/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 19:18:41,012 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 19:18:41,015 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 19:18:41,050 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 19:18:41,051 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 19:18:41,052 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 19:18:41,054 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 19:18:41,056 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 19:18:41,058 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 19:18:41,059 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 19:18:41,060 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 19:18:41,061 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 19:18:41,062 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 19:18:41,063 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 19:18:41,064 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 19:18:41,065 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 19:18:41,066 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 19:18:41,067 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 19:18:41,069 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 19:18:41,071 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 19:18:41,073 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 19:18:41,074 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 19:18:41,076 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 19:18:41,077 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 19:18:41,080 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 19:18:41,080 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 19:18:41,080 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 19:18:41,081 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 19:18:41,082 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 19:18:41,083 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 19:18:41,083 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 19:18:41,084 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 19:18:41,089 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 19:18:41,090 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 19:18:41,091 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 19:18:41,092 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 19:18:41,092 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 19:18:41,093 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 19:18:41,093 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 19:18:41,096 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 19:18:41,098 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 19:18:41,099 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 19:18:41,149 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 19:18:41,149 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 19:18:41,150 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 19:18:41,151 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 19:18:41,152 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 19:18:41,152 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 19:18:41,153 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 19:18:41,153 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 19:18:41,153 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 19:18:41,153 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 19:18:41,154 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 19:18:41,154 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 19:18:41,154 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 19:18:41,155 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 19:18:41,155 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 19:18:41,155 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 19:18:41,155 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 19:18:41,155 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 19:18:41,156 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 19:18:41,156 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 19:18:41,156 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 19:18:41,156 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 19:18:41,157 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 19:18:41,157 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 19:18:41,157 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 19:18:41,157 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 19:18:41,158 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 19:18:41,158 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 19:18:41,158 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 19:18:41,158 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 19:18:41,597 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 19:18:41,643 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 19:18:41,647 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 19:18:41,649 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 19:18:41,649 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 19:18:41,650 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-28 19:18:41,734 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb261787f/ea8aa20c0999423eb78ab7201b59f50e/FLAG2836a8217 [2020-10-28 19:18:42,473 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 19:18:42,474 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-28 19:18:42,504 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb261787f/ea8aa20c0999423eb78ab7201b59f50e/FLAG2836a8217 [2020-10-28 19:18:42,718 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb261787f/ea8aa20c0999423eb78ab7201b59f50e [2020-10-28 19:18:42,722 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 19:18:42,729 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 19:18:42,731 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 19:18:42,732 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 19:18:42,736 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 19:18:42,737 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 07:18:42" (1/1) ... [2020-10-28 19:18:42,744 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4623ecad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:18:42, skipping insertion in model container [2020-10-28 19:18:42,744 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 07:18:42" (1/1) ... [2020-10-28 19:18:42,753 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 19:18:42,837 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 19:18:43,268 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 19:18:43,287 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 19:18:43,484 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 19:18:43,517 INFO L208 MainTranslator]: Completed translation [2020-10-28 19:18:43,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:18:43 WrapperNode [2020-10-28 19:18:43,518 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 19:18:43,519 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 19:18:43,519 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 19:18:43,520 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 19:18:43,531 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:18:43" (1/1) ... [2020-10-28 19:18:43,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:18:43" (1/1) ... [2020-10-28 19:18:43,553 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:18:43" (1/1) ... [2020-10-28 19:18:43,554 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:18:43" (1/1) ... [2020-10-28 19:18:43,585 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:18:43" (1/1) ... [2020-10-28 19:18:43,607 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:18:43" (1/1) ... [2020-10-28 19:18:43,619 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:18:43" (1/1) ... [2020-10-28 19:18:43,636 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 19:18:43,640 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 19:18:43,640 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 19:18:43,641 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 19:18:43,642 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:18:43" (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 19:18:43,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 19:18:43,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 19:18:43,710 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 19:18:43,710 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 19:18:43,711 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 19:18:43,711 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 19:18:43,711 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 19:18:43,712 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 