/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.2.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 04:16:23,155 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 04:16:23,158 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 04:16:23,193 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 04:16:23,194 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 04:16:23,195 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 04:16:23,197 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 04:16:23,199 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 04:16:23,202 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 04:16:23,203 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 04:16:23,204 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 04:16:23,206 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 04:16:23,206 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 04:16:23,207 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 04:16:23,209 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 04:16:23,210 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 04:16:23,211 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 04:16:23,212 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 04:16:23,226 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 04:16:23,234 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 04:16:23,238 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 04:16:23,243 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 04:16:23,246 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 04:16:23,246 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 04:16:23,253 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 04:16:23,253 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 04:16:23,254 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 04:16:23,255 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 04:16:23,256 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 04:16:23,261 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 04:16:23,262 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 04:16:23,263 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 04:16:23,264 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 04:16:23,266 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 04:16:23,269 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 04:16:23,269 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 04:16:23,270 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 04:16:23,270 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 04:16:23,270 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 04:16:23,272 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 04:16:23,273 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 04:16:23,274 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 04:16:23,328 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 04:16:23,329 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 04:16:23,330 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 04:16:23,331 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 04:16:23,331 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 04:16:23,331 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 04:16:23,331 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 04:16:23,331 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 04:16:23,332 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 04:16:23,332 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 04:16:23,332 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 04:16:23,332 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 04:16:23,332 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 04:16:23,333 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 04:16:23,333 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 04:16:23,333 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 04:16:23,333 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 04:16:23,333 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 04:16:23,334 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 04:16:23,334 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 04:16:23,334 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 04:16:23,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:16:23,335 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 04:16:23,335 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 04:16:23,335 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 04:16:23,335 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 04:16:23,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 04:16:23,336 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 04:16:23,336 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 04:16:23,336 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 04:16:23,703 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 04:16:23,732 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 04:16:23,735 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 04:16:23,737 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 04:16:23,738 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 04:16:23,739 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.2.ufo.UNBOUNDED.pals.c [2020-10-27 04:16:23,824 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/956d82294/d1387ca9141c4725aa1a93ac74c50066/FLAG3bd11b374 [2020-10-27 04:16:24,459 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 04:16:24,462 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.2.ufo.UNBOUNDED.pals.c [2020-10-27 04:16:24,480 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/956d82294/d1387ca9141c4725aa1a93ac74c50066/FLAG3bd11b374 [2020-10-27 04:16:24,802 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/956d82294/d1387ca9141c4725aa1a93ac74c50066 [2020-10-27 04:16:24,807 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 04:16:24,818 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 04:16:24,820 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 04:16:24,821 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 04:16:24,825 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 04:16:24,826 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:16:24" (1/1) ... [2020-10-27 04:16:24,831 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62046dfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:16:24, skipping insertion in model container [2020-10-27 04:16:24,831 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:16:24" (1/1) ... [2020-10-27 04:16:24,841 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 04:16:24,917 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 04:16:25,290 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:16:25,302 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 04:16:25,361 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:16:25,386 INFO L208 MainTranslator]: Completed translation [2020-10-27 04:16:25,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:16:25 WrapperNode [2020-10-27 04:16:25,387 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 04:16:25,388 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 04:16:25,389 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 04:16:25,389 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 04:16:25,403 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:16:25" (1/1) ... [2020-10-27 04:16:25,404 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:16:25" (1/1) ... [2020-10-27 04:16:25,416 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:16:25" (1/1) ... [2020-10-27 04:16:25,417 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:16:25" (1/1) ... [2020-10-27 04:16:25,433 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:16:25" (1/1) ... [2020-10-27 04:16:25,447 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:16:25" (1/1) ... [2020-10-27 04:16:25,452 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:16:25" (1/1) ... [2020-10-27 04:16:25,462 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 04:16:25,466 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 04:16:25,466 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 04:16:25,466 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 04:16:25,467 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:16:25" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:16:25,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 04:16:25,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 04:16:25,562 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 04:16:25,563 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2020-10-27 04:16:25,563 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2020-10-27 04:16:25,564 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2020-10-27 04:16:25,565 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-27 04:16:25,565 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-27 04:16:25,565 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 04:16:25,565 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2020-10-27 04:16:25,566 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 04:16:25,566 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 04:16:25,566 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 04:16:25,567 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 04:16:25,567 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 04:16:25,568 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-27 04:16:25,568 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 04:16:25,568 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 04:16:25,569 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 04:16:25,569 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 04:16:25,569 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 04:16:25,569 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 04:16:25,569 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 04:16:25,569 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 04:16:25,570 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 04:16:25,570 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 04:16:25,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 04:16:25,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 04:16:25,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 04:16:25,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 04:16:25,571 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 04:16:25,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 04:16:26,600 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 04:16:26,600 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 04:16:26,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:16:26 BoogieIcfgContainer [2020-10-27 04:16:26,603 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 04:16:26,605 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 04:16:26,605 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 04:16:26,608 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 04:16:26,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:16:24" (1/3) ... [2020-10-27 04:16:26,609 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32fb7131 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:16:26, skipping insertion in model container [2020-10-27 04:16:26,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:16:25" (2/3) ... [2020-10-27 04:16:26,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32fb7131 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:16:26, skipping insertion in model container [2020-10-27 04:16:26,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:16:26" (3/3) ... [2020-10-27 04:16:26,612 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.2.ufo.UNBOUNDED.pals.c [2020-10-27 04:16:26,625 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 04:16:26,630 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 04:16:26,650 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 04:16:26,695 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 04:16:26,696 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 04:16:26,696 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 04:16:26,696 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 04:16:26,696 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 04:16:26,696 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 04:16:26,696 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 04:16:26,697 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 04:16:26,716 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states. [2020-10-27 04:16:26,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-27 04:16:26,728 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:16:26,729 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] [2020-10-27 04:16:26,729 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:16:26,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:16:26,735 INFO L82 PathProgramCache]: Analyzing trace with hash 1991455396, now seen corresponding path program 1 times [2020-10-27 04:16:26,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:16:26,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1190336966] [2020-10-27 04:16:26,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:16:27,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:27,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:27,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:27,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 04:16:27,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:27,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 476 [2020-10-27 04:16:27,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:27,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:16:27,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-27 04:16:27,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:16:27,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 04:16:28,211 WARN L193 SmtUtils]: Spent 565.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:16:28,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:16:28,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:28,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:28,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:28,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:16:28,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:28,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 04:16:28,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:28,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:16:28,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:16:28,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:16:28,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:28,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:16:28,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:28,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:28,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:28,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 04:16:28,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:28,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 04:16:28,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:28,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:16:28,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:16:28,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:16:28,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:28,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 04:16:28,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:28,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:28,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:28,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:16:28,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:28,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:16:28,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:28,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:16:28,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:16:28,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:16:28,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:28,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 04:16:28,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:28,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:28,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:28,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:16:28,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:28,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:16:28,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:28,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:16:28,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:16:28,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:16:28,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:28,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 04:16:28,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:28,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:28,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:28,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:16:28,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:28,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:16:28,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:28,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:16:28,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:16:28,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:16:28,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:28,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 04:16:28,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:28,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:28,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:28,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:16:28,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:28,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:16:28,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:28,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:16:28,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:16:28,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:16:28,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:28,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:16:28,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1190336966] [2020-10-27 04:16:28,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:16:28,595 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 04:16:28,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503114562] [2020-10-27 04:16:28,601 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 04:16:28,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:16:28,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 04:16:28,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 04:16:28,619 INFO L87 Difference]: Start difference. First operand 164 states. Second operand 6 states. [2020-10-27 04:16:30,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:16:30,344 INFO L93 Difference]: Finished difference Result 271 states and 432 transitions. [2020-10-27 04:16:30,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:16:30,346 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-10-27 04:16:30,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:16:30,359 INFO L225 Difference]: With dead ends: 271 [2020-10-27 04:16:30,359 INFO L226 Difference]: Without dead ends: 171 [2020-10-27 04:16:30,363 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:16:30,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-27 04:16:30,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 156. [2020-10-27 04:16:30,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-27 04:16:30,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 252 transitions. [2020-10-27 04:16:30,432 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 252 transitions. Word has length 59 [2020-10-27 04:16:30,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:16:30,432 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 252 transitions. [2020-10-27 04:16:30,433 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 04:16:30,433 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 252 transitions. [2020-10-27 04:16:30,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-27 04:16:30,436 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:16:30,436 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] [2020-10-27 04:16:30,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 04:16:30,437 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:16:30,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:16:30,438 INFO L82 PathProgramCache]: Analyzing trace with hash -252527902, now seen corresponding path program 1 times [2020-10-27 04:16:30,438 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:16:30,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1940953213] [2020-10-27 04:16:30,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:16:30,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:30,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:31,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:31,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 04:16:31,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:31,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 589 [2020-10-27 04:16:31,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:31,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:16:31,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-27 04:16:31,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:16:31,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:31,464 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:16:31,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:16:31,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:31,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:31,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:31,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:16:31,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:31,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 04:16:31,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:31,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:16:31,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:16:31,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:16:31,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:31,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:16:31,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:31,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:31,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:31,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 04:16:31,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:31,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-27 04:16:31,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:31,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:16:31,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:16:31,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 04:16:31,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:31,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 