/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 05:00:43,406 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 05:00:43,409 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 05:00:43,460 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 05:00:43,461 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 05:00:43,462 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 05:00:43,464 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 05:00:43,466 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 05:00:43,469 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 05:00:43,470 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 05:00:43,472 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 05:00:43,473 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 05:00:43,474 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 05:00:43,475 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 05:00:43,476 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 05:00:43,478 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 05:00:43,479 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 05:00:43,480 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 05:00:43,482 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 05:00:43,494 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 05:00:43,496 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 05:00:43,498 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 05:00:43,499 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 05:00:43,500 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 05:00:43,509 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 05:00:43,509 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 05:00:43,510 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 05:00:43,511 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 05:00:43,511 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 05:00:43,516 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 05:00:43,517 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 05:00:43,518 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 05:00:43,521 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 05:00:43,523 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 05:00:43,524 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 05:00:43,525 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 05:00:43,526 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 05:00:43,527 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 05:00:43,527 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 05:00:43,528 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 05:00:43,530 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 05:00:43,531 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 05:00:43,589 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 05:00:43,589 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 05:00:43,594 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 05:00:43,594 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 05:00:43,595 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 05:00:43,595 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 05:00:43,596 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 05:00:43,596 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 05:00:43,596 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 05:00:43,597 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 05:00:43,598 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 05:00:43,598 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 05:00:43,598 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 05:00:43,598 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 05:00:43,599 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 05:00:43,599 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 05:00:43,599 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 05:00:43,599 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 05:00:43,600 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 05:00:43,600 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 05:00:43,601 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 05:00:43,601 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:00:43,601 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 05:00:43,601 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 05:00:43,602 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 05:00:43,602 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 05:00:43,602 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 05:00:43,602 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 05:00:43,602 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 05:00:43,603 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 05:00:44,053 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 05:00:44,084 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 05:00:44,088 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 05:00:44,089 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 05:00:44,095 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 05:00:44,096 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-27 05:00:44,188 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/08db503d8/54552932808848f4b8877ed90f8851b6/FLAG521e81920 [2020-10-27 05:00:44,978 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 05:00:44,980 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-27 05:00:45,002 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/08db503d8/54552932808848f4b8877ed90f8851b6/FLAG521e81920 [2020-10-27 05:00:45,194 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/08db503d8/54552932808848f4b8877ed90f8851b6 [2020-10-27 05:00:45,199 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 05:00:45,208 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 05:00:45,210 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 05:00:45,210 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 05:00:45,214 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 05:00:45,215 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:00:45" (1/1) ... [2020-10-27 05:00:45,220 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d52a923 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:00:45, skipping insertion in model container [2020-10-27 05:00:45,220 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:00:45" (1/1) ... [2020-10-27 05:00:45,228 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 05:00:45,307 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 05:00:45,720 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:00:45,754 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 05:00:45,920 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 05:00:45,984 INFO L208 MainTranslator]: Completed translation [2020-10-27 05:00:45,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:00:45 WrapperNode [2020-10-27 05:00:45,985 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 05:00:45,986 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 05:00:45,987 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 05:00:45,987 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 05:00:45,998 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:00:45" (1/1) ... [2020-10-27 05:00:45,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:00:45" (1/1) ... [2020-10-27 05:00:46,018 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:00:45" (1/1) ... [2020-10-27 05:00:46,018 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:00:45" (1/1) ... [2020-10-27 05:00:46,050 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:00:45" (1/1) ... [2020-10-27 05:00:46,075 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:00:45" (1/1) ... [2020-10-27 05:00:46,081 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:00:45" (1/1) ... [2020-10-27 05:00:46,090 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 05:00:46,091 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 05:00:46,091 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 05:00:46,092 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 05:00:46,093 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:00:45" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 05:00:46,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 05:00:46,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 05:00:46,216 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 05:00:46,216 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 05:00:46,216 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 05:00:46,216 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 05:00:46,216 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 05:00:46,217 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 05:00:46,217 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 05:00:46,217 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 05:00:46,217 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 05:00:46,217 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 05:00:46,217 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 05:00:46,217 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 05:00:46,218 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 05:00:46,218 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 05:00:46,218 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 05:00:46,218 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 05:00:46,218 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-27 05:00:46,218 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 05:00:46,219 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 05:00:46,219 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 