19:18:43,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 19:18:43,712 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 19:18:43,713 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 19:18:43,714 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 19:18:43,714 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 19:18:43,714 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 19:18:43,714 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 19:18:43,715 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 19:18:43,715 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 19:18:43,715 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 19:18:43,716 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-28 19:18:43,716 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 19:18:43,716 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 19:18:43,717 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 19:18:43,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 19:18:43,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 19:18:43,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 19:18:43,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 19:18:43,720 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 19:18:43,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 19:18:45,007 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 19:18:45,007 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 19:18:45,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 07:18:45 BoogieIcfgContainer [2020-10-28 19:18:45,010 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 19:18:45,011 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 19:18:45,012 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 19:18:45,015 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 19:18:45,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 07:18:42" (1/3) ... [2020-10-28 19:18:45,016 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@610fa292 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 07:18:45, skipping insertion in model container [2020-10-28 19:18:45,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 07:18:43" (2/3) ... [2020-10-28 19:18:45,017 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@610fa292 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 07:18:45, skipping insertion in model container [2020-10-28 19:18:45,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 07:18:45" (3/3) ... [2020-10-28 19:18:45,018 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.2.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-28 19:18:45,030 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 19:18:45,035 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 19:18:45,054 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 19:18:45,084 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 19:18:45,084 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 19:18:45,084 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 19:18:45,084 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 19:18:45,084 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 19:18:45,084 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 19:18:45,085 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 19:18:45,085 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 19:18:45,109 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states. [2020-10-28 19:18:45,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-28 19:18:45,126 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:18:45,127 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:18:45,128 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:18:45,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:18:45,134 INFO L82 PathProgramCache]: Analyzing trace with hash -566979542, now seen corresponding path program 1 times [2020-10-28 19:18:45,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:18:45,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1923754339] [2020-10-28 19:18:45,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:18:45,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:18:45,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:45,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:46,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:47,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:47,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:50,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:18:50,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-28 19:18:50,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 19:18:50,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5065 [2020-10-28 19:18:50,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:18:50,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:18:50,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:18:50,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-10-28 19:18:50,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-28 19:18:50,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 19:18:51,447 WARN L193 SmtUtils]: Spent 567.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-28 19:18:51,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:18:51,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:18:51,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:51,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:18:51,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:18:51,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:18:51,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 19:18:51,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:18:51,521 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:18:51,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:18:51,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:18:51,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:18:51,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:18:51,601 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 19:18:51,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1923754339] [2020-10-28 19:18:51,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:18:51,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:18:51,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451128173] [2020-10-28 19:18:51,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:18:51,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:18:51,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:18:51,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:18:51,636 INFO L87 Difference]: Start difference. First operand 351 states. Second operand 4 states. [2020-10-28 19:18:52,314 WARN L193 SmtUtils]: Spent 572.00 ms on a formula simplification that was a NOOP. DAG size: 294 [2020-10-28 19:18:54,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:18:54,633 INFO L93 Difference]: Finished difference Result 643 states and 1110 transitions. [2020-10-28 19:18:54,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:18:54,635 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 123 [2020-10-28 19:18:54,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:18:54,657 INFO L225 Difference]: With dead ends: 643 [2020-10-28 19:18:54,658 INFO L226 Difference]: Without dead ends: 481 [2020-10-28 19:18:54,663 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:18:54,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2020-10-28 19:18:54,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 478. [2020-10-28 19:18:54,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 478 states. [2020-10-28 19:18:54,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 792 transitions. [2020-10-28 19:18:54,767 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 792 transitions. Word has length 123 [2020-10-28 19:18:54,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:18:54,769 INFO L481 AbstractCegarLoop]: Abstraction has 478 states and 792 transitions. [2020-10-28 19:18:54,770 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:18:54,770 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 792 transitions. [2020-10-28 19:18:54,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-28 19:18:54,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:18:54,780 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:18:54,781 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 19:18:54,781 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:18:54,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:18:54,782 INFO L82 PathProgramCache]: Analyzing trace with hash -1372149791, now seen corresponding path program 1 times [2020-10-28 19:18:54,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:18:54,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1449976532] [2020-10-28 