04:16:31,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:31,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:31,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:31,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:16:31,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:31,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:16:31,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:31,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:16:31,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:16:31,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:16:31,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:31,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 04:16:31,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:31,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:31,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:31,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:16:31,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:31,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:16:31,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:31,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:16:31,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:16:31,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:16:31,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:31,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 04:16:31,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:31,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:31,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:31,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:16:31,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:31,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:16:31,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:31,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:16:31,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:16:31,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:16:31,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:31,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 04:16:31,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:31,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:31,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:31,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:16:31,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:31,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:16:31,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:31,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:16:31,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:16:31,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:16:31,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:31,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:16:31,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1940953213] [2020-10-27 04:16:31,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:16:31,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 04:16:31,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131779731] [2020-10-27 04:16:31,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 04:16:31,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:16:31,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 04:16:31,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-27 04:16:31,801 INFO L87 Difference]: Start difference. First operand 156 states and 252 transitions. Second operand 10 states. [2020-10-27 04:16:32,387 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 04:16:32,702 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-27 04:16:34,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:16:34,485 INFO L93 Difference]: Finished difference Result 268 states and 421 transitions. [2020-10-27 04:16:34,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 04:16:34,487 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 59 [2020-10-27 04:16:34,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:16:34,490 INFO L225 Difference]: With dead ends: 268 [2020-10-27 04:16:34,491 INFO L226 Difference]: Without dead ends: 171 [2020-10-27 04:16:34,493 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-10-27 04:16:34,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-27 04:16:34,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 156. [2020-10-27 04:16:34,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-27 04:16:34,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 225 transitions. [2020-10-27 04:16:34,541 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 225 transitions. Word has length 59 [2020-10-27 04:16:34,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:16:34,542 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 225 transitions. [2020-10-27 04:16:34,542 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 04:16:34,542 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 225 transitions. [2020-10-27 04:16:34,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-27 04:16:34,545 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:16:34,546 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:16:34,546 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 04:16:34,546 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:16:34,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:16:34,546 INFO L82 PathProgramCache]: Analyzing trace with hash -627127477, now seen corresponding path program 1 times [2020-10-27 04:16:34,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:16:34,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1720950624] [2020-10-27 04:16:34,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:16:34,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:34,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:34,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:34,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:36,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:39,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:39,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-27 04:16:39,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:16:39,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 04:16:39,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:39,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:16:39,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-27 04:16:39,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-27 04:16:39,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:16:39,961 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:16:39,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:16:39,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:39,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:39,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:39,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:16:39,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:39,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 04:16:39,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:39,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:16:39,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:16:39,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:16:39,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:40,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:16:40,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:40,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:40,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:40,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 04:16:40,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:40,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 04:16:40,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:40,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:16:40,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:16:40,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 04:16:40,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:40,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:16:40,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:40,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:40,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:40,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:16:40,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:40,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 04:16:40,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:40,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:16:40,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:16:40,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:16:40,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:40,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 04:16:40,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:40,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:40,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:40,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:16:40,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:40,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:16:40,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:40,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:16:40,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:16:40,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:16:40,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:40,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 04:16:40,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:40,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:40,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:40,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:16:40,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:40,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:16:40,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:40,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:16:40,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:16:40,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:16:40,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:40,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 04:16:40,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:40,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:40,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:40,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:16:40,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:40,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:16:40,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:40,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:16:40,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:16:40,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:16:40,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:16:40,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:16:40,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1720950624] [2020-10-27 04:16:40,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:16:40,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:16:40,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526976289] [2020-10-27 04:16:40,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:16:40,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:16:40,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:16:40,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:16:40,388 INFO L87 Difference]: Start difference. First operand 156 states and 225 transitions. Second operand 9 states. [2020-10-27 04:16:40,765 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 04:16:42,866 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 04:16:43,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:16:43,491 INFO L93 Difference]: Finished difference Result 378 states and 566 transitions. [2020-10-27 04:16:43,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 04:16:43,493 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 85 [2020-10-27 04:16:43,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:16:43,503 INFO L225 Difference]: With dead ends: 378 [2020-10-27 04:16:43,503 INFO L226 Difference]: Without dead ends: 287 [2020-10-27 04:16:43,507 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2020-10-27 04:16:43,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2020-10-27 04:16:43,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 247. [2020-10-27 04:16:43,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2020-10-27 04:16:43,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 361 transitions. [2020-10-27 04:16:43,579 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 361 transitions. Word has length 85 [2020-10-27 04:16:43,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:16:43,579 INFO L481 AbstractCegarLoop]: Abstraction has 247 states and 361 transitions. [2020-10-27 04:16:43,579 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:16:43,580 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 361 transitions. [2020-10-27 04:16:43,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-27 04:16:43,584 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:16:43,585 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:16:43,585 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 04:16:43,585 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:16:43,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:16:43,586 INFO L82 PathProgramCache]: Analyzing trace with hash -1361518788, now seen corresponding path program 1 times [2020-10-27 04:16:43,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:16:43,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [905899881] [2020-10-27 04:16:43,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:16:43,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:43,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:43,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:43,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:43,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:44,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:48,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:48,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-27 04:16:48,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:16:48,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-27 04:16:48,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:48,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:16:48,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:16:48,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-27 04:16:48,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:48,984 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:16:48,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:16:48,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:48,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:49,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:49,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:16:49,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:49,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:16:49,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:49,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:16:49,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:16:49,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:16:49,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:16:49,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:16:49,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:49,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:49,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:49,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 04:16:49,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:49,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-27 04:16:49,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:49,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:16:49,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:16:49,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 04:16:49,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:49,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:16:49,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:49,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:49,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:49,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:16:49,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:49,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:16:49,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:49,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:16:49,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-27 04:16:49,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:16:49,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:49,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 04:16:49,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:49,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:49,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:49,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:16:49,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:49,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:16:49,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:49,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:16:49,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:16:49,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:16:49,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:49,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 04:16:49,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:49,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:49,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:49,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:16:49,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:49,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:16:49,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:49,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:16:49,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:16:49,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:16:49,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:49,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-27 04:16:49,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:49,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:49,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:49,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:16:49,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:49,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:16:49,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:49,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:16:49,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:16:49,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:16:49,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:49,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:16:49,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [905899881] [2020-10-27 04:16:49,334 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:16:49,334 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:16:49,334 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117315020] [2020-10-27 04:16:49,335 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:16:49,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:16:49,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:16:49,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:16:49,336 INFO L87 Difference]: Start difference. First operand 247 states and 361 transitions. Second operand 9 states. [2020-10-27 04:16:49,672 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 04:16:50,009 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 04:16:50,331 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 04:16:50,639 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:16:51,530 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:16:53,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:16:53,810 INFO L93 Difference]: Finished difference Result 752 states and 1105 transitions. [2020-10-27 04:16:53,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 04:16:53,811 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2020-10-27 04:16:53,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:16:53,816 INFO L225 Difference]: With dead ends: 752 [2020-10-27 04:16:53,816 INFO L226 Difference]: Without dead ends: 519 [2020-10-27 04:16:53,821 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-10-27 04:16:53,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2020-10-27 04:16:53,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 473. [2020-10-27 04:16:53,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 473 states. [2020-10-27 04:16:53,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 682 transitions. [2020-10-27 04:16:53,888 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 682 transitions. Word has length 87 [2020-10-27 04:16:53,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:16:53,889 INFO L481 AbstractCegarLoop]: Abstraction has 473 states and 682 transitions. [2020-10-27 04:16:53,889 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:16:53,889 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 682 transitions. [2020-10-27 04:16:53,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-27 04:16:53,892 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:16:53,892 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:16:53,893 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 04:16:53,893 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:16:53,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:16:53,893 INFO L82 PathProgramCache]: Analyzing trace with hash -165367955, now seen corresponding path program 1 times [2020-10-27 04:16:53,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:16:53,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1469438493] [2020-10-27 04:16:53,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:16:53,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:53,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:53,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:54,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:54,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:54,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:58,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:58,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:58,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-27 04:16:58,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:16:58,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-27 04:16:58,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:58,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:16:58,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:16:58,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 04:16:58,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:59,245 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:16:59,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:16:59,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:59,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:59,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:59,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:16:59,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:59,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 04:16:59,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:59,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:16:59,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:16:59,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:16:59,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:59,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:16:59,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:59,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:59,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:59,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:59,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:59,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 