05:00:46,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 05:00:46,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 05:00:46,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 05:00:46,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 05:00:46,219 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 05:00:46,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 05:00:47,846 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 05:00:47,846 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 05:00:47,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:00:47 BoogieIcfgContainer [2020-10-27 05:00:47,849 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 05:00:47,851 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 05:00:47,851 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 05:00:47,854 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 05:00:47,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:00:45" (1/3) ... [2020-10-27 05:00:47,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ee8d3b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:00:47, skipping insertion in model container [2020-10-27 05:00:47,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:00:45" (2/3) ... [2020-10-27 05:00:47,856 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ee8d3b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:00:47, skipping insertion in model container [2020-10-27 05:00:47,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:00:47" (3/3) ... [2020-10-27 05:00:47,858 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.3.ufo.BOUNDED-8.pals.c.v+cfa-reducer.c [2020-10-27 05:00:47,870 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 05:00:47,875 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 05:00:47,889 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 05:00:47,919 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 05:00:47,919 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 05:00:47,919 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 05:00:47,920 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 05:00:47,920 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 05:00:47,920 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 05:00:47,920 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 05:00:47,920 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 05:00:47,945 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states. [2020-10-27 05:00:47,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-27 05:00:47,962 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:00:47,963 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:00:47,963 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:00:47,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:00:47,970 INFO L82 PathProgramCache]: Analyzing trace with hash -1566272280, now seen corresponding path program 1 times [2020-10-27 05:00:47,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:00:47,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [88440093] [2020-10-27 05:00:47,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:00:48,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:00:48,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:48,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:49,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:50,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:50,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:53,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:00:53,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-27 05:00:53,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 05:00:53,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-27 05:00:53,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:00:53,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:00:53,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-27 05:00:53,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 05:00:53,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 05:00:54,322 WARN L193 SmtUtils]: Spent 648.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2020-10-27 05:00:54,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:00:54,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:00:54,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:54,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:00:54,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:00:54,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:00:54,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 05:00:54,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:00:54,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:00:54,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:00:54,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:00:54,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:00:54,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:00:54,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [88440093] [2020-10-27 05:00:54,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:00:54,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 05:00:54,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876950662] [2020-10-27 05:00:54,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 05:00:54,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:00:54,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 05:00:54,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 05:00:54,477 INFO L87 Difference]: Start difference. First operand 328 states. Second operand 4 states. [2020-10-27 05:00:55,215 WARN L193 SmtUtils]: Spent 604.00 ms on a formula simplification that was a NOOP. DAG size: 282 [2020-10-27 05:00:57,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:00:57,552 INFO L93 Difference]: Finished difference Result 581 states and 1006 transitions. [2020-10-27 05:00:57,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 05:00:57,553 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 116 [2020-10-27 05:00:57,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:00:57,572 INFO L225 Difference]: With dead ends: 581 [2020-10-27 05:00:57,572 INFO L226 Difference]: Without dead ends: 438 [2020-10-27 05:00:57,577 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:00:57,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2020-10-27 05:00:57,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 435. [2020-10-27 05:00:57,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2020-10-27 05:00:57,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 719 transitions. [2020-10-27 05:00:57,663 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 719 transitions. Word has length 116 [2020-10-27 05:00:57,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:00:57,664 INFO L481 AbstractCegarLoop]: Abstraction has 435 states and 719 transitions. [2020-10-27 05:00:57,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 05:00:57,664 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 719 transitions. [2020-10-27 05:00:57,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-27 05:00:57,670 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:00:57,671 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:00:57,671 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 05:00:57,671 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:00:57,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:00:57,672 INFO L82 PathProgramCache]: Analyzing trace with hash 353479814, now seen corresponding path program 1 times [2020-10-27 05:00:57,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:00:57,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2021297488] [2020-10-27 05:00:57,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:00:57,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:00:57,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:57,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:58,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:58,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:00:58,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:02,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:01:02,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-27 05:01:02,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 05:01:02,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-27 05:01:02,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:01:02,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:01:02,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:01:02,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-27 05:01:02,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 05:01:03,494 WARN L193 SmtUtils]: Spent 520.