19:18:54,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:18:54,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:18:54,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:55,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:55,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:55,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:56,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:56,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:57,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:18:59,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:18:59,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-28 19:18:59,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 19:18:59,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5108 [2020-10-28 19:18:59,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:18:59,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:18:59,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:18:59,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:18:59,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 19:18:59,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-28 19:19:00,613 WARN L193 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-28 19:19:00,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:19:00,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:19:00,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:00,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:19:00,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:19:00,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:19:00,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 19:19:00,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:19:00,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:19:00,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:19:00,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:19:00,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:19:00,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:19:00,727 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 19:19:00,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1449976532] [2020-10-28 19:19:00,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:19:00,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:19:00,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926324446] [2020-10-28 19:19:00,730 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:19:00,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:19:00,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:19:00,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:19:00,731 INFO L87 Difference]: Start difference. First operand 478 states and 792 transitions. Second operand 5 states. [2020-10-28 19:19:03,631 WARN L193 SmtUtils]: Spent 478.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-28 19:19:03,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:19:03,751 INFO L93 Difference]: Finished difference Result 1364 states and 2257 transitions. [2020-10-28 19:19:03,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:19:03,752 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-10-28 19:19:03,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:19:03,763 INFO L225 Difference]: With dead ends: 1364 [2020-10-28 19:19:03,764 INFO L226 Difference]: Without dead ends: 921 [2020-10-28 19:19:03,767 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:19:03,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 921 states. [2020-10-28 19:19:03,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 921 to 918. [2020-10-28 19:19:03,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 918 states. [2020-10-28 19:19:03,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 918 states to 918 states and 1513 transitions. [2020-10-28 19:19:03,833 INFO L78 Accepts]: Start accepts. Automaton has 918 states and 1513 transitions. Word has length 126 [2020-10-28 19:19:03,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:19:03,833 INFO L481 AbstractCegarLoop]: Abstraction has 918 states and 1513 transitions. [2020-10-28 19:19:03,833 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:19:03,834 INFO L276 IsEmpty]: Start isEmpty. Operand 918 states and 1513 transitions. [2020-10-28 19:19:03,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-28 19:19:03,836 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:19:03,837 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:19:03,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 19:19:03,837 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:19:03,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:19:03,838 INFO L82 PathProgramCache]: Analyzing trace with hash -638460616, now seen corresponding path program 1 times [2020-10-28 19:19:03,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:19:03,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [836965815] [2020-10-28 19:19:03,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:19:03,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:19:03,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:04,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:04,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:04,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:04,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:07,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:08,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:08,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:08,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:19:08,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-28 19:19:08,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 19:19:08,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 19:19:08,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:19:08,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:19:08,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:19:08,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:19:08,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-28 19:19:08,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:19:09,533 WARN L193 SmtUtils]: Spent 478.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-28 19:19:09,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:19:09,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:19:09,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:09,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:19:09,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:19:09,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:19:09,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 19:19:09,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:19:09,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:19:09,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:19:09,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:19:09,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:19:09,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:19:09,637 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 19:19:09,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [836965815] [2020-10-28 19:19:09,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:19:09,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:19:09,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895724693] [2020-10-28 19:19:09,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:19:09,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:19:09,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:19:09,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:19:09,640 INFO L87 Difference]: Start difference. First operand 918 states and 1513 transitions. Second operand 5 states. [2020-10-28 19:19:12,337 WARN L193 SmtUtils]: Spent 471.