/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=DEEPEST --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.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 23:22:58,303 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 23:22:58,306 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 23:22:58,341 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 23:22:58,342 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 23:22:58,343 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 23:22:58,345 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 23:22:58,347 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 23:22:58,350 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 23:22:58,351 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 23:22:58,353 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 23:22:58,354 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 23:22:58,355 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 23:22:58,356 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 23:22:58,358 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 23:22:58,359 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 23:22:58,360 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 23:22:58,361 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 23:22:58,364 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 23:22:58,366 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 23:22:58,369 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 23:22:58,370 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 23:22:58,372 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 23:22:58,373 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 23:22:58,377 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 23:22:58,398 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 23:22:58,399 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 23:22:58,406 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 23:22:58,406 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 23:22:58,408 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 23:22:58,410 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 23:22:58,411 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 23:22:58,422 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 23:22:58,424 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 23:22:58,425 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 23:22:58,425 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 23:22:58,430 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 23:22:58,431 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 23:22:58,431 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 23:22:58,433 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 23:22:58,433 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 23:22:58,434 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 23:22:58,463 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 23:22:58,463 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 23:22:58,465 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 23:22:58,465 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 23:22:58,465 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 23:22:58,466 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 23:22:58,466 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 23:22:58,466 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 23:22:58,466 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 23:22:58,467 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 23:22:58,467 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 23:22:58,467 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 23:22:58,467 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 23:22:58,467 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 23:22:58,468 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 23:22:58,468 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 23:22:58,468 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 23:22:58,468 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 23:22:58,469 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 23:22:58,469 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 23:22:58,469 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 23:22:58,469 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 23:22:58,470 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 23:22:58,470 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 23:22:58,470 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 23:22:58,470 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 23:22:58,470 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 23:22:58,471 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 23:22:58,471 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 23:22:58,471 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 23:22:58,839 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 23:22:58,870 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 23:22:58,875 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 23:22:58,878 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 23:22:58,879 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 23:22:58,880 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-27 23:22:58,974 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5db6f0644/09b30e943022471ba4e9e971891fe5c3/FLAG8d3226cea [2020-10-27 23:22:59,724 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 23:22:59,725 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-27 23:22:59,754 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5db6f0644/09b30e943022471ba4e9e971891fe5c3/FLAG8d3226cea [2020-10-27 23:22:59,966 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5db6f0644/09b30e943022471ba4e9e971891fe5c3 [2020-10-27 23:22:59,974 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 23:22:59,981 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 23:22:59,986 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 23:22:59,987 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 23:22:59,992 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 23:22:59,993 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:22:59" (1/1) ... [2020-10-27 23:22:59,997 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1756a143 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:22:59, skipping insertion in model container [2020-10-27 23:22:59,997 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 11:22:59" (1/1) ... [2020-10-27 23:23:00,006 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 23:23:00,107 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 23:23:00,915 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:23:00,964 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 23:23:01,367 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 23:23:01,396 INFO L208 MainTranslator]: Completed translation [2020-10-27 23:23:01,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:23:01 WrapperNode [2020-10-27 23:23:01,397 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 23:23:01,398 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 23:23:01,399 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 23:23:01,399 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 23:23:01,416 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:23:01" (1/1) ... [2020-10-27 23:23:01,416 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:23:01" (1/1) ... [2020-10-27 23:23:01,456 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:23:01" (1/1) ... [2020-10-27 23:23:01,456 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:23:01" (1/1) ... [2020-10-27 23:23:01,490 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:23:01" (1/1) ... [2020-10-27 23:23:01,514 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:23:01" (1/1) ... [2020-10-27 23:23:01,521 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:23:01" (1/1) ... [2020-10-27 23:23:01,530 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 23:23:01,531 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 23:23:01,531 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 23:23:01,531 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 23:23:01,532 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:23:01" (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 23:23:01,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 23:23:01,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 23:23:01,623 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 23:23:01,624 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 23:23:01,624 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 23:23:01,625 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 23:23:01,625 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 23:23:01,625 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 23:23:01,626 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 23:23:01,626 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 23:23:01,627 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 23:23:01,627 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 23:23:01,627 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 23:23:01,627 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 23:23:01,628 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 23:23:01,629 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 23:23:01,629 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 23:23:01,629 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 23:23:01,630 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 23:23:01,630 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 23:23:01,630 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 23:23:01,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 23:23:01,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 23:23:01,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 23:23:01,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 23:23:01,631 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 23:23:01,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 23:23:03,644 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 