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2020-10-27 05:01:03,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:01:03,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:01:03,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:03,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:01:03,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:01:03,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:01:03,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 05:01:03,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:01:03,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:01:03,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:01:03,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:01:03,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:01:03,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:01:03,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2021297488] [2020-10-27 05:01:03,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:01:03,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:01:03,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514977345] [2020-10-27 05:01:03,664 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:01:03,665 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:01:03,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:01:03,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:01:03,676 INFO L87 Difference]: Start difference. First operand 435 states and 719 transitions. Second operand 5 states. [2020-10-27 05:01:06,538 WARN L193 SmtUtils]: Spent 516.00 ms on a formula simplification that was a NOOP. DAG size: 286 [2020-10-27 05:01:06,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:01:06,642 INFO L93 Difference]: Finished difference Result 1231 states and 2032 transitions. [2020-10-27 05:01:06,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:01:06,643 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-27 05:01:06,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:01:06,651 INFO L225 Difference]: With dead ends: 1231 [2020-10-27 05:01:06,651 INFO L226 Difference]: Without dead ends: 847 [2020-10-27 05:01:06,655 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:01:06,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2020-10-27 05:01:06,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 844. [2020-10-27 05:01:06,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 844 states. [2020-10-27 05:01:06,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 1392 transitions. [2020-10-27 05:01:06,750 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 1392 transitions. Word has length 119 [2020-10-27 05:01:06,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:01:06,750 INFO L481 AbstractCegarLoop]: Abstraction has 844 states and 1392 transitions. [2020-10-27 05:01:06,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:01:06,751 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 1392 transitions. [2020-10-27 05:01:06,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-27 05:01:06,756 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:01:06,756 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:01:06,756 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 05:01:06,757 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:01:06,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:01:06,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1834212716, now seen corresponding path program 1 times [2020-10-27 05:01:06,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:01:06,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2128791882] [2020-10-27 05:01:06,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:01:06,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:01:06,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:06,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:07,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:07,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:07,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:07,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:11,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:01:11,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-27 05:01:11,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 05:01:11,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 05:01:11,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:01:11,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:01:11,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:01:11,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-27 05:01:11,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 05:01:12,617 WARN L193 SmtUtils]: Spent 602.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2020-10-27 05:01:12,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:01:12,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:01:12,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:12,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:01:12,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:01:12,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:01:12,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 05:01:12,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:01:12,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:01:12,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:01:12,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:01:12,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:01:12,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:01:12,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2128791882] [2020-10-27 05:01:12,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:01:12,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:01:12,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780809137] [2020-10-27 05:01:12,751 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:01:12,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:01:12,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:01:12,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:01:12,752 INFO L87 Difference]: Start difference. First operand 844 states and 1392 transitions. Second operand 5 states. [2020-10-27 05:01:15,917 WARN L193 SmtUtils]: Spent 616.00 ms on a formula simplification that was a NOOP. DAG size: 286 [2020-10-27 05:01:16,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:01:16,069 INFO L93 Difference]: Finished difference Result 2348 states and 3854 transitions. [2020-10-27 05:01:16,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:01:16,070 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-10-27 05:01:16,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:01:16,087 INFO L225 Difference]: With dead ends: 2348 [2020-10-27 05:01:16,087 INFO L226 Difference]: Without dead ends: 1621 [2020-10-27 05:01:16,090 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:01:16,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1621 states. [2020-10-27 05:01:16,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1621 to 1618. [2020-10-27 05:01:16,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1618 states. [2020-10-27 05:01:16,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1618 states to 1618 states and 2657 transitions. [2020-10-27 05:01:16,265 INFO L78 Accepts]: Start accepts. Automaton has 1618 states and 2657 transitions. Word has length 119 [2020-10-27 05:01:16,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:01:16,266 INFO L481 AbstractCegarLoop]: Abstraction has 1618 states and 2657 transitions. [2020-10-27 05:01:16,266 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:01:16,266 INFO L276 IsEmpty]: Start isEmpty. Operand 1618 states and 2657 transitions. [2020-10-27 05:01:16,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-27 05:01:16,275 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:01:16,275 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:01:16,275 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 05:01:16,276 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:01:16,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:01:16,276 INFO L82 PathProgramCache]: Analyzing trace with hash -1910227130, now seen corresponding path program 1 times [2020-10-27 05:01:16,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:01:16,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [140666676] [2020-10-27 05:01:16,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:01:16,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:01:16,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:16,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:16,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:16,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:17,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:17,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:21,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:01:21,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-27 05:01:21,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 05:01:21,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-27 05:01:21,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:01:21,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 05:01:21,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:01:21,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-27 05:01:21,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:01:22,190 WARN L193 SmtUtils]: Spent 666.