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-28 19:19:12,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:19:12,463 INFO L93 Difference]: Finished difference Result 2626 states and 4316 transitions. [2020-10-28 19:19:12,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:19:12,464 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-10-28 19:19:12,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:19:12,476 INFO L225 Difference]: With dead ends: 2626 [2020-10-28 19:19:12,476 INFO L226 Difference]: Without dead ends: 1773 [2020-10-28 19:19:12,479 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:19:12,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1773 states. [2020-10-28 19:19:12,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1773 to 1770. [2020-10-28 19:19:12,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1770 states. [2020-10-28 19:19:12,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1770 states to 1770 states and 2897 transitions. [2020-10-28 19:19:12,581 INFO L78 Accepts]: Start accepts. Automaton has 1770 states and 2897 transitions. Word has length 127 [2020-10-28 19:19:12,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:19:12,582 INFO L481 AbstractCegarLoop]: Abstraction has 1770 states and 2897 transitions. [2020-10-28 19:19:12,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:19:12,582 INFO L276 IsEmpty]: Start isEmpty. Operand 1770 states and 2897 transitions. [2020-10-28 19:19:12,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-28 19:19:12,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:19:12,589 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:19:12,589 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 19:19:12,590 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:19:12,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:19:12,590 INFO L82 PathProgramCache]: Analyzing trace with hash 315114605, now seen corresponding path program 1 times [2020-10-28 19:19:12,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:19:12,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [350012437] [2020-10-28 19:19:12,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:19:12,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:19:12,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:12,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:12,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:13,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:13,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:13,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:14,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:17,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:19:17,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-28 19:19:17,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 19:19:17,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 19:19:17,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:19:17,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:19:17,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:19:17,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:19:17,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-28 19:19:17,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:19:18,280 WARN L193 SmtUtils]: Spent 516.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-28 19:19:18,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:19:18,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:19:18,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:18,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:19:18,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:19:18,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:19:18,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 19:19:18,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:19:18,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:19:18,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:19:18,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:19:18,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:19:18,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 19:19:18,386 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 19:19:18,386 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [350012437] [2020-10-28 19:19:18,387 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:19:18,387 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:19:18,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682523516] [2020-10-28 19:19:18,388 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:19:18,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:19:18,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:19:18,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:19:18,390 INFO L87 Difference]: Start difference. First operand 1770 states and 2897 transitions. Second operand 5 states. [2020-10-28 19:19:21,261 WARN L193 SmtUtils]: Spent 457.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-28 19:19:21,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:19:21,400 INFO L93 Difference]: Finished difference Result 5066 states and 8268 transitions. [2020-10-28 19:19:21,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:19:21,400 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-10-28 19:19:21,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:19:21,420 INFO L225 Difference]: With dead ends: 5066 [2020-10-28 19:19:21,421 INFO L226 Difference]: Without dead ends: 3461 [2020-10-28 19:19:21,426 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:19:21,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3461 states. [2020-10-28 19:19:21,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3461 to 3458. [2020-10-28 19:19:21,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3458 states. [2020-10-28 19:19:21,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3458 states to 3458 states and 5622 transitions. [2020-10-28 19:19:21,656 INFO L78 Accepts]: Start accepts. Automaton has 3458 states and 5622 transitions. Word has length 127 [2020-10-28 19:19:21,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:19:21,656 INFO L481 AbstractCegarLoop]: Abstraction has 3458 states and 5622 transitions. [2020-10-28 19:19:21,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:19:21,656 INFO L276 IsEmpty]: Start isEmpty. Operand 3458 states and 5622 transitions. [2020-10-28 19:19:21,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-28 19:19:21,663 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:19:21,663 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:19:21,663 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 19:19:21,663 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:19:21,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:19:21,664 INFO L82 PathProgramCache]: Analyzing trace with hash -684876839, now seen corresponding path program 1 times [2020-10-28 19:19:21,664 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:19:21,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [417288137] [2020-10-28 19:19:21,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:19:21,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:19:21,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:21,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:21,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:21,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:22,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:22,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:26,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:26,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:19:26,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-28 19:19:26,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 19:19:26,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-28 19:19:26,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:19:26,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:19:26,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:19:26,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:19:26,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 19:19:26,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:19:27,257 WARN L193 SmtUtils]: Spent 419.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-28 19:19:27,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:19:27,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:19:27,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:27,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:19:27,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:19:27,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:19:27,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 19:19:27,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:19:27,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:19:27,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:19:27,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:19:27,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:19:27,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:19:27,361 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 19:19:27,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [417288137] [2020-10-28 19:19:27,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:19:27,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:19:27,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502337750] [2020-10-28 19:19:27,363 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:19:27,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:19:27,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:19:27,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:19:27,364 INFO L87 Difference]: Start difference. First operand 3458 states and 5622 transitions. Second operand 5 states. [2020-10-28 19:19:30,079 WARN L193 SmtUtils]: Spent 521.