04:16:59,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 04:16:59,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-27 04:16:59,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:59,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:16:59,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:16:59,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:16:59,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:59,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 04:16:59,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:59,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:59,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:59,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:16:59,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:59,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:16:59,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:59,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:16:59,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:16:59,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:16:59,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:59,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 04:16:59,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:59,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:59,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:59,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:16:59,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:59,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:16:59,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:59,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:16:59,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:16:59,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:16:59,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:59,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-27 04:16:59,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:59,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:59,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:59,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:16:59,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:59,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:16:59,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:59,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:16:59,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:16:59,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:16:59,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:59,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-27 04:16:59,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:16:59,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:16:59,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:16:59,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:16:59,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:16:59,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:16:59,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:16:59,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:16:59,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:16:59,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:16:59,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:16:59,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:16:59,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1469438493] [2020-10-27 04:16:59,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:16:59,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:16:59,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712039362] [2020-10-27 04:16:59,696 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:16:59,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:16:59,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:16:59,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:16:59,698 INFO L87 Difference]: Start difference. First operand 473 states and 682 transitions. Second operand 9 states. [2020-10-27 04:16:59,998 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 04:17:00,278 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 04:17:00,588 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:17:00,892 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 04:17:01,848 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:17:04,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:17:04,269 INFO L93 Difference]: Finished difference Result 1449 states and 2099 transitions. [2020-10-27 04:17:04,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 04:17:04,273 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-10-27 04:17:04,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:17:04,279 INFO L225 Difference]: With dead ends: 1449 [2020-10-27 04:17:04,279 INFO L226 Difference]: Without dead ends: 1001 [2020-10-27 04:17:04,281 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-10-27 04:17:04,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1001 states. [2020-10-27 04:17:04,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1001 to 915. [2020-10-27 04:17:04,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 915 states. [2020-10-27 04:17:04,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 915 states to 915 states and 1299 transitions. [2020-10-27 04:17:04,365 INFO L78 Accepts]: Start accepts. Automaton has 915 states and 1299 transitions. Word has length 88 [2020-10-27 04:17:04,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:17:04,365 INFO L481 AbstractCegarLoop]: Abstraction has 915 states and 1299 transitions. [2020-10-27 04:17:04,365 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:17:04,365 INFO L276 IsEmpty]: Start isEmpty. Operand 915 states and 1299 transitions. [2020-10-27 04:17:04,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-27 04:17:04,368 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:17:04,369 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:17:04,369 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 04:17:04,369 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:17:04,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:17:04,370 INFO L82 PathProgramCache]: Analyzing trace with hash -1862831445, now seen corresponding path program 1 times [2020-10-27 04:17:04,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:17:04,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [426886097] [2020-10-27 04:17:04,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:17:04,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:04,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:04,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:04,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:04,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:04,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:06,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:09,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:09,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-27 04:17:09,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:17:09,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 04:17:09,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:09,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:17:09,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:17:09,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 04:17:09,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:09,728 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:17:09,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:17:09,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:09,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:09,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:09,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:17:09,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:09,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 04:17:09,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:09,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:09,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:17:09,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:09,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:09,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:17:09,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:09,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:09,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:09,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 04:17:09,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:09,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-27 04:17:09,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:09,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:17:09,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:17:09,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:17:09,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:09,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:17:09,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:09,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:09,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:09,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:17:09,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:09,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:17:09,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:09,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:17:09,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 04:17:09,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:17:09,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:09,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-27 04:17:10,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:10,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:10,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:10,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:17:10,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:10,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:17:10,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:10,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:10,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:17:10,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:10,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:10,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 04:17:10,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:10,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:10,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:10,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:17:10,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:10,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:17:10,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:10,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:10,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:17:10,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:10,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:10,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 04:17:10,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:10,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:10,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:10,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:17:10,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:10,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:17:10,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:10,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:10,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:17:10,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:10,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:10,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:17:10,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [426886097] [2020-10-27 04:17:10,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:17:10,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:17:10,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533820103] [2020-10-27 04:17:10,102 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:17:10,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:17:10,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:17:10,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:17:10,103 INFO L87 Difference]: Start difference. First operand 915 states and 1299 transitions. Second operand 9 states. [2020-10-27 04:17:10,410 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 04:17:10,700 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-27 04:17:11,119 WARN L193 SmtUtils]: Spent 291.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 04:17:11,423 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:17:12,209 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:17:14,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:17:14,706 INFO L93 Difference]: Finished difference Result 2755 states and 3921 transitions. [2020-10-27 04:17:14,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 04:17:14,707 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 89 [2020-10-27 04:17:14,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:17:14,717 INFO L225 Difference]: With dead ends: 2755 [2020-10-27 04:17:14,718 INFO L226 Difference]: Without dead ends: 1900 [2020-10-27 04:17:14,721 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2020-10-27 04:17:14,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1900 states. [2020-10-27 04:17:14,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1900 to 1779. [2020-10-27 04:17:14,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1779 states. [2020-10-27 04:17:14,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1779 states to 1779 states and 2471 transitions. [2020-10-27 04:17:14,875 INFO L78 Accepts]: Start accepts. Automaton has 1779 states and 2471 transitions. Word has length 89 [2020-10-27 04:17:14,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:17:14,875 INFO L481 AbstractCegarLoop]: Abstraction has 1779 states and 2471 transitions. [2020-10-27 04:17:14,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:17:14,875 INFO L276 IsEmpty]: Start isEmpty. Operand 1779 states and 2471 transitions. [2020-10-27 04:17:14,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-27 04:17:14,880 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:17:14,880 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:17:14,881 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 04:17:14,881 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:17:14,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:17:14,881 INFO L82 PathProgramCache]: Analyzing trace with hash 1916854984, now seen corresponding path program 1 times [2020-10-27 04:17:14,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:17:14,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1160850796] [2020-10-27 04:17:14,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:17:14,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:14,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:14,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:15,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:15,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:15,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:19,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:19,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-27 04:17:19,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:17:19,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 04:17:19,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:19,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:17:19,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 04:17:19,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 04:17:19,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:20,226 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:17:20,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:17:20,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:20,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:20,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:20,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:17:20,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:20,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:17:20,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:20,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:20,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:17:20,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:20,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:20,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:17:20,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:20,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:20,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:20,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:20,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:17:20,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:17:20,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-27 04:17:20,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:20,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:17:20,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-27 04:17:20,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 04:17:20,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:20,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-27 04:17:20,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:20,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:20,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:20,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:17:20,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:20,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:17:20,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:20,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:20,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 04:17:20,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:20,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:20,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-27 04:17:20,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:20,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:20,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:20,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:17:20,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:20,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:17:20,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:20,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:20,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:17:20,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:20,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:20,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 04:17:20,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:20,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:20,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:20,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:17:20,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:20,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:17:20,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:20,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:20,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:17:20,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:20,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:20,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 04:17:20,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:20,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:20,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:20,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:17:20,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:20,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:17:20,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:20,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:20,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:17:20,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:20,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:20,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:17:20,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1160850796] [2020-10-27 04:17:20,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:17:20,699 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 04:17:20,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325791013] [2020-10-27 04:17:20,700 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 04:17:20,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:17:20,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 04:17:20,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-27 04:17:20,709 INFO L87 Difference]: Start difference. First operand 1779 states and 2471 transitions. Second operand 8 states. [2020-10-27 04:17:21,023 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 04:17:21,326 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:17:22,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:17:22,853 INFO L93 Difference]: Finished difference Result 2313 states and 3200 transitions. [2020-10-27 04:17:22,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 04:17:22,853 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 89 [2020-10-27 04:17:22,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:17:22,866 INFO L225 Difference]: With dead ends: 2313 [2020-10-27 04:17:22,866 INFO L226 Difference]: Without dead ends: 1439 [2020-10-27 04:17:22,870 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-27 04:17:22,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1439 states. [2020-10-27 04:17:22,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1439 to 1349. [2020-10-27 04:17:22,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1349 states. [2020-10-27 04:17:22,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1349 states to 1349 states and 1875 transitions. [2020-10-27 04:17:22,998 INFO L78 Accepts]: Start accepts. Automaton has 1349 states and 1875 transitions. Word has length 89 [2020-10-27 04:17:22,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:17:22,999 INFO L481 AbstractCegarLoop]: Abstraction has 1349 states and 1875 transitions. [2020-10-27 04:17:22,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 04:17:22,999 INFO L276 IsEmpty]: Start isEmpty. Operand 1349 states and 1875 transitions. [2020-10-27 04:17:23,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-27 04:17:23,005 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:17:23,005 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:17:23,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 04:17:23,006 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:17:23,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:17:23,006 INFO L82 PathProgramCache]: Analyzing trace with hash 1640384076, now seen corresponding path program 1 times [2020-10-27 04:17:23,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:17:23,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [884315747] [2020-10-27 