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2020-10-27 05:01:22,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:01:22,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:01:22,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:22,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:01:22,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:01:22,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:01:22,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 05:01:22,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:01:22,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:01:22,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:01:22,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:01:22,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:01:22,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:01:22,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [140666676] [2020-10-27 05:01:22,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:01:22,381 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 05:01:22,382 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911426036] [2020-10-27 05:01:22,383 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 05:01:22,383 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:01:22,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 05:01:22,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-27 05:01:22,384 INFO L87 Difference]: Start difference. First operand 1618 states and 2657 transitions. Second operand 8 states. [2020-10-27 05:01:23,010 WARN L193 SmtUtils]: Spent 545.00 ms on a formula simplification that was a NOOP. DAG size: 286 [2020-10-27 05:01:25,960 WARN L193 SmtUtils]: Spent 662.00 ms on a formula simplification that was a NOOP. DAG size: 288 [2020-10-27 05:01:26,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:01:26,454 INFO L93 Difference]: Finished difference Result 3672 states and 6098 transitions. [2020-10-27 05:01:26,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 05:01:26,455 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 120 [2020-10-27 05:01:26,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:01:26,473 INFO L225 Difference]: With dead ends: 3672 [2020-10-27 05:01:26,473 INFO L226 Difference]: Without dead ends: 2751 [2020-10-27 05:01:26,477 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-10-27 05:01:26,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2751 states. [2020-10-27 05:01:26,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2751 to 1640. [2020-10-27 05:01:26,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1640 states. [2020-10-27 05:01:26,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1640 states to 1640 states and 2673 transitions. [2020-10-27 05:01:26,651 INFO L78 Accepts]: Start accepts. Automaton has 1640 states and 2673 transitions. Word has length 120 [2020-10-27 05:01:26,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:01:26,652 INFO L481 AbstractCegarLoop]: Abstraction has 1640 states and 2673 transitions. [2020-10-27 05:01:26,652 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 05:01:26,652 INFO L276 IsEmpty]: Start isEmpty. Operand 1640 states and 2673 transitions. [2020-10-27 05:01:26,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-27 05:01:26,658 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:01:26,658 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:01:26,659 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 05:01:26,659 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:01:26,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:01:26,659 INFO L82 PathProgramCache]: Analyzing trace with hash 402128205, now seen corresponding path program 1 times [2020-10-27 05:01:26,660 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:01:26,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [990090122] [2020-10-27 05:01:26,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:01:26,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:01:26,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:26,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:27,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:27,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:27,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:30,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:30,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:31,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:01:31,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-27 05:01:31,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 05:01:31,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-27 05:01:31,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:01:31,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:01:31,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:01:31,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-27 05:01:31,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:01:32,453 WARN L193 SmtUtils]: Spent 566.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2020-10-27 05:01:32,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:01:32,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:01:32,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:32,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:01:32,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:01:32,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:01:32,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 05:01:32,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:01:32,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:01:32,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:01:32,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:01:32,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:01:32,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:01:32,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [990090122] [2020-10-27 05:01:32,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:01:32,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:01:32,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079433309] [2020-10-27 05:01:32,539 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:01:32,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:01:32,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:01:32,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:01:32,540 INFO L87 Difference]: Start difference. First operand 1640 states and 2673 transitions. Second operand 5 states. [2020-10-27 05:01:35,762 WARN L193 SmtUtils]: Spent 635.00 ms on a formula simplification that was a NOOP. DAG size: 286 [2020-10-27 05:01:35,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:01:35,998 INFO L93 Difference]: Finished difference Result 4650 states and 7543 transitions. [2020-10-27 05:01:35,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:01:35,999 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 120 [2020-10-27 05:01:36,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:01:36,019 INFO L225 Difference]: With dead ends: 4650 [2020-10-27 05:01:36,019 INFO L226 Difference]: Without dead ends: 3135 [2020-10-27 05:01:36,024 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:01:36,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3135 states. [2020-10-27 05:01:36,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3135 to 3132. [2020-10-27 05:01:36,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3132 states. [2020-10-27 05:01:36,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3132 states to 3132 states and 5058 transitions. [2020-10-27 05:01:36,349 INFO L78 Accepts]: Start accepts. Automaton has 3132 states and 5058 transitions. Word has length 120 [2020-10-27 05:01:36,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:01:36,350 INFO L481 AbstractCegarLoop]: Abstraction has 3132 states and 5058 transitions. [2020-10-27 05:01:36,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:01:36,352 INFO L276 IsEmpty]: Start isEmpty. Operand 3132 states and 5058 transitions. [2020-10-27 05:01:36,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-27 05:01:36,363 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:01:36,363 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:01:36,364 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 05:01:36,364 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:01:36,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:01:36,365 INFO L82 PathProgramCache]: Analyzing trace with hash -1767460569, now seen corresponding path program 1 times [2020-10-27 05:01:36,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:01:36,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1832049295] [2020-10-27 05:01:36,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:01:36,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:01:36,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:36,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:36,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:36,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:38,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:38,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:41,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:01:41,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-27 05:01:41,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 05:01:41,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 05:01:41,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:01:41,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:01:41,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:01:41,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-27 05:01:41,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:01:42,261 WARN L193 SmtUtils]: Spent 682.