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-28 19:19:30,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:19:30,282 INFO L93 Difference]: Finished difference Result 10052 states and 16304 transitions. [2020-10-28 19:19:30,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:19:30,285 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-10-28 19:19:30,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:19:30,324 INFO L225 Difference]: With dead ends: 10052 [2020-10-28 19:19:30,324 INFO L226 Difference]: Without dead ends: 6713 [2020-10-28 19:19:30,333 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:19:30,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6713 states. [2020-10-28 19:19:30,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6713 to 6710. [2020-10-28 19:19:30,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6710 states. [2020-10-28 19:19:30,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6710 states to 6710 states and 10828 transitions. [2020-10-28 19:19:30,770 INFO L78 Accepts]: Start accepts. Automaton has 6710 states and 10828 transitions. Word has length 128 [2020-10-28 19:19:30,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:19:30,771 INFO L481 AbstractCegarLoop]: Abstraction has 6710 states and 10828 transitions. [2020-10-28 19:19:30,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:19:30,771 INFO L276 IsEmpty]: Start isEmpty. Operand 6710 states and 10828 transitions. [2020-10-28 19:19:30,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-28 19:19:30,782 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:19:30,783 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:19:30,783 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 19:19:30,783 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:19:30,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:19:30,784 INFO L82 PathProgramCache]: Analyzing trace with hash 318129652, now seen corresponding path program 1 times [2020-10-28 19:19:30,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:19:30,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [364872558] [2020-10-28 19:19:30,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:19:30,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:19:30,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:30,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:31,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:31,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:32,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:32,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:32,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:35,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:19:35,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-28 19:19:35,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 19:19:35,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 19:19:35,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:19:35,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:19:35,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:19:35,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:19:35,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 19:19:35,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:19:36,473 WARN L193 SmtUtils]: Spent 487.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-28 19:19:36,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:19:36,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:19:36,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:36,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:19:36,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:19:36,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:19:36,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 19:19:36,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:19:36,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:19:36,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:19:36,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:19:36,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:19:36,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:19:36,585 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 19:19:36,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [364872558] [2020-10-28 19:19:36,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:19:36,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:19:36,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725743091] [2020-10-28 19:19:36,587 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:19:36,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:19:36,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:19:36,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:19:36,588 INFO L87 Difference]: Start difference. First operand 6710 states and 10828 transitions. Second operand 5 states. [2020-10-28 19:19:39,831 WARN L193 SmtUtils]: Spent 595.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-28 19:19:40,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:19:40,140 INFO L93 Difference]: Finished difference Result 18698 states and 30040 transitions. [2020-10-28 19:19:40,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:19:40,141 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-10-28 19:19:40,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:19:40,204 INFO L225 Difference]: With dead ends: 18698 [2020-10-28 19:19:40,205 INFO L226 Difference]: Without dead ends: 12901 [2020-10-28 19:19:40,219 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:19:40,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12901 states. [2020-10-28 19:19:41,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12901 to 12898. [2020-10-28 19:19:41,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12898 states. [2020-10-28 19:19:41,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12898 states to 12898 states and 20656 transitions. [2020-10-28 19:19:41,111 INFO L78 Accepts]: Start accepts. Automaton has 12898 states and 20656 transitions. Word has length 128 [2020-10-28 19:19:41,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:19:41,112 INFO L481 AbstractCegarLoop]: Abstraction has 12898 states and 20656 transitions. [2020-10-28 19:19:41,112 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:19:41,112 INFO L276 IsEmpty]: Start isEmpty. Operand 12898 states and 20656 transitions. [2020-10-28 19:19:41,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-28 19:19:41,134 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:19:41,134 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:19:41,135 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 19:19:41,135 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:19:41,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:19:41,136 INFO L82 PathProgramCache]: Analyzing trace with hash 939297255, now seen corresponding path program 1 times [2020-10-28 19:19:41,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:19:41,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1407857235] [2020-10-28 19:19:41,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:19:41,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:19:41,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:41,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:41,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:41,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:41,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:43,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:46,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:19:46,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-28 19:19:46,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 19:19:46,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 19:19:46,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:19:46,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:19:46,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:19:46,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:19:46,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 19:19:46,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:19:46,748 WARN L193 SmtUtils]: Spent 443.