04:17:23,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:17:23,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:23,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:23,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:23,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:23,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:23,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:23,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:24,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:28,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:28,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-27 04:17:28,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 04:17:28,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 04:17:28,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:28,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:17:28,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:17:28,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 04:17:28,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:28,340 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:17:28,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:17:28,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:28,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:28,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:28,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:17:28,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:28,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:17:28,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:28,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:28,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:17:28,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:28,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:28,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:17:28,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:28,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:28,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:28,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:28,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:28,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 04:17:28,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 04:17:28,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-10-27 04:17:28,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:28,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:17:28,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:17:28,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 04:17:28,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:28,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 04:17:28,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:28,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:28,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:28,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:17:28,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:28,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:17:28,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:28,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:17:28,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:17:28,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 04:17:28,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:28,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-27 04:17:28,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:28,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:28,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:28,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:17:28,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:28,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:17:28,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:28,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:28,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:17:28,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:28,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:28,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 04:17:28,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:28,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:28,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:28,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:17:28,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:28,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:17:28,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:28,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:28,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:17:28,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:28,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:28,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 04:17:28,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:28,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:28,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:28,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:17:28,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:28,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:17:28,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:28,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:28,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:17:28,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:28,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:28,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:17:28,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [884315747] [2020-10-27 04:17:28,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:17:28,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:17:28,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887455025] [2020-10-27 04:17:28,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:17:28,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:17:28,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:17:28,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:17:28,868 INFO L87 Difference]: Start difference. First operand 1349 states and 1875 transitions. Second operand 9 states. [2020-10-27 04:17:29,191 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 04:17:29,519 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-27 04:17:29,884 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:17:30,700 WARN L193 SmtUtils]: Spent 630.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 183 [2020-10-27 04:17:31,573 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:17:34,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:17:34,749 INFO L93 Difference]: Finished difference Result 4424 states and 6173 transitions. [2020-10-27 04:17:34,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 04:17:34,750 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 90 [2020-10-27 04:17:34,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:17:34,767 INFO L225 Difference]: With dead ends: 4424 [2020-10-27 04:17:34,768 INFO L226 Difference]: Without dead ends: 3278 [2020-10-27 04:17:34,772 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-27 04:17:34,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3278 states. [2020-10-27 04:17:35,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3278 to 3146. [2020-10-27 04:17:35,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3146 states. [2020-10-27 04:17:35,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3146 states to 3146 states and 4302 transitions. [2020-10-27 04:17:35,039 INFO L78 Accepts]: Start accepts. Automaton has 3146 states and 4302 transitions. Word has length 90 [2020-10-27 04:17:35,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:17:35,041 INFO L481 AbstractCegarLoop]: Abstraction has 3146 states and 4302 transitions. [2020-10-27 04:17:35,041 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:17:35,041 INFO L276 IsEmpty]: Start isEmpty. Operand 3146 states and 4302 transitions. [2020-10-27 04:17:35,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-27 04:17:35,052 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:17:35,052 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:17:35,052 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 04:17:35,052 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:17:35,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:17:35,053 INFO L82 PathProgramCache]: Analyzing trace with hash -2082035004, now seen corresponding path program 1 times [2020-10-27 04:17:35,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:17:35,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1057891306] [2020-10-27 04:17:35,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:17:35,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:35,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:35,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:35,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:35,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:35,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:35,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:36,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:40,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:40,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 04:17:40,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 04:17:40,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 04:17:40,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:40,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 04:17:40,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:17:40,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 04:17:40,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:40,387 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:17:40,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:17:40,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:40,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:40,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:40,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:17:40,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:40,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 04:17:40,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:40,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:17:40,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:17:40,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:17:40,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:40,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:17:40,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:40,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:40,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:40,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:40,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:40,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 04:17:40,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 04:17:40,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-27 04:17:40,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:40,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:17:40,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:17:40,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 04:17:40,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:40,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 04:17:40,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:40,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:40,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:40,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:17:40,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:40,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 04:17:40,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:40,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:17:40,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:17:40,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 04:17:40,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:40,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 04:17:40,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:40,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:40,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:40,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:17:40,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:40,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:17:40,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:40,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:40,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:17:40,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:40,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:40,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 04:17:40,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:40,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:40,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:40,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:17:40,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:40,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:17:40,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:40,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:40,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:17:40,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:40,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:40,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 04:17:40,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:40,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:40,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:40,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:17:40,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:40,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:17:40,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:40,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:40,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:17:40,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:40,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:40,927 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:17:40,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1057891306] [2020-10-27 04:17:40,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:17:40,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 04:17:40,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579913473] [2020-10-27 04:17:40,928 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 04:17:40,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:17:40,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 04:17:40,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-27 04:17:40,929 INFO L87 Difference]: Start difference. First operand 3146 states and 4302 transitions. Second operand 14 states. [2020-10-27 04:17:41,572 WARN L193 SmtUtils]: Spent 564.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 181 [2020-10-27 04:17:41,863 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 04:17:42,478 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-27 04:17:43,332 WARN L193 SmtUtils]: Spent 603.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 183 [2020-10-27 04:17:43,573 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 77 [2020-10-27 04:17:43,779 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 78 [2020-10-27 04:17:43,987 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 80 [2020-10-27 04:17:44,202 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 77 [2020-10-27 04:17:44,377 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 73 [2020-10-27 04:17:44,882 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2020-10-27 04:17:45,336 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2020-10-27 04:17:46,242 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 75 [2020-10-27 04:17:46,578 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2020-10-27 04:17:46,945 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2020-10-27 04:17:47,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:17:47,097 INFO L93 Difference]: Finished difference Result 5465 states and 7603 transitions. [2020-10-27 04:17:47,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 04:17:47,104 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 91 [2020-10-27 04:17:47,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:17:47,128 INFO L225 Difference]: With dead ends: 5465 [2020-10-27 04:17:47,128 INFO L226 Difference]: Without dead ends: 4880 [2020-10-27 04:17:47,132 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=226, Invalid=644, Unknown=0, NotChecked=0, Total=870 [2020-10-27 04:17:47,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4880 states. [2020-10-27 04:17:47,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4880 to 3553. [2020-10-27 04:17:47,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3553 states. [2020-10-27 04:17:47,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3553 states to 3553 states and 4874 transitions. [2020-10-27 04:17:47,514 INFO L78 Accepts]: Start accepts. Automaton has 3553 states and 4874 transitions. Word has length 91 [2020-10-27 04:17:47,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:17:47,515 INFO L481 AbstractCegarLoop]: Abstraction has 3553 states and 4874 transitions. [2020-10-27 04:17:47,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 04:17:47,515 INFO L276 IsEmpty]: Start isEmpty. Operand 3553 states and 4874 transitions. [2020-10-27 04:17:47,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-27 04:17:47,525 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:17:47,525 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:17:47,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 04:17:47,526 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:17:47,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:17:47,527 INFO L82 PathProgramCache]: Analyzing trace with hash -1380435130, now seen corresponding path program 1 times [2020-10-27 04:17:47,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:17:47,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [490699808] [2020-10-27 04:17:47,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:17:47,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:47,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:47,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:47,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:47,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:47,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:48,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:50,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:52,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:52,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 04:17:52,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 04:17:52,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 04:17:52,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:52,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:17:52,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-27 04:17:52,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 04:17:52,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:52,832 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:17:52,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:17:52,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:52,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:52,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:52,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:17:52,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:52,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:17:52,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:52,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:52,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:17:52,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:52,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:52,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:17:52,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:52,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:52,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:52,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:52,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 04:17:52,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:17:52,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-27 04:17:52,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:52,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:17:52,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 04:17:52,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 04:17:52,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:53,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 04:17:53,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:53,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:53,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:53,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:17:53,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:53,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:17:53,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:53,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:53,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 04:17:53,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:53,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:53,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 04:17:53,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:53,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:53,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:53,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:17:53,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:53,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:17:53,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:53,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:53,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:17:53,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:53,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:53,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 04:17:53,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:53,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:53,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:53,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:17:53,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:53,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:17:53,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:53,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:53,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:17:53,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:53,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:53,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 04:17:53,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:53,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:53,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:53,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:17:53,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:53,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:17:53,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:53,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:53,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:17:53,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:53,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:53,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:17:53,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [490699808] [2020-10-27 