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2020-10-27 05:01:42,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:01:42,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:01:42,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:42,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:01:42,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:01:42,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:01:42,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 05:01:42,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:01:42,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:01:42,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:01:42,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:01:42,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:01:42,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:01:42,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1832049295] [2020-10-27 05:01:42,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:01:42,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:01:42,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201257007] [2020-10-27 05:01:42,362 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:01:42,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:01:42,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:01:42,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:01:42,363 INFO L87 Difference]: Start difference. First operand 3132 states and 5058 transitions. Second operand 5 states. [2020-10-27 05:01:45,775 WARN L193 SmtUtils]: Spent 645.00 ms on a formula simplification that was a NOOP. DAG size: 286 [2020-10-27 05:01:45,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:01:45,997 INFO L93 Difference]: Finished difference Result 9106 states and 14672 transitions. [2020-10-27 05:01:45,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:01:45,998 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-27 05:01:45,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:01:46,032 INFO L225 Difference]: With dead ends: 9106 [2020-10-27 05:01:46,032 INFO L226 Difference]: Without dead ends: 6115 [2020-10-27 05:01:46,041 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:01:46,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6115 states. [2020-10-27 05:01:46,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6115 to 6112. [2020-10-27 05:01:46,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6112 states. [2020-10-27 05:01:46,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6112 states to 6112 states and 9806 transitions. [2020-10-27 05:01:46,776 INFO L78 Accepts]: Start accepts. Automaton has 6112 states and 9806 transitions. Word has length 121 [2020-10-27 05:01:46,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:01:46,777 INFO L481 AbstractCegarLoop]: Abstraction has 6112 states and 9806 transitions. [2020-10-27 05:01:46,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:01:46,777 INFO L276 IsEmpty]: Start isEmpty. Operand 6112 states and 9806 transitions. [2020-10-27 05:01:46,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-27 05:01:46,790 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:01:46,790 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:01:46,791 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 05:01:46,791 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:01:46,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:01:46,792 INFO L82 PathProgramCache]: Analyzing trace with hash 803358010, now seen corresponding path program 1 times [2020-10-27 05:01:46,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:01:46,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1866330418] [2020-10-27 05:01:46,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:01:46,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:01:46,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:46,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:47,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:47,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:47,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:49,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:49,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:51,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:01:51,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-27 05:01:51,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 05:01:51,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 05:01:51,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:01:51,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:01:51,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:01:51,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-27 05:01:51,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:01:52,636 WARN L193 SmtUtils]: Spent 622.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2020-10-27 05:01:52,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:01:52,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:01:52,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:52,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:01:52,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:01:52,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:01:52,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 05:01:52,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:01:52,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:01:52,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:01:52,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:01:52,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:01:52,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:01:52,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1866330418] [2020-10-27 05:01:52,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:01:52,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:01:52,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46860742] [2020-10-27 05:01:52,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:01:52,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:01:52,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:01:52,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:01:52,736 INFO L87 Difference]: Start difference. First operand 6112 states and 9806 transitions. Second operand 5 states. [2020-10-27 05:01:56,554 WARN L193 SmtUtils]: Spent 663.00 ms on a formula simplification that was a NOOP. DAG size: 286 [2020-10-27 05:01:56,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:01:56,918 INFO L93 Difference]: Finished difference Result 17677 states and 28317 transitions. [2020-10-27 05:01:56,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:01:56,919 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 121 [2020-10-27 05:01:56,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:01:56,978 INFO L225 Difference]: With dead ends: 17677 [2020-10-27 05:01:56,979 INFO L226 Difference]: Without dead ends: 12026 [2020-10-27 05:01:56,993 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:01:57,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12026 states. [2020-10-27 05:01:58,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12026 to 12023. [2020-10-27 05:01:58,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12023 states. [2020-10-27 05:01:58,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12023 states to 12023 states and 19207 transitions. [2020-10-27 05:01:58,302 INFO L78 Accepts]: Start accepts. Automaton has 12023 states and 19207 transitions. Word has length 121 [2020-10-27 05:01:58,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:01:58,303 INFO L481 AbstractCegarLoop]: Abstraction has 12023 states and 19207 transitions. [2020-10-27 05:01:58,303 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:01:58,303 INFO L276 IsEmpty]: Start isEmpty. Operand 12023 states and 19207 transitions. [2020-10-27 05:01:58,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-27 05:01:58,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:01:58,328 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:01:58,328 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 05:01:58,328 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:01:58,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:01:58,329 INFO L82 PathProgramCache]: Analyzing trace with hash 1983957903, now seen corresponding path program 1 times [2020-10-27 05:01:58,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:01:58,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [660788825] [2020-10-27 05:01:58,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:01:58,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:01:58,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:58,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:58,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:59,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:59,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:01:59,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:03,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:02:03,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 05:02:03,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 05:02:03,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-27 05:02:03,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:02:03,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 05:02:03,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:02:03,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-27 05:02:03,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:02:04,090 WARN L193 SmtUtils]: Spent 557.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2020-10-27 05:02:04,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:02:04,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:02:04,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:04,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:02:04,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:02:04,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:02:04,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 05:02:04,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:02:04,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:02:04,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:02:04,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:02:04,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:02:04,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:02:04,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [660788825] [2020-10-27 05:02:04,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:02:04,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 05:02:04,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452258432] [2020-10-27 05:02:04,182 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 05:02:04,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:02:04,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 05:02:04,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-27 05:02:04,183 INFO L87 Difference]: Start difference. First operand 12023 states and 19207 transitions. Second operand 8 states. [2020-10-27 05:02:04,948 