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-28 19:19:46,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:19:46,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:19:46,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:46,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:19:46,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:19:46,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:19:46,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 19:19:46,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:19:46,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:19:46,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:19:46,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:19:46,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:19:46,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:19:46,837 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 19:19:46,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1407857235] [2020-10-28 19:19:46,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:19:46,838 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:19:46,838 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908598863] [2020-10-28 19:19:46,838 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:19:46,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:19:46,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:19:46,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:19:46,839 INFO L87 Difference]: Start difference. First operand 12898 states and 20656 transitions. Second operand 5 states. [2020-10-28 19:19:50,255 WARN L193 SmtUtils]: Spent 465.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-28 19:19:50,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:19:50,825 INFO L93 Difference]: Finished difference Result 37049 states and 59288 transitions. [2020-10-28 19:19:50,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:19:50,826 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2020-10-28 19:19:50,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:19:50,879 INFO L225 Difference]: With dead ends: 37049 [2020-10-28 19:19:50,879 INFO L226 Difference]: Without dead ends: 24930 [2020-10-28 19:19:50,904 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:19:50,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24930 states. [2020-10-28 19:19:52,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24930 to 24927. [2020-10-28 19:19:52,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24927 states. [2020-10-28 19:19:52,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24927 states to 24927 states and 39720 transitions. [2020-10-28 19:19:52,818 INFO L78 Accepts]: Start accepts. Automaton has 24927 states and 39720 transitions. Word has length 129 [2020-10-28 19:19:52,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:19:52,818 INFO L481 AbstractCegarLoop]: Abstraction has 24927 states and 39720 transitions. [2020-10-28 19:19:52,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:19:52,818 INFO L276 IsEmpty]: Start isEmpty. Operand 24927 states and 39720 transitions. [2020-10-28 19:19:52,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-28 19:19:52,863 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:19:52,863 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:19:52,863 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 19:19:52,864 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:19:52,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:19:52,864 INFO L82 PathProgramCache]: Analyzing trace with hash -305058610, now seen corresponding path program 1 times [2020-10-28 19:19:52,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:19:52,865 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [652035258] [2020-10-28 19:19:52,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:19:52,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:19:52,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:52,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:53,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:53,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:53,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:54,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:54,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:57,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:19:57,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-28 19:19:57,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 19:19:57,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4739 [2020-10-28 19:19:57,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:19:57,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:19:57,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:19:57,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-28 19:19:57,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-28 19:19:57,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:19:58,207 WARN L193 SmtUtils]: Spent 515.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-28 19:19:58,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:19:58,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:19:58,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:19:58,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:19:58,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:19:58,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:19:58,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 19:19:58,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:19:58,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:19:58,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:19:58,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:19:58,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:19:58,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:19:58,259 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 19:19:58,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [652035258] [2020-10-28 19:19:58,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:19:58,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:19:58,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898444972] [2020-10-28 19:19:58,261 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:19:58,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:19:58,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:19:58,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:19:58,262 INFO L87 Difference]: Start difference. First operand 24927 states and 39720 transitions. Second operand 4 states. [2020-10-28 19:19:58,766 WARN L193 SmtUtils]: Spent 456.00 ms on a formula simplification that was a NOOP. DAG size: 294 [2020-10-28 19:20:02,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:20:02,433 INFO L93 Difference]: Finished difference Result 54885 states and 89516 transitions. [2020-10-28 19:20:02,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 19:20:02,434 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 129 [2020-10-28 19:20:02,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:20:02,522 INFO L225 Difference]: With dead ends: 54885 [2020-10-28 19:20:02,522 INFO L226 Difference]: Without dead ends: 39298 [2020-10-28 19:20:02,564 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:20:02,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39298 states. [2020-10-28 19:20:05,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39298 to 39295. [2020-10-28 19:20:05,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39295 states. [2020-10-28 19:20:05,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39295 states to 39295 states and 63432 transitions. [2020-10-28 19:20:05,704 INFO L78 Accepts]: Start accepts. Automaton has 39295 states and 63432 transitions. Word has length 129 [2020-10-28 19:20:05,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:20:05,704 INFO L481 AbstractCegarLoop]: Abstraction has 39295 states and 63432 transitions. [2020-10-28 19:20:05,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 19:20:05,705 INFO L276 IsEmpty]: Start isEmpty. Operand 39295 states and 63432 transitions. [2020-10-28 19:20:05,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-28 19:20:05,747 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:20:05,747 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:20:05,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 19:20:05,748 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:20:05,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:20:05,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1107484305, now seen corresponding path program 1 times [2020-10-28 19:20:05,751 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:20:05,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1683126760] [2020-10-28 19:20:05,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:20:05,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:20:05,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:05,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:06,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:06,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:06,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:08,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:08,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:08,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:09,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:10,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:20:10,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-28 19:20:10,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 19:20:10,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-28 19:20:10,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:20:10,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:20:10,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:20:10,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:20:10,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-28 19:20:10,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:20:11,389 WARN L193 SmtUtils]: Spent 442.