23:23:03,645 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 23:23:03,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:23:03 BoogieIcfgContainer [2020-10-27 23:23:03,648 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 23:23:03,650 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 23:23:03,650 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 23:23:03,653 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 23:23:03,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 11:22:59" (1/3) ... [2020-10-27 23:23:03,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b4827e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:23:03, skipping insertion in model container [2020-10-27 23:23:03,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 11:23:01" (2/3) ... [2020-10-27 23:23:03,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b4827e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 11:23:03, skipping insertion in model container [2020-10-27 23:23:03,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 11:23:03" (3/3) ... [2020-10-27 23:23:03,657 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-27 23:23:03,670 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 23:23:03,676 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 23:23:03,691 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 23:23:03,723 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 23:23:03,724 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 23:23:03,724 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 23:23:03,724 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 23:23:03,724 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 23:23:03,725 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 23:23:03,725 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 23:23:03,725 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 23:23:03,752 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states. [2020-10-27 23:23:03,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-27 23:23:03,771 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:23:03,772 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:23:03,772 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:23:03,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:23:03,779 INFO L82 PathProgramCache]: Analyzing trace with hash -199063433, now seen corresponding path program 1 times [2020-10-27 23:23:03,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:23:03,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [286570237] [2020-10-27 23:23:03,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:23:04,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:04,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:04,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:05,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:05,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:05,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:05,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:05,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:05,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:05,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:06,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:09,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:09,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-27 23:23:09,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 23:23:09,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-27 23:23:09,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:09,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:23:09,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-27 23:23:09,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-27 23:23:09,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 23:23:09,985 WARN L193 SmtUtils]: Spent 473.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 23:23:09,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:23:10,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:10,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:10,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:10,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:23:10,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:23:10,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 23:23:10,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:10,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:23:10,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:23:10,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:23:10,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:23:10,137 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 23:23:10,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [286570237] [2020-10-27 23:23:10,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:23:10,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:23:10,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367411268] [2020-10-27 23:23:10,152 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:23:10,152 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:23:10,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:23:10,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:23:10,179 INFO L87 Difference]: Start difference. First operand 386 states. Second operand 4 states. [2020-10-27 23:23:10,756 WARN L193 SmtUtils]: Spent 480.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2020-10-27 23:23:13,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:23:13,073 INFO L93 Difference]: Finished difference Result 681 states and 1209 transitions. [2020-10-27 23:23:13,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:23:13,075 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 144 [2020-10-27 23:23:13,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:23:13,095 INFO L225 Difference]: With dead ends: 681 [2020-10-27 23:23:13,095 INFO L226 Difference]: Without dead ends: 540 [2020-10-27 23:23:13,100 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:23:13,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2020-10-27 23:23:13,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 537. [2020-10-27 23:23:13,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 537 states. [2020-10-27 23:23:13,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 790 transitions. [2020-10-27 23:23:13,215 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 790 transitions. Word has length 144 [2020-10-27 23:23:13,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:23:13,219 INFO L481 AbstractCegarLoop]: Abstraction has 537 states and 790 transitions. [2020-10-27 23:23:13,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:23:13,219 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 790 transitions. [2020-10-27 23:23:13,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-27 23:23:13,229 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:23:13,229 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:23:13,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 23:23:13,230 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:23:13,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:23:13,234 INFO L82 PathProgramCache]: Analyzing trace with hash 1556500780, now seen corresponding path program 1 times [2020-10-27 23:23:13,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:23:13,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [112238891] [2020-10-27 23:23:13,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:23:13,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:13,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:13,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:13,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:13,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:13,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:14,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:14,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:14,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:14,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:14,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:15,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:15,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:16,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:18,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:18,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-27 23:23:18,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 23:23:18,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-27 23:23:18,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:18,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:23:18,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 23:23:18,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-27 23:23:18,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:23:19,053 WARN L193 SmtUtils]: Spent 533.