WARN L193 SmtUtils]: Spent 681.00 ms on a formula simplification that was a NOOP. DAG size: 286 [2020-10-27 05:02:09,078 WARN L193 SmtUtils]: Spent 636.00 ms on a formula simplification that was a NOOP. DAG size: 288 [2020-10-27 05:02:10,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:02:10,519 INFO L93 Difference]: Finished difference Result 21505 states and 34831 transitions. [2020-10-27 05:02:10,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 05:02:10,519 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 122 [2020-10-27 05:02:10,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:02:10,568 INFO L225 Difference]: With dead ends: 21505 [2020-10-27 05:02:10,568 INFO L226 Difference]: Without dead ends: 19638 [2020-10-27 05:02:10,579 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-10-27 05:02:10,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19638 states. [2020-10-27 05:02:11,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19638 to 12023. [2020-10-27 05:02:11,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12023 states. [2020-10-27 05:02:11,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12023 states to 12023 states and 19191 transitions. [2020-10-27 05:02:11,945 INFO L78 Accepts]: Start accepts. Automaton has 12023 states and 19191 transitions. Word has length 122 [2020-10-27 05:02:11,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:02:11,945 INFO L481 AbstractCegarLoop]: Abstraction has 12023 states and 19191 transitions. [2020-10-27 05:02:11,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 05:02:11,946 INFO L276 IsEmpty]: Start isEmpty. Operand 12023 states and 19191 transitions. [2020-10-27 05:02:11,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-27 05:02:11,973 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:02:11,973 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:02:11,973 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 05:02:11,974 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:02:11,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:02:11,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1437499645, now seen corresponding path program 1 times [2020-10-27 05:02:11,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:02:11,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [578079635] [2020-10-27 05:02:11,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:02:12,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:02:12,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:12,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:12,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:12,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:12,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:15,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:02:15,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 05:02:15,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 05:02:15,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3873 [2020-10-27 05:02:15,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:02:15,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:02:15,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-27 05:02:15,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 05:02:15,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:02:16,522 WARN L193 SmtUtils]: Spent 581.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2020-10-27 05:02:16,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:02:16,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:02:16,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:16,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:02:16,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:02:16,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:02:16,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 05:02:16,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:02:16,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:02:16,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:02:16,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:02:16,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:02:16,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:02:16,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [578079635] [2020-10-27 05:02:16,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:02:16,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 05:02:16,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24223514] [2020-10-27 05:02:16,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 05:02:16,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:02:16,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 05:02:16,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 05:02:16,587 INFO L87 Difference]: Start difference. First operand 12023 states and 19191 transitions. Second operand 4 states. [2020-10-27 05:02:17,211 WARN L193 SmtUtils]: Spent 569.00 ms on a formula simplification that was a NOOP. DAG size: 282 [2020-10-27 05:02:20,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:02:20,663 INFO L93 Difference]: Finished difference Result 25277 states and 40891 transitions. [2020-10-27 05:02:20,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 05:02:20,663 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 122 [2020-10-27 05:02:20,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:02:20,713 INFO L225 Difference]: With dead ends: 25277 [2020-10-27 05:02:20,714 INFO L226 Difference]: Without dead ends: 18378 [2020-10-27 05:02:20,733 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:02:20,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18378 states. [2020-10-27 05:02:22,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18378 to 18375. [2020-10-27 05:02:22,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18375 states. [2020-10-27 05:02:22,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18375 states to 18375 states and 29479 transitions. [2020-10-27 05:02:22,785 INFO L78 Accepts]: Start accepts. Automaton has 18375 states and 29479 transitions. Word has length 122 [2020-10-27 05:02:22,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:02:22,786 INFO L481 AbstractCegarLoop]: Abstraction has 18375 states and 29479 transitions. [2020-10-27 05:02:22,786 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 05:02:22,786 INFO L276 IsEmpty]: Start isEmpty. Operand 18375 states and 29479 transitions. [2020-10-27 05:02:22,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-27 05:02:22,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:02:22,807 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:02:22,807 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 05:02:22,808 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:02:22,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:02:22,808 INFO L82 PathProgramCache]: Analyzing trace with hash -790540284, now seen corresponding path program 1 times [2020-10-27 05:02:22,808 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:02:22,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1863511900] [2020-10-27 05:02:22,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:02:22,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:02:22,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:22,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:23,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:23,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:23,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:23,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:23,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:27,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:02:27,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-27 05:02:27,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 05:02:27,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-27 05:02:27,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:02:27,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:02:27,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:02:27,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-27 05:02:27,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:02:28,539 WARN L193 SmtUtils]: Spent 566.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2020-10-27 05:02:28,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:02:28,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:02:28,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:28,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:02:28,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:02:28,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:02:28,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 05:02:28,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:02:28,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:02:28,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:02:28,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:02:28,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:02:28,607 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 05:02:28,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1863511900] [2020-10-27 05:02:28,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:02:28,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:02:28,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869645733] [2020-10-27 05:02:28,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:02:28,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:02:28,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:02:28,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:02:28,609 INFO L87 Difference]: Start difference. First operand 18375 states and 29479 transitions. Second operand 5 states. [2020-10-27 05:02:33,690 WARN L193 