04:17:53,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:17:53,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 04:17:53,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970853312] [2020-10-27 04:17:53,127 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 04:17:53,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:17:53,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 04:17:53,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-27 04:17:53,127 INFO L87 Difference]: Start difference. First operand 3553 states and 4874 transitions. Second operand 8 states. [2020-10-27 04:17:53,567 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 04:17:53,878 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:17:55,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:17:55,492 INFO L93 Difference]: Finished difference Result 4329 states and 5894 transitions. [2020-10-27 04:17:55,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 04:17:55,494 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 91 [2020-10-27 04:17:55,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:17:55,507 INFO L225 Difference]: With dead ends: 4329 [2020-10-27 04:17:55,507 INFO L226 Difference]: Without dead ends: 2625 [2020-10-27 04:17:55,513 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-27 04:17:55,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2625 states. [2020-10-27 04:17:55,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2625 to 2511. [2020-10-27 04:17:55,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2511 states. [2020-10-27 04:17:55,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2511 states to 2511 states and 3476 transitions. [2020-10-27 04:17:55,741 INFO L78 Accepts]: Start accepts. Automaton has 2511 states and 3476 transitions. Word has length 91 [2020-10-27 04:17:55,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:17:55,741 INFO L481 AbstractCegarLoop]: Abstraction has 2511 states and 3476 transitions. [2020-10-27 04:17:55,741 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 04:17:55,741 INFO L276 IsEmpty]: Start isEmpty. Operand 2511 states and 3476 transitions. [2020-10-27 04:17:55,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-27 04:17:55,748 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:17:55,748 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:17:55,748 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 04:17:55,748 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:17:55,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:17:55,749 INFO L82 PathProgramCache]: Analyzing trace with hash 311519932, now seen corresponding path program 1 times [2020-10-27 04:17:55,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:17:55,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [612557444] [2020-10-27 04:17:55,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:17:55,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:55,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:55,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:55,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:57,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:57,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 04:17:57,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 04:17:57,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2082 [2020-10-27 04:17:57,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:57,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:17:57,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-27 04:17:57,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 04:17:57,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:58,162 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:17:58,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:17:58,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:58,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:58,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:58,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:17:58,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:58,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:17:58,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:58,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:58,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:17:58,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:58,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:58,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:17:58,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:58,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:58,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:58,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 04:17:58,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:58,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 04:17:58,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:58,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:17:58,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:17:58,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 04:17:58,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:58,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 04:17:58,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:58,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:58,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:58,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 04:17:58,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:58,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:17:58,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:58,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:17:58,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:17:58,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 04:17:58,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:58,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 04:17:58,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:58,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:58,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:58,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:17:58,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:58,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:17:58,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:58,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:17:58,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:17:58,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:17:58,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:58,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 04:17:58,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:58,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:58,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:58,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:17:58,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:58,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:17:58,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:58,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:58,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:17:58,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:58,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:58,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 04:17:58,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:17:58,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:17:58,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:17:58,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:17:58,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:17:58,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:17:58,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:17:58,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:17:58,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:17:58,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:17:58,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:17:58,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:17:58,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [612557444] [2020-10-27 04:17:58,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:17:58,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:17:58,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427312574] [2020-10-27 04:17:58,432 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:17:58,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:17:58,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:17:58,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:17:58,433 INFO L87 Difference]: Start difference. First operand 2511 states and 3476 transitions. Second operand 9 states. [2020-10-27 04:17:58,764 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 04:18:01,518 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 04:18:02,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:18:02,001 INFO L93 Difference]: Finished difference Result 6249 states and 8798 transitions. [2020-10-27 04:18:02,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 04:18:02,004 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 91 [2020-10-27 04:18:02,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:18:02,026 INFO L225 Difference]: With dead ends: 6249 [2020-10-27 04:18:02,027 INFO L226 Difference]: Without dead ends: 4385 [2020-10-27 04:18:02,036 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2020-10-27 04:18:02,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4385 states. [2020-10-27 04:18:02,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4385 to 4107. [2020-10-27 04:18:02,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4107 states. [2020-10-27 04:18:02,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4107 states to 4107 states and 5720 transitions. [2020-10-27 04:18:02,388 INFO L78 Accepts]: Start accepts. Automaton has 4107 states and 5720 transitions. Word has length 91 [2020-10-27 04:18:02,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:18:02,388 INFO L481 AbstractCegarLoop]: Abstraction has 4107 states and 5720 transitions. [2020-10-27 04:18:02,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:18:02,388 INFO L276 IsEmpty]: Start isEmpty. Operand 4107 states and 5720 transitions. [2020-10-27 04:18:02,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-27 04:18:02,395 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:18:02,395 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:18:02,395 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 04:18:02,395 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:18:02,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:18:02,396 INFO L82 PathProgramCache]: Analyzing trace with hash -1795147853, now seen corresponding path program 1 times [2020-10-27 04:18:02,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:18:02,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1332767814] [2020-10-27 04:18:02,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:18:02,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:02,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:02,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:02,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:02,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:02,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:02,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:02,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:07,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:07,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 04:18:07,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 04:18:07,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 04:18:07,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:07,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 04:18:07,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:18:07,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-27 04:18:07,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:07,728 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:18:07,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:18:07,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:07,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:07,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:07,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:18:07,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:07,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 04:18:07,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:07,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:18:07,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:18:07,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:18:07,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:07,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:18:07,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:07,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:07,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:07,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:07,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:07,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 04:18:07,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 04:18:07,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-27 04:18:07,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:07,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:18:07,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:18:07,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 04:18:07,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:07,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 04:18:07,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:07,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:07,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:07,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:18:07,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:07,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 04:18:07,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:07,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:18:07,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:18:07,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 04:18:07,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:08,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 04:18:08,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:08,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:08,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:08,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:18:08,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:08,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:18:08,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:08,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:08,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 04:18:08,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:08,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:08,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-27 04:18:08,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:08,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:08,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:08,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:18:08,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:08,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:18:08,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:08,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:08,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:18:08,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:08,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:08,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-27 04:18:08,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:08,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:08,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:08,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:18:08,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:08,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:18:08,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:08,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:08,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:18:08,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:08,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:08,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:18:08,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1332767814] [2020-10-27 04:18:08,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:18:08,145 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 04:18:08,145 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839778949] [2020-10-27 04:18:08,145 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 04:18:08,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:18:08,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 04:18:08,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-27 04:18:08,146 INFO L87 Difference]: Start difference. First operand 4107 states and 5720 transitions. Second operand 14 states. [2020-10-27 04:18:08,821 WARN L193 SmtUtils]: Spent 583.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 181 [2020-10-27 04:18:09,161 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 04:18:09,802 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-27 04:18:10,631 WARN L193 SmtUtils]: Spent 573.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 183 [2020-10-27 04:18:10,859 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 77 [2020-10-27 04:18:11,121 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 78 [2020-10-27 04:18:11,348 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 80 [2020-10-27 04:18:11,776 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2020-10-27 04:18:12,198 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2020-10-27 04:18:13,154 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 75 [2020-10-27 04:18:13,491 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2020-10-27 04:18:13,900 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2020-10-27 04:18:14,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:18:14,100 INFO L93 Difference]: Finished difference Result 6891 states and 9687 transitions. [2020-10-27 04:18:14,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 04:18:14,101 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 93 [2020-10-27 04:18:14,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:18:14,129 INFO L225 Difference]: With dead ends: 6891 [2020-10-27 04:18:14,129 INFO L226 Difference]: Without dead ends: 5655 [2020-10-27 04:18:14,134 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=197, Invalid=559, Unknown=0, NotChecked=0, Total=756 [2020-10-27 04:18:14,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5655 states. [2020-10-27 04:18:14,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5655 to 4267. [2020-10-27 04:18:14,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4267 states. [2020-10-27 04:18:14,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4267 states to 4267 states and 5923 transitions. [2020-10-27 04:18:14,566 INFO L78 Accepts]: Start accepts. Automaton has 4267 states and 5923 transitions. Word has length 93 [2020-10-27 04:18:14,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:18:14,567 INFO L481 AbstractCegarLoop]: Abstraction has 4267 states and 5923 transitions. [2020-10-27 04:18:14,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 04:18:14,567 INFO L276 IsEmpty]: Start isEmpty. Operand 4267 states and 5923 transitions. [2020-10-27 04:18:14,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-27 04:18:14,574 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:18:14,574 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:18:14,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 04:18:14,574 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:18:14,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:18:14,575 INFO L82 PathProgramCache]: Analyzing trace with hash -1520388239, now seen corresponding path program 1 times [2020-10-27 04:18:14,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:18:14,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1223274962] [2020-10-27 04:18:14,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:18:14,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:14,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:14,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:14,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:14,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:15,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:15,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:19,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:19,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 04:18:19,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:18:19,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 04:18:19,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:19,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:18:19,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 04:18:19,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 04:18:19,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:19,888 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:18:19,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:18:19,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:19,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:19,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:19,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:18:19,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:19,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:18:19,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:19,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:19,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:18:19,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:19,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:19,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:18:19,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:19,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:19,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:19,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:19,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 04:18:19,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:18:19,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-27 04:18:19,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:19,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:18:19,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:18:19,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 04:18:19,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:20,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 04:18:20,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:20,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:20,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:20,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:18:20,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:20,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:18:20,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:20,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:20,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 04:18:20,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:20,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:20,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 