Total=2652 [2020-10-28 17:51:07,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88033 states. [2020-10-28 17:51:13,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88033 to 84792. [2020-10-28 17:51:13,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84792 states. [2020-10-28 17:51:13,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84792 states to 84792 states and 107150 transitions. [2020-10-28 17:51:13,898 INFO L78 Accepts]: Start accepts. Automaton has 84792 states and 107150 transitions. Word has length 110 [2020-10-28 17:51:13,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:51:13,899 INFO L481 AbstractCegarLoop]: Abstraction has 84792 states and 107150 transitions. [2020-10-28 17:51:13,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 17:51:13,899 INFO L276 IsEmpty]: Start isEmpty. Operand 84792 states and 107150 transitions. [2020-10-28 17:51:13,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-28 17:51:13,908 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:51:13,908 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:51:13,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 17:51:13,909 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:51:13,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:51:13,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1211661724, now seen corresponding path program 1 times [2020-10-28 17:51:13,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:51:13,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1458902930] [2020-10-28 17:51:13,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:51:13,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:13,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:14,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:14,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:15,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:18,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:18,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-28 17:51:18,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 17:51:18,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 17:51:18,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:18,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:18,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 17:51:18,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 17:51:18,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-28 17:51:18,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:19,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:51:19,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:19,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:19,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:19,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:51:19,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:19,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:51:19,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:19,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:19,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:51:19,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:51:19,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:51:19,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:19,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:51:19,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:19,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:19,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:19,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 17:51:19,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:19,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:51:19,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:19,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:19,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:51:19,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:51:19,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:51:19,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:19,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 17:51:19,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:19,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:19,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:19,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:51:19,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:19,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:51:19,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:19,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:19,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:51:19,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:51:19,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:51:19,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:19,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-28 17:51:19,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:19,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:19,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:19,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:51:19,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:19,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 17:51:19,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:19,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:19,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:51:19,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:51:19,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 17:51:19,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:19,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 17:51:19,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:19,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:19,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:19,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:51:19,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:19,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:51:19,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:19,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:19,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:51:19,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:51:19,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:51:19,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:19,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-28 17:51:19,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:19,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:19,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:19,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:51:19,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:19,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:51:19,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:19,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:19,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:51:19,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:51:19,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:51:19,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:19,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-28 17:51:19,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:19,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:19,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:19,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:51:19,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:19,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:51:19,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:19,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:19,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:51:19,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:51:19,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:51:19,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:19,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-28 17:51:19,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:19,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:19,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:19,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:51:19,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:19,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 17:51:19,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:19,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:19,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:51:19,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:51:19,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:51:19,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:19,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-28 17:51:19,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:19,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:19,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:19,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:51:19,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:19,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 17:51:19,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:19,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:19,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:51:19,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:51:19,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:51:19,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:19,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-28 17:51:19,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:19,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:19,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:19,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:51:19,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:19,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 17:51:19,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:19,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:19,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:51:19,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:51:19,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:51:19,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:19,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-28 17:51:19,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:19,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:19,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:19,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:51:19,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:19,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:51:19,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:19,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:19,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:51:19,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-28 17:51:19,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 17:51:19,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:19,576 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-28 17:51:19,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1458902930] [2020-10-28 17:51:19,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:51:19,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 17:51:19,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325552875] [2020-10-28 17:51:19,577 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 17:51:19,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:51:19,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 17:51:19,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2020-10-28 17:51:19,578 INFO L87 Difference]: Start difference. First operand 84792 states and 107150 transitions. Second operand 15 states. [2020-10-28 17:51:19,854 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 120 [2020-10-28 17:51:20,014 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-28 17:51:20,160 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-28 17:51:20,991 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-28 17:51:21,389 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-28 17:51:22,021 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-28 17:51:22,189 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-10-28 17:51:29,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:51:29,334 INFO L93 Difference]: Finished difference Result 130669 states and 165897 transitions. [2020-10-28 17:51:29,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-28 17:51:29,334 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 110 [2020-10-28 17:51:29,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:51:29,774 INFO L225 Difference]: With dead ends: 130669 [2020-10-28 17:51:29,774 INFO L226 Difference]: Without dead ends: 80645 [2020-10-28 17:51:29,838 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 521 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=515, Invalid=1741, Unknown=0, NotChecked=0, Total=2256 [2020-10-28 17:51:29,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80645 states. [2020-10-28 17:51:35,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80645 to 78567. [2020-10-28 