SmtUtils]: Spent 763.00 ms on a formula simplification that was a NOOP. DAG size: 286 [2020-10-27 05:02:35,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:02:35,771 INFO L93 Difference]: Finished difference Result 52958 states and 84771 transitions. [2020-10-27 05:02:35,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:02:35,771 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-10-27 05:02:35,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:02:35,850 INFO L225 Difference]: With dead ends: 52958 [2020-10-27 05:02:35,850 INFO L226 Difference]: Without dead ends: 35915 [2020-10-27 05:02:35,882 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:02:35,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35915 states. [2020-10-27 05:02:40,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35915 to 35912. [2020-10-27 05:02:40,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35912 states. [2020-10-27 05:02:40,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35912 states to 35912 states and 57239 transitions. [2020-10-27 05:02:40,163 INFO L78 Accepts]: Start accepts. Automaton has 35912 states and 57239 transitions. Word has length 126 [2020-10-27 05:02:40,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:02:40,164 INFO L481 AbstractCegarLoop]: Abstraction has 35912 states and 57239 transitions. [2020-10-27 05:02:40,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:02:40,164 INFO L276 IsEmpty]: Start isEmpty. Operand 35912 states and 57239 transitions. [2020-10-27 05:02:40,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-27 05:02:40,193 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:02:40,193 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:02:40,194 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 05:02:40,194 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:02:40,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:02:40,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1030479667, now seen corresponding path program 1 times [2020-10-27 05:02:40,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:02:40,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1534029243] [2020-10-27 05:02:40,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:02:40,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:02:40,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:40,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:40,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:40,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:40,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:45,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:02:45,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-27 05:02:45,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 05:02:45,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-27 05:02:45,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:02:45,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 05:02:45,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:02:45,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-27 05:02:45,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:02:46,022 WARN L193 SmtUtils]: Spent 617.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2020-10-27 05:02:46,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:02:46,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:02:46,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:02:46,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:02:46,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:02:46,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:02:46,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 05:02:46,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:02:46,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:02:46,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:02:46,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:02:46,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:02:46,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:02:46,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1534029243] [2020-10-27 05:02:46,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:02:46,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 05:02:46,121 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937844521] [2020-10-27 05:02:46,121 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 05:02:46,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:02:46,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 05:02:46,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-27 05:02:46,122 INFO L87 Difference]: Start difference. First operand 35912 states and 57239 transitions. Second operand 8 states. [2020-10-27 05:02:46,835 WARN L193 SmtUtils]: Spent 632.00 ms on a formula simplification that was a NOOP. DAG size: 286 [2020-10-27 05:02:51,460 WARN L193 SmtUtils]: Spent 631.00 ms on a formula simplification that was a NOOP. DAG size: 288 [2020-10-27 05:02:57,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:02:57,166 INFO L93 Difference]: Finished difference Result 88030 states and 141995 transitions. [2020-10-27 05:02:57,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 05:02:57,167 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 126 [2020-10-27 05:02:57,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:02:57,311 INFO L225 Difference]: With dead ends: 88030 [2020-10-27 05:02:57,312 INFO L226 Difference]: Without dead ends: 62171 [2020-10-27 05:02:57,367 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-10-27 05:02:57,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62171 states. [2020-10-27 05:03:02,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62171 to 37352. [2020-10-27 05:03:02,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37352 states. [2020-10-27 05:03:02,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37352 states to 37352 states and 58807 transitions. [2020-10-27 05:03:02,643 INFO L78 Accepts]: Start accepts. Automaton has 37352 states and 58807 transitions. Word has length 126 [2020-10-27 05:03:02,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:03:02,643 INFO L481 AbstractCegarLoop]: Abstraction has 37352 states and 58807 transitions. [2020-10-27 05:03:02,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 05:03:02,644 INFO L276 IsEmpty]: Start isEmpty. Operand 37352 states and 58807 transitions. [2020-10-27 05:03:02,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-27 05:03:02,671 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:03:02,671 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:03:02,671 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 05:03:02,671 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:03:02,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:03:02,672 INFO L82 PathProgramCache]: Analyzing trace with hash 889161360, now seen corresponding path program 1 times [2020-10-27 05:03:02,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:03:02,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [279315190] [2020-10-27 05:03:02,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:03:02,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:03:02,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:02,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:03,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:03,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:04,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:04,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:04,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:07,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:03:07,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-27 05:03:07,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 05:03:07,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-27 05:03:07,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:03:07,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:03:07,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:03:07,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-27 05:03:07,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:03:08,437 WARN L193 SmtUtils]: Spent 595.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2020-10-27 05:03:08,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:03:08,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:03:08,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:08,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:03:08,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:03:08,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:03:08,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 05:03:08,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:03:08,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:03:08,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:03:08,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:03:08,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:03:08,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:03:08,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [279315190] [2020-10-27 05:03:08,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:03:08,501 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:03:08,501 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345928707] [2020-10-27 05:03:08,502 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:03:08,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:03:08,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:03:08,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:03:08,503 INFO L87 Difference]: Start difference. First operand 37352 states and 58807 transitions. Second operand 5 states. [2020-10-27 05:03:14,871 WARN L193 SmtUtils]: Spent 644.00 