04:18:20,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:20,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:20,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:20,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:18:20,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:20,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:18:20,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:20,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:20,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 04:18:20,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:20,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:20,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-27 04:18:20,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:20,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:20,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:20,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:18:20,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:20,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:18:20,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:20,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:20,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:18:20,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:20,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:20,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-27 04:18:20,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:20,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:20,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:20,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:18:20,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:20,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:18:20,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:20,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:20,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:18:20,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:20,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:20,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:18:20,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1223274962] [2020-10-27 04:18:20,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:18:20,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 04:18:20,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273306896] [2020-10-27 04:18:20,116 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 04:18:20,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:18:20,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 04:18:20,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:18:20,117 INFO L87 Difference]: Start difference. First operand 4267 states and 5923 transitions. Second operand 7 states. [2020-10-27 04:18:20,524 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-27 04:18:22,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:18:22,229 INFO L93 Difference]: Finished difference Result 8693 states and 11945 transitions. [2020-10-27 04:18:22,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 04:18:22,230 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 93 [2020-10-27 04:18:22,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:18:22,249 INFO L225 Difference]: With dead ends: 8693 [2020-10-27 04:18:22,250 INFO L226 Difference]: Without dead ends: 4726 [2020-10-27 04:18:22,260 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:18:22,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4726 states. [2020-10-27 04:18:22,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4726 to 4267. [2020-10-27 04:18:22,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4267 states. [2020-10-27 04:18:22,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4267 states to 4267 states and 5920 transitions. [2020-10-27 04:18:22,721 INFO L78 Accepts]: Start accepts. Automaton has 4267 states and 5920 transitions. Word has length 93 [2020-10-27 04:18:22,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:18:22,721 INFO L481 AbstractCegarLoop]: Abstraction has 4267 states and 5920 transitions. [2020-10-27 04:18:22,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 04:18:22,721 INFO L276 IsEmpty]: Start isEmpty. Operand 4267 states and 5920 transitions. [2020-10-27 04:18:22,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-27 04:18:22,727 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:18:22,727 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] [2020-10-27 04:18:22,727 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 04:18:22,727 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:18:22,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:18:22,728 INFO L82 PathProgramCache]: Analyzing trace with hash 2028614350, now seen corresponding path program 1 times [2020-10-27 04:18:22,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:18:22,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [76538201] [2020-10-27 04:18:22,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:18:22,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:22,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:22,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:22,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:22,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:23,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:23,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:27,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:27,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-27 04:18:27,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:18:27,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 04:18:27,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:27,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:18:27,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 04:18:27,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 04:18:27,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:28,021 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:18:28,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:18:28,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:28,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:28,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:28,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:18:28,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:28,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:18:28,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:28,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:28,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:18:28,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:28,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:28,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:18:28,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:28,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:28,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:28,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:28,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:18:28,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:18:28,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-27 04:18:28,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:28,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:18:28,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-10-27 04:18:28,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 04:18:28,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:28,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-27 04:18:28,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:28,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:28,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:28,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:18:28,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:28,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:18:28,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:28,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:28,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 04:18:28,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:28,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:28,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 04:18:28,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:28,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:28,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:28,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:18:28,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:28,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:18:28,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:28,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:28,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-10-27 04:18:28,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:28,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:28,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-27 04:18:28,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:28,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:28,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:28,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:18:28,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:28,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:18:28,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:28,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:28,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:18:28,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:28,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:28,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 04:18:28,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:28,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:28,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:28,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:18:28,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:28,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:18:28,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:28,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:28,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:18:28,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:28,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:28,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:18:28,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [76538201] [2020-10-27 04:18:28,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:18:28,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 04:18:28,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450215978] [2020-10-27 04:18:28,352 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 04:18:28,352 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:18:28,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 04:18:28,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-27 04:18:28,352 INFO L87 Difference]: Start difference. First operand 4267 states and 5920 transitions. Second operand 8 states. [2020-10-27 04:18:28,740 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 04:18:29,057 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:18:30,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:18:30,776 INFO L93 Difference]: Finished difference Result 8562 states and 11832 transitions. [2020-10-27 04:18:30,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 04:18:30,777 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 94 [2020-10-27 04:18:30,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:18:30,793 INFO L225 Difference]: With dead ends: 8562 [2020-10-27 04:18:30,793 INFO L226 Difference]: Without dead ends: 4357 [2020-10-27 04:18:30,804 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-27 04:18:30,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4357 states. [2020-10-27 04:18:31,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4357 to 4234. [2020-10-27 04:18:31,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4234 states. [2020-10-27 04:18:31,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4234 states to 4234 states and 5869 transitions. [2020-10-27 04:18:31,225 INFO L78 Accepts]: Start accepts. Automaton has 4234 states and 5869 transitions. Word has length 94 [2020-10-27 04:18:31,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:18:31,225 INFO L481 AbstractCegarLoop]: Abstraction has 4234 states and 5869 transitions. [2020-10-27 04:18:31,225 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 04:18:31,225 INFO L276 IsEmpty]: Start isEmpty. Operand 4234 states and 5869 transitions. [2020-10-27 04:18:31,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-27 04:18:31,231 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:18:31,232 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] [2020-10-27 04:18:31,232 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 04:18:31,232 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:18:31,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:18:31,232 INFO L82 PathProgramCache]: Analyzing trace with hash -90560171, now seen corresponding path program 1 times [2020-10-27 04:18:31,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:18:31,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [492395706] [2020-10-27 04:18:31,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:18:31,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:31,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:31,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:31,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:31,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:31,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:31,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:36,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:36,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-27 04:18:36,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:18:36,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 04:18:36,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:36,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:18:36,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:18:36,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-27 04:18:36,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:36,580 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:18:36,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:18:36,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:36,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:36,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:36,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:18:36,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:36,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:18:36,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:36,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:36,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:18:36,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:36,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:36,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:18:36,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:36,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:36,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:36,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:36,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:18:36,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:18:36,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 04:18:36,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:36,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:18:36,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:18:36,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:18:36,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:36,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-27 04:18:36,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:36,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:36,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:36,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:18:36,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:36,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:18:36,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:36,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:18:36,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:18:36,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:18:36,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:36,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 04:18:36,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:36,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:36,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:36,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 04:18:36,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:36,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:18:36,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:36,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:18:36,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:18:36,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 04:18:36,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:36,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-27 04:18:36,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:36,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:36,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:36,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:18:36,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:36,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:18:36,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:36,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:36,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:18:36,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:36,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:36,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 04:18:36,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:36,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:36,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:36,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:18:36,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:36,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:18:36,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:36,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:36,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:18:36,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:36,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:36,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:18:36,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [492395706] [2020-10-27 04:18:36,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:18:36,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:18:36,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996819813] [2020-10-27 04:18:36,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:18:36,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:18:36,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:18:36,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:18:36,901 INFO L87 Difference]: Start difference. First operand 4234 states and 5869 transitions. Second operand 9 states. [2020-10-27 04:18:37,274 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 04:18:37,628 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 04:18:38,052 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-27 04:18:38,698 WARN L193 SmtUtils]: Spent 626.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 183 [2020-10-27 04:18:39,802 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:18:43,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:18:43,334 INFO L93 Difference]: Finished difference Result 11460 states and 16084 transitions. [2020-10-27 04:18:43,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 04:18:43,335 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 94 [2020-10-27 04:18:43,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:18:43,364 INFO L225 Difference]: With dead ends: 11460 [2020-10-27 04:18:43,364 INFO L226 Difference]: Without dead ends: 7777 [2020-10-27 04:18:43,378 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-27 04:18:43,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7777 states. [2020-10-27 04:18:44,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7777 to 7497. [2020-10-27 04:18:44,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7497 states. [2020-10-27 04:18:44,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7497 states to 7497 states and 10293 transitions. [2020-10-27 04:18:44,066 INFO L78 Accepts]: Start accepts. Automaton has 7497 states and 10293 transitions. Word has length 94 [2020-10-27 04:18:44,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:18:44,066 INFO L481 AbstractCegarLoop]: Abstraction has 7497 states and 10293 transitions. [2020-10-27 04:18:44,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:18:44,067 INFO L276 IsEmpty]: Start isEmpty. Operand 7497 states and 10293 transitions. [2020-10-27 04:18:44,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-27 04:18:44,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:18:44,076 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] [2020-10-27 04:18:44,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 04:18:44,076 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:18:44,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:18:44,076 INFO L82 PathProgramCache]: Analyzing trace with hash -1201398308, now seen corresponding path program 1 times [2020-10-27 04:18:44,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:18:44,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2078451468] [2020-10-27 04:18:44,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:18:44,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:44,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:44,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:44,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:44,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:44,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:49,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:49,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-27 04:18:49,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:18:49,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 04:18:49,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:49,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:18:49,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:18:49,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-27 04:18:49,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:49,407 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:18:49,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:18:49,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:49,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:49,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:49,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:18:49,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:49,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:18:49,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:49,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:49,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:18:49,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:49,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:49,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:18:49,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:49,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:49,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:49,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:49,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:18:49,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:18:49,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-27 