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-28 19:20:11,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:20:11,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:20:11,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:11,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:20:11,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:20:11,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:20:11,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 19:20:11,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:20:11,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:20:11,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:20:11,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:20:11,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:20:11,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:20:11,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:20:11,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1683126760] [2020-10-28 19:20:11,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:20:11,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:20:11,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893957118] [2020-10-28 19:20:11,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:20:11,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:20:11,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:20:11,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:20:11,493 INFO L87 Difference]: Start difference. First operand 39295 states and 63432 transitions. Second operand 5 states. [2020-10-28 19:20:16,365 WARN L193 SmtUtils]: Spent 478.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-28 19:20:19,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:20:19,325 INFO L93 Difference]: Finished difference Result 114266 states and 184368 transitions. [2020-10-28 19:20:19,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:20:19,326 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2020-10-28 19:20:19,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:20:19,440 INFO L225 Difference]: With dead ends: 114266 [2020-10-28 19:20:19,440 INFO L226 Difference]: Without dead ends: 76791 [2020-10-28 19:20:19,502 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:20:19,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76791 states. [2020-10-28 19:20:25,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76791 to 76788. [2020-10-28 19:20:25,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76788 states. [2020-10-28 19:20:25,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76788 states to 76788 states and 123212 transitions. [2020-10-28 19:20:25,688 INFO L78 Accepts]: Start accepts. Automaton has 76788 states and 123212 transitions. Word has length 133 [2020-10-28 19:20:25,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:20:25,688 INFO L481 AbstractCegarLoop]: Abstraction has 76788 states and 123212 transitions. [2020-10-28 19:20:25,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:20:25,688 INFO L276 IsEmpty]: Start isEmpty. Operand 76788 states and 123212 transitions. [2020-10-28 19:20:25,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-28 19:20:25,739 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:20:25,739 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:20:25,739 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 19:20:25,740 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:20:25,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:20:25,740 INFO L82 PathProgramCache]: Analyzing trace with hash 1560181853, now seen corresponding path program 1 times [2020-10-28 19:20:25,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:20:25,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [926850493] [2020-10-28 19:20:25,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:20:25,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:20:25,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:25,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:26,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:26,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:26,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:27,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:28,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:28,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:28,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:30,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:20:30,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-28 19:20:30,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 19:20:30,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-28 19:20:30,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:20:30,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:20:30,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:20:30,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:20:30,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-28 19:20:30,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:20:31,338 WARN L193 SmtUtils]: Spent 440.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-28 19:20:31,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:20:31,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:20:31,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:31,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:20:31,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:20:31,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:20:31,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 19:20:31,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:20:31,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:20:31,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:20:31,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:20:31,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:20:31,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:20:31,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 19:20:31,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [926850493] [2020-10-28 19:20:31,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:20:31,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:20:31,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130245683] [2020-10-28 19:20:31,406 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:20:31,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:20:31,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:20:31,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:20:31,407 INFO L87 Difference]: Start difference. First operand 76788 states and 123212 transitions. Second operand 5 states. [2020-10-28 19:20:37,927 WARN L193 SmtUtils]: Spent 487.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-28 19:20:44,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:20:44,419 INFO L93 Difference]: Finished difference Result 225548 states and 361646 transitions. [2020-10-28 19:20:44,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:20:44,420 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2020-10-28 19:20:44,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:20:44,828 INFO L225 Difference]: With dead ends: 225548 [2020-10-28 19:20:44,828 INFO L226 Difference]: Without dead ends: 149664 [2020-10-28 19:20:44,912 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:20:45,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149664 states. [2020-10-28 19:20:56,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149664 to 149661. [2020-10-28 19:20:56,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149661 states. [2020-10-28 19:20:56,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149661 states to 149661 states and 238424 transitions. [2020-10-28 19:20:56,853 INFO L78 Accepts]: Start accepts. Automaton has 149661 states and 238424 transitions. Word has length 134 [2020-10-28 19:20:56,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:20:56,853 INFO L481 AbstractCegarLoop]: Abstraction has 149661 states and 238424 transitions. [2020-10-28 19:20:56,853 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:20:56,853 INFO L276 IsEmpty]: Start isEmpty. Operand 