ms on a formula simplification that was a NOOP. DAG size: 286 [2020-10-27 05:03:19,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:03:19,865 INFO L93 Difference]: Finished difference Result 109439 states and 172025 transitions. [2020-10-27 05:03:19,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 05:03:19,866 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 126 [2020-10-27 05:03:19,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:03:19,983 INFO L225 Difference]: With dead ends: 109439 [2020-10-27 05:03:19,984 INFO L226 Difference]: Without dead ends: 72856 [2020-10-27 05:03:20,034 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 05:03:20,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72856 states. [2020-10-27 05:03:29,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72856 to 72853. [2020-10-27 05:03:29,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72853 states. [2020-10-27 05:03:29,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72853 states to 72853 states and 113851 transitions. [2020-10-27 05:03:29,276 INFO L78 Accepts]: Start accepts. Automaton has 72853 states and 113851 transitions. Word has length 126 [2020-10-27 05:03:29,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:03:29,276 INFO L481 AbstractCegarLoop]: Abstraction has 72853 states and 113851 transitions. [2020-10-27 05:03:29,276 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 05:03:29,276 INFO L276 IsEmpty]: Start isEmpty. Operand 72853 states and 113851 transitions. [2020-10-27 05:03:29,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-27 05:03:29,499 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:03:29,499 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:03:29,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 05:03:29,499 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:03:29,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:03:29,500 INFO L82 PathProgramCache]: Analyzing trace with hash 1184465014, now seen corresponding path program 1 times [2020-10-27 05:03:29,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:03:29,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1509672358] [2020-10-27 05:03:29,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:03:29,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:03:29,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:29,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:29,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:30,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:30,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:34,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:03:34,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-27 05:03:34,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 05:03:34,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 05:03:34,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:03:34,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 05:03:34,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 05:03:34,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-27 05:03:34,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:03:35,261 WARN L193 SmtUtils]: Spent 591.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2020-10-27 05:03:35,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:03:35,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:03:35,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:03:35,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:03:35,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:03:35,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:03:35,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 05:03:35,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:03:35,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 05:03:35,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:03:35,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 05:03:35,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:03:35,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:03:35,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1509672358] [2020-10-27 05:03:35,396 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:03:35,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 05:03:35,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688602072] [2020-10-27 05:03:35,397 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 05:03:35,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:03:35,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 05:03:35,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-27 05:03:35,397 INFO L87 Difference]: Start difference. First operand 72853 states and 113851 transitions. Second operand 8 states. [2020-10-27 05:03:36,088 WARN L193 SmtUtils]: Spent 613.00 ms on a formula simplification that was a NOOP. DAG size: 286 [2020-10-27 05:03:42,619 WARN L193 SmtUtils]: Spent 657.00 ms on a formula simplification that was a NOOP. DAG size: 288 [2020-10-27 05:03:54,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 05:03:54,889 INFO L93 Difference]: Finished difference Result 134747 states and 213567 transitions. [2020-10-27 05:03:54,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 05:03:54,889 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 127 [2020-10-27 05:03:54,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 05:03:55,299 INFO L225 Difference]: With dead ends: 134747 [2020-10-27 05:03:55,299 INFO L226 Difference]: Without dead ends: 121272 [2020-10-27 05:03:55,346 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-10-27 05:03:55,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121272 states. [2020-10-27 05:04:05,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121272 to 73237. [2020-10-27 05:04:05,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73237 states. [2020-10-27 05:04:05,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73237 states to 73237 states and 114363 transitions. [2020-10-27 05:04:05,219 INFO L78 Accepts]: Start accepts. Automaton has 73237 states and 114363 transitions. Word has length 127 [2020-10-27 05:04:05,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 05:04:05,220 INFO L481 AbstractCegarLoop]: Abstraction has 73237 states and 114363 transitions. [2020-10-27 05:04:05,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 05:04:05,220 INFO L276 IsEmpty]: Start isEmpty. Operand 73237 states and 114363 transitions. [2020-10-27 05:04:05,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-27 05:04:05,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 05:04:05,290 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 05:04:05,291 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 05:04:05,291 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 05:04:05,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 05:04:05,291 INFO L82 PathProgramCache]: Analyzing trace with hash 422605028, now seen corresponding path program 1 times [2020-10-27 05:04:05,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 05:04:05,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1370324967] [2020-10-27 05:04:05,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 05:04:05,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:04:05,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:05,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:05,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:06,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:06,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:06,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:10,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:04:10,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-27 05:04:10,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 05:04:10,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-27 05:04:10,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:04:10,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 05:04:10,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 05:04:10,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-27 05:04:10,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:04:11,063 WARN L193 SmtUtils]: Spent 618.00 ms on a formula simplification that was a NOOP. DAG size: 280 [2020-10-27 05:04:11,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 05:04:11,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 05:04:11,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 05:04:11,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 05:04:11,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 05:04:11,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 05:04:11,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 05:04:11,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 05:04:11,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 05:04:11,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 05:04:11,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 05:04:11,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 05:04:11,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 05:04:11,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1370324967] [2020-10-27 05:04:11,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 05:04:11,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 05:04:11,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323906546] [2020-10-27 05:04:11,133 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 05:04:11,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 05:04:11,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 05:04:11,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 05:04:11,134 INFO L87 Difference]: Start difference. First operand 73237 states and 114363 transitions. Second operand 5 states.