04:18:49,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:49,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:18:49,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:18:49,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 04:18:49,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:49,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-27 04:18:49,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:49,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:49,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:49,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:18:49,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:49,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:18:49,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:49,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:18:49,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:18:49,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:18:49,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:49,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 04:18:49,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:49,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:49,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:49,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:18:49,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:49,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:18:49,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:49,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:18:49,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 04:18:49,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:18:49,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:49,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-27 04:18:49,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:49,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:49,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:49,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:18:49,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:49,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:18:49,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:49,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:49,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:18:49,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:49,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:49,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 04:18:49,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:49,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:49,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:18:49,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:18:49,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:18:49,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:18:49,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:18:49,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:18:49,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:18:49,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:18:49,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:18:49,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:18:49,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2078451468] [2020-10-27 04:18:49,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:18:49,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:18:49,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766564992] [2020-10-27 04:18:49,745 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:18:49,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:18:49,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:18:49,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:18:49,746 INFO L87 Difference]: Start difference. First operand 7497 states and 10293 transitions. Second operand 9 states. [2020-10-27 04:18:50,106 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 04:18:50,463 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 04:18:50,838 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-27 04:18:51,867 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:18:55,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:18:55,659 INFO L93 Difference]: Finished difference Result 17778 states and 24841 transitions. [2020-10-27 04:18:55,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 04:18:55,660 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 95 [2020-10-27 04:18:55,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:18:55,701 INFO L225 Difference]: With dead ends: 17778 [2020-10-27 04:18:55,701 INFO L226 Difference]: Without dead ends: 11606 [2020-10-27 04:18:55,718 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=121, Invalid=341, Unknown=0, NotChecked=0, Total=462 [2020-10-27 04:18:55,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11606 states. [2020-10-27 04:18:56,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11606 to 11275. [2020-10-27 04:18:56,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11275 states. [2020-10-27 04:18:56,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11275 states to 11275 states and 15309 transitions. [2020-10-27 04:18:56,523 INFO L78 Accepts]: Start accepts. Automaton has 11275 states and 15309 transitions. Word has length 95 [2020-10-27 04:18:56,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:18:56,523 INFO L481 AbstractCegarLoop]: Abstraction has 11275 states and 15309 transitions. [2020-10-27 04:18:56,524 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:18:56,524 INFO L276 IsEmpty]: Start isEmpty. Operand 11275 states and 15309 transitions. [2020-10-27 04:18:56,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-27 04:18:56,533 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:18:56,533 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] [2020-10-27 04:18:56,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 04:18:56,534 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:18:56,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:18:56,534 INFO L82 PathProgramCache]: Analyzing trace with hash -747679993, now seen corresponding path program 1 times [2020-10-27 04:18:56,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:18:56,534 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [973827552] [2020-10-27 04:18:56,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:18:56,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:18:56,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:56,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:56,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:56,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:18:56,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:01,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:01,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 04:19:01,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 04:19:01,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 04:19:01,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:01,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:19:01,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 04:19:01,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-27 04:19:01,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:01,865 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:19:01,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:19:01,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:01,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:01,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:01,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:19:01,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:01,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:19:01,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:01,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:19:01,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:19:01,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:19:01,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:01,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:19:01,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:01,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:01,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:01,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:01,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:01,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 04:19:01,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 04:19:01,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-27 04:19:01,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:01,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:19:01,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:19:01,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:19:01,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:02,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 04:19:02,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:02,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:02,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:02,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 04:19:02,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:02,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:19:02,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:02,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:19:02,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:19:02,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 04:19:02,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:02,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 04:19:02,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:02,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:02,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:02,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:19:02,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:02,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:19:02,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:02,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:19:02,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-27 04:19:02,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 04:19:02,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:02,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 04:19:02,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:02,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:02,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:02,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:19:02,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:02,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:19:02,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:02,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:19:02,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:19:02,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:19:02,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:02,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-27 04:19:02,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:02,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:02,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:02,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:19:02,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:02,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:19:02,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:02,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:19:02,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:19:02,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:19:02,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:02,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:19:02,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [973827552] [2020-10-27 04:19:02,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:19:02,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:19:02,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100142345] [2020-10-27 04:19:02,324 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:19:02,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:19:02,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:19:02,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:19:02,325 INFO L87 Difference]: Start difference. First operand 11275 states and 15309 transitions. Second operand 9 states. [2020-10-27 04:19:02,693 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 04:19:03,056 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:19:03,471 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 04:19:03,949 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 04:19:05,006 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-27 04:19:09,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:19:09,515 INFO L93 Difference]: Finished difference Result 21498 states and 29084 transitions. [2020-10-27 04:19:09,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 04:19:09,515 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 96 [2020-10-27 04:19:09,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:19:09,565 INFO L225 Difference]: With dead ends: 21498 [2020-10-27 04:19:09,565 INFO L226 Difference]: Without dead ends: 14027 [2020-10-27 04:19:09,586 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-10-27 04:19:09,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14027 states. [2020-10-27 04:19:10,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14027 to 13412. [2020-10-27 04:19:10,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13412 states. [2020-10-27 04:19:10,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13412 states to 13412 states and 18006 transitions. [2020-10-27 04:19:10,884 INFO L78 Accepts]: Start accepts. Automaton has 13412 states and 18006 transitions. Word has length 96 [2020-10-27 04:19:10,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:19:10,885 INFO L481 AbstractCegarLoop]: Abstraction has 13412 states and 18006 transitions. [2020-10-27 04:19:10,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:19:10,885 INFO L276 IsEmpty]: Start isEmpty. Operand 13412 states and 18006 transitions. [2020-10-27 04:19:10,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-27 04:19:10,896 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:19:10,896 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] [2020-10-27 04:19:10,896 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 04:19:10,896 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:19:10,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:19:10,897 INFO L82 PathProgramCache]: Analyzing trace with hash -2044618192, now seen corresponding path program 1 times [2020-10-27 04:19:10,897 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:19:10,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1513861458] [2020-10-27 04:19:10,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:19:10,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:10,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:10,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:11,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:11,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:15,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:15,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 04:19:15,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:19:15,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 04:19:15,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:15,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:19:15,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-27 04:19:15,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 04:19:15,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:16,299 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:19:16,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:19:16,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:16,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:16,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:16,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:19:16,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:16,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:19:16,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:16,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:19:16,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:19:16,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:19:16,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:16,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:19:16,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:16,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:16,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:16,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:19:16,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:16,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 04:19:16,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:16,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:19:16,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:19:16,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 04:19:16,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:16,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-27 04:19:16,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:16,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:16,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:16,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:19:16,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:16,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 04:19:16,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:16,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:19:16,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:19:16,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 04:19:16,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:16,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 04:19:16,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:16,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:16,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:16,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:19:16,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:16,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:19:16,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:16,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:19:16,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:19:16,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:19:16,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:16,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 04:19:16,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:16,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:16,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:16,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:19:16,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:16,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:19:16,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:16,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:19:16,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:19:16,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:19:16,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:16,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-27 04:19:16,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:16,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:16,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:16,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:19:16,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:16,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:19:16,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:16,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:19:16,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:19:16,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:19:16,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:16,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:19:16,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1513861458] [2020-10-27 04:19:16,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:19:16,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 04:19:16,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952453954] [2020-10-27 04:19:16,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 04:19:16,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:19:16,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 04:19:16,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-27 04:19:16,608 INFO L87 Difference]: Start difference. First operand 13412 states and 18006 transitions. Second operand 10 states. [2020-10-27 04:19:16,934 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 04:19:17,908 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-27 04:19:19,731 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-27 04:19:21,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:19:21,414 INFO L93 Difference]: Finished difference Result 20294 states and 27866 transitions. [2020-10-27 04:19:21,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 04:19:21,415 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 96 [2020-10-27 04:19:21,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:19:21,479 INFO L225 Difference]: With dead ends: 20294 [2020-10-27 04:19:21,479 INFO L226 Difference]: Without dead ends: 14975 [2020-10-27 04:19:21,497 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-10-27 04:19:21,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14975 states. [2020-10-27 04:19:22,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14975 to 13412. [2020-10-27 04:19:22,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13412 states. [2020-10-27 04:19:22,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13412 states to 13412 states and 17992 transitions. [2020-10-27 04:19:22,721 INFO L78 Accepts]: Start accepts. Automaton has 13412 states and 17992 transitions. Word has length 96 [2020-10-27 04:19:22,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:19:22,721 INFO L481 AbstractCegarLoop]: Abstraction has 13412 states and 17992 transitions. [2020-10-27 04:19:22,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 04:19:22,721 INFO L276 IsEmpty]: Start isEmpty. Operand 13412 states and 17992 transitions. [2020-10-27 04:19:22,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-27 04:19:22,742 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:19:22,742 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] [2020-10-27 04:19:22,742 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 04:19:22,742 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:19:22,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:19:22,742 INFO L82 PathProgramCache]: Analyzing trace with hash -534028694, now seen corresponding path program 1 times [2020-10-27 