149661 states and 238424 transitions. [2020-10-28 19:20:56,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-28 19:20:56,941 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:20:56,942 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:20:56,942 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 19:20:56,942 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:20:56,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:20:56,943 INFO L82 PathProgramCache]: Analyzing trace with hash -79306342, now seen corresponding path program 1 times [2020-10-28 19:20:56,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:20:56,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1954632534] [2020-10-28 19:20:56,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:20:56,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:20:57,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:57,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:57,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:57,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:57,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:20:57,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:21:01,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:21:01,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-28 19:21:01,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 19:21:01,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 19:21:01,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:21:01,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:21:01,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 19:21:01,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 19:21:01,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-28 19:21:01,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:21:02,551 WARN L193 SmtUtils]: Spent 453.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-28 19:21:02,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:21:02,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:21:02,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:21:02,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:21:02,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:21:02,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:21:02,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 19:21:02,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:21:02,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:21:02,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:21:02,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:21:02,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:21:02,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:21:02,651 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 19:21:02,651 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1954632534] [2020-10-28 19:21:02,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:21:02,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 19:21:02,652 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260729840] [2020-10-28 19:21:02,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 19:21:02,652 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:21:02,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 19:21:02,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 19:21:02,653 INFO L87 Difference]: Start difference. First operand 149661 states and 238424 transitions. Second operand 5 states. [2020-10-28 19:21:14,302 WARN L193 SmtUtils]: Spent 596.00 ms on a formula simplification that was a NOOP. DAG size: 298 [2020-10-28 19:21:29,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 19:21:29,374 INFO L93 Difference]: Finished difference Result 435682 states and 694007 transitions. [2020-10-28 19:21:29,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 19:21:29,375 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2020-10-28 19:21:29,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 19:21:30,062 INFO L225 Difference]: With dead ends: 435682 [2020-10-28 19:21:30,062 INFO L226 Difference]: Without dead ends: 293215 [2020-10-28 19:21:30,186 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 19:21:30,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293215 states. [2020-10-28 19:21:55,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293215 to 293212. [2020-10-28 19:21:55,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293212 states. [2020-10-28 19:21:56,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293212 states to 293212 states and 464787 transitions. [2020-10-28 19:21:56,453 INFO L78 Accepts]: Start accepts. Automaton has 293212 states and 464787 transitions. Word has length 134 [2020-10-28 19:21:56,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 19:21:56,454 INFO L481 AbstractCegarLoop]: Abstraction has 293212 states and 464787 transitions. [2020-10-28 19:21:56,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 19:21:56,454 INFO L276 IsEmpty]: Start isEmpty. Operand 293212 states and 464787 transitions. [2020-10-28 19:21:57,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-28 19:21:57,126 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 19:21:57,126 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 19:21:57,126 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 19:21:57,126 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 19:21:57,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 19:21:57,127 INFO L82 PathProgramCache]: Analyzing trace with hash -3890606, now seen corresponding path program 1 times [2020-10-28 19:21:57,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 19:21:57,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [851270496] [2020-10-28 19:21:57,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 19:21:57,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:21:57,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:21:57,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:21:57,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:21:57,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:21:57,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:21:58,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:21:58,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:21:58,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:21:58,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:22:02,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:22:02,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-28 19:22:02,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 19:22:02,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 19:22:02,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:22:02,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:22:02,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 19:22:02,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-28 19:22:02,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-28 19:22:02,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:22:02,703 WARN L193 SmtUtils]: Spent 453.00 ms on a formula simplification that was a NOOP. DAG size: 292 [2020-10-28 19:22:02,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 19:22:02,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 19:22:02,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 19:22:02,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 19:22:02,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 19:22:02,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 19:22:02,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 19:22:02,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 19:22:02,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 19:22:02,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 19:22:02,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 19:22:02,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 19:22:02,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 19:22:02,747 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 19:22:02,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [851270496] [2020-10-28 19:22:02,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 19:22:02,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 19:22:02,748 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755275550] [2020-10-28 19:22:02,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 19:22:02,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 19:22:02,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 19:22:02,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 19:22:02,749 INFO L87 Difference]: Start difference. First operand 293212 states and 464787 transitions. Second operand 4 states. [2020-10-28 19:22:03,259 WARN L193 SmtUtils]: Spent 465.00 ms on a formula simplification that was a NOOP. DAG size: 294