17:51:35,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78567 states. [2020-10-28 17:51:35,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78567 states to 78567 states and 99125 transitions. [2020-10-28 17:51:35,881 INFO L78 Accepts]: Start accepts. Automaton has 78567 states and 99125 transitions. Word has length 110 [2020-10-28 17:51:35,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:51:35,882 INFO L481 AbstractCegarLoop]: Abstraction has 78567 states and 99125 transitions. [2020-10-28 17:51:35,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 17:51:35,882 INFO L276 IsEmpty]: Start isEmpty. Operand 78567 states and 99125 transitions. [2020-10-28 17:51:35,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-28 17:51:35,891 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:51:35,891 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:51:35,891 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 17:51:35,891 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:51:35,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:51:35,891 INFO L82 PathProgramCache]: Analyzing trace with hash -1688420951, now seen corresponding path program 1 times [2020-10-28 17:51:35,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:51:35,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [907235239] [2020-10-28 17:51:35,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:51:35,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:35,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:36,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:36,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:37,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:38,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:39,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:40,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:40,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-28 17:51:40,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 17:51:40,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 17:51:40,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:40,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:40,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 17:51:40,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:51:40,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 17:51:40,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:41,115 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-28 17:51:41,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:51:41,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:41,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:41,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:41,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:51:41,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:41,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:51:41,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:41,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:41,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:51:41,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:51:41,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:51:41,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:51:41,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:51:41,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:41,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:41,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:41,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 17:51:41,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:41,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 17:51:41,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:41,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:41,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:51:41,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:51:41,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 17:51:41,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:41,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 17:51:41,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:41,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:41,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:41,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:51:41,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:41,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:51:41,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:41,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:41,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:51:41,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:51:41,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:51:41,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:41,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-28 17:51:41,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:41,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:41,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:41,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:51:41,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:41,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 17:51:41,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:41,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:41,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 17:51:41,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:51:41,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 17:51:41,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 17:51:41,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 17:51:41,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:41,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:41,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:41,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:51:41,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:41,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 17:51:41,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:41,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:41,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:51:41,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:51:41,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:51:41,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:41,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-28 17:51:41,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:41,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:41,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:41,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:51:41,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:41,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 17:51:41,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:41,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:41,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:51:41,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:51:41,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:51:41,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:41,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-28 17:51:41,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:41,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:41,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:41,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:51:41,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:41,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 17:51:41,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:41,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:41,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:51:41,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:51:41,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:51:41,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 17:51:41,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-28 17:51:41,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:41,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:41,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:41,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:51:41,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:41,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 17:51:41,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:41,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:41,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:51:41,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:51:41,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:51:41,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:41,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-28 17:51:41,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:41,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:41,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:41,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:51:41,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:41,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:51:41,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:41,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:41,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:51:41,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:51:41,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:51:41,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:41,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-28 17:51:41,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:41,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:41,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:41,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:51:41,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:41,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 17:51:41,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:41,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:41,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:51:41,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:51:41,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 17:51:41,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:41,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-28 17:51:41,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:51:41,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:51:41,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:51:41,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:51:41,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:51:41,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:51:41,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:51:41,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:51:41,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:51:41,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:51:41,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:51:41,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:51:41,599 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-28 17:51:41,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [907235239] [2020-10-28 17:51:41,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:51:41,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-28 17:51:41,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914825813] [2020-10-28 17:51:41,600 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-28 17:51:41,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:51:41,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-28 17:51:41,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2020-10-28 17:51:41,603 INFO L87 Difference]: Start difference. First operand 78567 states and 99125 transitions. Second operand 18 states. [2020-10-28 17:51:41,917 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 122 [2020-10-28 17:51:42,086 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-28 17:51:42,459 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 124 [2020-10-28 17:51:43,034 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 126 [2020-10-28 17:51:43,621 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 126 [2020-10-28 17:51:44,330 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 126 [2020-10-28 17:51:45,371 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 128 [2020-10-28 17:51:45,986 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-28 17:51:46,306 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 128 [2020-10-28 17:51:48,603 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-10-28 17:51:48,830 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-28 17:52:02,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 17:52:02,154 INFO L93 Difference]: Finished difference Result 253053 states and 319158 transitions. [2020-10-28 17:52:02,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-10-28 17:52:02,155 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 113 [2020-10-28 17:52:02,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 17:52:03,042 INFO L225 Difference]: With dead ends: 253053 [2020-10-28 17:52:03,042 INFO L226 Difference]: Without dead ends: 193399 [2020-10-28 17:52:03,227 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1024 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=778, Invalid=3254, Unknown=0, NotChecked=0, Total=4032 [2020-10-28 17:52:03,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193399 states. [2020-10-28 17:52:17,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193399 to 167647. [2020-10-28 17:52:17,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167647 states. [2020-10-28 17:52:18,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167647 states to 167647 states and 209723 transitions. [2020-10-28 17:52:18,080 INFO L78 Accepts]: Start accepts. Automaton has 167647 states and 209723 transitions. Word has length 113 [2020-10-28 17:52:18,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 17:52:18,081 INFO L481 AbstractCegarLoop]: Abstraction has 167647 states and 209723 transitions. [2020-10-28 17:52:18,081 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-28 17:52:18,081 INFO L276 IsEmpty]: Start isEmpty. Operand 167647 states and 209723 transitions. [2020-10-28 17:52:18,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-28 17:52:18,091 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 17:52:18,092 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 17:52:18,092 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 17:52:18,092 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 17:52:18,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 17:52:18,092 INFO L82 PathProgramCache]: Analyzing trace with hash 220036839, now seen corresponding path program 1 times [2020-10-28 17:52:18,093 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 17:52:18,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1401787053] [2020-10-28 17:52:18,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 17:52:18,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:52:18,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:52:18,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:52:18,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:52:19,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:52:19,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:52:19,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:52:19,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:52:19,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:52:19,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:52:20,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:52:21,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:52:23,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:52:23,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-28 17:52:23,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 17:52:23,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 17:52:23,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:52:23,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:52:23,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 17:52:23,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 17:52:23,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-28 17:52:23,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:52:23,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 17:52:23,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:52:23,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:52:23,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:52:23,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 17:52:23,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:52:23,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 17:52:23,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:52:23,303 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:52:23,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:52:23,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:52:23,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 17:52:23,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:52:23,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-28 17:52:23,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:52:23,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:52:23,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:52:23,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 17:52:23,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:52:23,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 17:52:23,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:52:23,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:52:23,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 17:52:23,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:52:23,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 17:52:23,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:52:23,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-28 17:52:23,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:52:23,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:52:23,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:52:23,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:52:23,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:52:23,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:52:23,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:52:23,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:52:23,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 17:52:23,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:52:23,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 17:52:23,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:52:23,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-28 17:52:23,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:52:23,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:52:23,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:52:23,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:52:23,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:52:23,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:52:23,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:52:23,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:52:23,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:52:23,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:52:23,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:52:23,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:52:23,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 17:52:23,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:52:23,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:52:23,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:52:23,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 17:52:23,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:52:23,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 17:52:23,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:52:23,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:52:23,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:52:23,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:52:23,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 17:52:23,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:52:23,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-28 17:52:23,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:52:23,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:52:23,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:52:23,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:52:23,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:52:23,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:52:23,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:52:23,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:52:23,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:52:23,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:52:23,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:52:23,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:52:23,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-28 17:52:23,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:52:23,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:52:23,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:52:23,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 17:52:23,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:52:23,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:52:23,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:52:23,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:52:23,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:52:23,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:52:23,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 17:52:23,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:52:23,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-28 17:52:23,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:52:23,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:52:23,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:52:23,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 17:52:23,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:52:23,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 17:52:23,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:52:23,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:52:23,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 17:52:23,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 17:52:23,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 17:52:23,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:52:23,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-28 17:52:23,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:52:23,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:52:23,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:52:23,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:52:23,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:52:23,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 17:52:23,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:52:23,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:52:23,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 17:52:23,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 17:52:23,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 17:52:23,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:52:23,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-28 17:52:23,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:52:23,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:52:23,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:52:23,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-28 17:52:23,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:52:23,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 17:52:23,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:52:23,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:52:23,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:52:23,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 17:52:23,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:52:23,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:52:23,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-28 17:52:23,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 17:52:23,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 17:52:23,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 17:52:23,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 17:52:23,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 17:52:23,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 17:52:23,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 17:52:23,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 17:52:23,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 17:52:23,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-28 17:52:23,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 17:52:23,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 17:52:23,568 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-28 17:52:23,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1401787053] [2020-10-28 17:52:23,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 17:52:23,568 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 17:52:23,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643842666] [2020-10-28 17:52:23,569 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 17:52:23,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 17:52:23,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 17:52:23,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-10-28 17:52:23,570 INFO L87 Difference]: Start difference. First operand 167647 states and 209723 transitions. Second operand 15 states. [2020-10-28 17:52:23,842 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 120 [2020-10-28 17:52:23,993 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-28 17:52:24,413 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 124 [2020-10-28 17:52:24,887 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 122 [2020-10-28 17:52:25,679 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 122