04:19:22,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:19:22,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [119395855] [2020-10-27 04:19:22,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:19:22,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:22,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:22,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:22,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:23,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:27,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:27,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 04:19:27,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:19:27,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 04:19:27,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:27,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 04:19:27,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:19:27,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-27 04:19:27,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:28,119 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:19:28,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:19:28,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:28,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:28,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:28,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:19:28,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:28,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 04:19:28,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:28,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:19:28,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:19:28,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:19:28,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:28,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:19:28,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:28,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:28,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:28,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:19:28,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:28,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 04:19:28,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:28,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:19:28,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:19:28,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 04:19:28,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:28,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-27 04:19:28,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:28,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:28,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:28,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:19:28,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:28,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:19:28,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:28,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:19:28,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:19:28,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:19:28,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:28,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 04:19:28,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:28,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:28,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:28,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:19:28,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:28,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 04:19:28,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:28,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:19:28,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:19:28,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 04:19:28,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:28,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 04:19:28,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:28,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:28,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:28,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:19:28,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:28,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:19:28,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:28,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:19:28,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:19:28,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:19:28,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:28,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-27 04:19:28,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:28,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:28,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:28,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:19:28,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:28,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:19:28,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:28,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:19:28,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:19:28,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:19:28,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:28,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:19:28,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [119395855] [2020-10-27 04:19:28,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:19:28,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-27 04:19:28,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90617808] [2020-10-27 04:19:28,476 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 04:19:28,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:19:28,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 04:19:28,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-10-27 04:19:28,476 INFO L87 Difference]: Start difference. First operand 13412 states and 17992 transitions. Second operand 14 states. [2020-10-27 04:19:28,821 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-27 04:19:29,122 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 04:19:29,721 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-27 04:19:30,265 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-27 04:19:30,969 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-27 04:19:33,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:19:33,918 INFO L93 Difference]: Finished difference Result 22919 states and 31058 transitions. [2020-10-27 04:19:33,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 04:19:33,919 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 96 [2020-10-27 04:19:33,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:19:33,984 INFO L225 Difference]: With dead ends: 22919 [2020-10-27 04:19:33,984 INFO L226 Difference]: Without dead ends: 18053 [2020-10-27 04:19:34,002 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=247, Invalid=683, Unknown=0, NotChecked=0, Total=930 [2020-10-27 04:19:34,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18053 states. [2020-10-27 04:19:35,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18053 to 14431. [2020-10-27 04:19:35,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14431 states. [2020-10-27 04:19:35,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14431 states to 14431 states and 19365 transitions. [2020-10-27 04:19:35,609 INFO L78 Accepts]: Start accepts. Automaton has 14431 states and 19365 transitions. Word has length 96 [2020-10-27 04:19:35,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:19:35,609 INFO L481 AbstractCegarLoop]: Abstraction has 14431 states and 19365 transitions. [2020-10-27 04:19:35,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 04:19:35,609 INFO L276 IsEmpty]: Start isEmpty. Operand 14431 states and 19365 transitions. [2020-10-27 04:19:35,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-27 04:19:35,621 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:19:35,621 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] [2020-10-27 04:19:35,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 04:19:35,621 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:19:35,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:19:35,622 INFO L82 PathProgramCache]: Analyzing trace with hash -668042200, now seen corresponding path program 1 times [2020-10-27 04:19:35,622 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:19:35,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1564559008] [2020-10-27 04:19:35,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:19:35,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:35,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:35,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:35,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:37,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:37,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 04:19:37,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 04:19:37,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2062 [2020-10-27 04:19:37,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:37,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:19:37,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-27 04:19:37,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 04:19:37,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:38,033 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:19:38,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:19:38,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:38,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:38,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:38,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:19:38,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:38,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:19:38,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:38,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:19:38,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:19:38,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:19:38,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:38,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:19:38,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:38,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:38,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:38,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:19:38,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:38,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 04:19:38,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:38,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:19:38,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:19:38,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 04:19:38,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:38,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-27 04:19:38,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:38,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:38,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:38,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:19:38,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:38,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:19:38,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:38,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:19:38,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:19:38,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:19:38,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:38,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 04:19:38,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:38,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:38,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:38,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 04:19:38,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:38,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:19:38,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:38,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:19:38,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:19:38,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 04:19:38,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:38,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 04:19:38,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:38,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:38,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:38,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:19:38,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:38,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:19:38,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:38,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:19:38,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 04:19:38,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 04:19:38,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:38,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-27 04:19:38,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:38,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:38,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:38,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:19:38,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:38,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:19:38,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:38,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:19:38,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:19:38,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:19:38,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:38,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:19:38,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1564559008] [2020-10-27 04:19:38,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:19:38,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:19:38,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370227025] [2020-10-27 04:19:38,302 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:19:38,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:19:38,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:19:38,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:19:38,302 INFO L87 Difference]: Start difference. First operand 14431 states and 19365 transitions. Second operand 9 states. [2020-10-27 04:19:38,658 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-27 04:19:42,551 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-27 04:19:43,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:19:43,480 INFO L93 Difference]: Finished difference Result 35494 states and 48237 transitions. [2020-10-27 04:19:43,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 04:19:43,481 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 96 [2020-10-27 04:19:43,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:19:43,554 INFO L225 Difference]: With dead ends: 35494 [2020-10-27 04:19:43,554 INFO L226 Difference]: Without dead ends: 24249 [2020-10-27 04:19:43,578 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2020-10-27 04:19:43,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24249 states. [2020-10-27 04:19:45,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24249 to 23251. [2020-10-27 04:19:45,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23251 states. [2020-10-27 04:19:45,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23251 states to 23251 states and 31184 transitions. [2020-10-27 04:19:45,755 INFO L78 Accepts]: Start accepts. Automaton has 23251 states and 31184 transitions. Word has length 96 [2020-10-27 04:19:45,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:19:45,755 INFO L481 AbstractCegarLoop]: Abstraction has 23251 states and 31184 transitions. [2020-10-27 04:19:45,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:19:45,755 INFO L276 IsEmpty]: Start isEmpty. Operand 23251 states and 31184 transitions. [2020-10-27 04:19:45,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-27 04:19:45,767 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:19:45,768 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] [2020-10-27 04:19:45,768 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 04:19:45,768 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:19:45,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:19:45,768 INFO L82 PathProgramCache]: Analyzing trace with hash 477666661, now seen corresponding path program 1 times [2020-10-27 04:19:45,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:19:45,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [973223222] [2020-10-27 04:19:45,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:19:45,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:45,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:45,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:45,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:45,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:50,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:50,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-27 04:19:50,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 04:19:50,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 04:19:50,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:50,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:19:50,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-27 04:19:50,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 04:19:50,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:51,076 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-27 04:19:51,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:19:51,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:51,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:51,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:51,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:19:51,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:51,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:19:51,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:51,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:19:51,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:19:51,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:19:51,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:51,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:19:51,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:51,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:51,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:51,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:51,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-27 04:19:51,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:19:51,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-27 04:19:51,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:51,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:19:51,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:19:51,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 04:19:51,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:51,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 04:19:51,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:51,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:51,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:51,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:19:51,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:51,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:19:51,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:51,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:19:51,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:19:51,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:19:51,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:51,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 04:19:51,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:51,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:51,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:51,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:19:51,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:51,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:19:51,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:51,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:19:51,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:19:51,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:19:51,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:51,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 04:19:51,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:51,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:51,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:51,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 04:19:51,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:51,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:19:51,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:51,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:19:51,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:19:51,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:19:51,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:51,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-27 04:19:51,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:19:51,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:19:51,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:19:51,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:19:51,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:19:51,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 04:19:51,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:19:51,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:19:51,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-27 04:19:51,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:19:51,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:19:51,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:19:51,387 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [973223222] [2020-10-27 04:19:51,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:19:51,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 04:19:51,388 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588245725] [2020-10-27 04:19:51,388 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 04:19:51,388 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:19:51,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 04:19:51,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-27 04:19:51,389 INFO L87 Difference]: Start difference. First operand 23251 states and 31184 transitions. Second operand 8 states. [2020-10-27 04:19:51,761 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-27 04:19:52,078 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-27 04:19:54,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:19:54,821 INFO L93 Difference]: Finished difference Result 23513 states and 31445 transitions. [2020-10-27 04:19:54,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 04:19:54,822 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 101 [2020-10-27 04:19:54,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:19:54,889 INFO L225 Difference]: With dead ends: 23513 [2020-10-27 04:19:54,889 INFO L226 Difference]: Without dead ends: 20264 [2020-10-27 04:19:54,902 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-10-27 04:19:54,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20264 states.