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 23:23:19,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:23:19,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:19,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:19,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:19,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:23:19,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:23:19,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 23:23:19,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:19,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:23:19,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:23:19,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:23:19,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:23:19,151 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 23:23:19,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [112238891] [2020-10-27 23:23:19,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:23:19,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:23:19,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906421726] [2020-10-27 23:23:19,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:23:19,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:23:19,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:23:19,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:23:19,163 INFO L87 Difference]: Start difference. First operand 537 states and 790 transitions. Second operand 5 states. [2020-10-27 23:23:21,710 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-27 23:23:23,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:23:23,104 INFO L93 Difference]: Finished difference Result 1550 states and 2273 transitions. [2020-10-27 23:23:23,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 23:23:23,105 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2020-10-27 23:23:23,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:23:23,120 INFO L225 Difference]: With dead ends: 1550 [2020-10-27 23:23:23,120 INFO L226 Difference]: Without dead ends: 1030 [2020-10-27 23:23:23,130 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:23:23,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2020-10-27 23:23:23,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 1013. [2020-10-27 23:23:23,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1013 states. [2020-10-27 23:23:23,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 1477 transitions. [2020-10-27 23:23:23,234 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 1477 transitions. Word has length 144 [2020-10-27 23:23:23,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:23:23,235 INFO L481 AbstractCegarLoop]: Abstraction has 1013 states and 1477 transitions. [2020-10-27 23:23:23,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:23:23,235 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 1477 transitions. [2020-10-27 23:23:23,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-27 23:23:23,243 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:23:23,244 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:23:23,244 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 23:23:23,245 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:23:23,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:23:23,247 INFO L82 PathProgramCache]: Analyzing trace with hash -924237964, now seen corresponding path program 1 times [2020-10-27 23:23:23,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:23:23,249 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [230638227] [2020-10-27 23:23:23,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:23:23,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:23,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:23,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:23,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:23,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:23,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:23,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:24,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:24,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:24,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:24,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:26,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:27,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:28,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:28,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-27 23:23:28,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 23:23:28,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-27 23:23:28,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:28,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:23:28,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 23:23:28,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 23:23:28,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:23:28,995 WARN L193 SmtUtils]: Spent 546.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 23:23:28,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:23:29,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:29,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:29,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:29,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:23:29,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:23:29,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 23:23:29,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:29,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:23:29,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:23:29,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:23:29,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 23:23:29,119 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 23:23:29,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [230638227] [2020-10-27 23:23:29,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:23:29,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:23:29,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103203747] [2020-10-27 23:23:29,122 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:23:29,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:23:29,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:23:29,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:23:29,125 INFO L87 Difference]: Start difference. First operand 1013 states and 1477 transitions. Second operand 5 states. [2020-10-27 23:23:31,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:23:31,317 INFO L93 Difference]: Finished difference Result 1941 states and 2841 transitions. [2020-10-27 23:23:31,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:23:31,318 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2020-10-27 23:23:31,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:23:31,324 INFO L225 Difference]: With dead ends: 1941 [2020-10-27 23:23:31,325 INFO L226 Difference]: Without dead ends: 1013 [2020-10-27 23:23:31,328 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:23:31,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1013 states. [2020-10-27 23:23:31,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1013 to 1013. [2020-10-27 23:23:31,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1013 states. [2020-10-27 23:23:31,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 1475 transitions. [2020-10-27 23:23:31,382 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 1475 transitions. Word has length 145 [2020-10-27 23:23:31,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:23:31,382 INFO L481 AbstractCegarLoop]: Abstraction has 1013 states and 1475 transitions. [2020-10-27 23:23:31,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:23:31,383 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 1475 transitions. [2020-10-27 23:23:31,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-27 23:23:31,385 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:23:31,386 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:23:31,386 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 23:23:31,386 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:23:31,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:23:31,387 INFO L82 PathProgramCache]: Analyzing trace with hash -1439377537, now seen corresponding path program 1 times [2020-10-27 23:23:31,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:23:31,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1974469101] [2020-10-27 23:23:31,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:23:31,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:31,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:31,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:31,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:31,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:31,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:31,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:31,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:31,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:32,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:32,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:32,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:32,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:36,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:36,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-27 23:23:36,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 23:23:36,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 23:23:36,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:36,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:23:36,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-27 23:23:36,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 23:23:36,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:23:37,041 WARN L193 SmtUtils]: Spent 480.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 23:23:37,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:23:37,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:37,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:37,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:37,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:23:37,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:23:37,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 23:23:37,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:37,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:23:37,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:23:37,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:23:37,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 23:23:37,155 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 23:23:37,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1974469101] [2020-10-27 23:23:37,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:23:37,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:23:37,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508189440] [2020-10-27 23:23:37,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:23:37,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:23:37,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:23:37,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:23:37,159 INFO L87 Difference]: Start difference. First operand 1013 states and 1475 transitions. Second operand 4 states. [2020-10-27 23:23:40,011 WARN L193 SmtUtils]: Spent 429.00 ms on a formula simplification that was a NOOP. DAG size: 228 [2020-10-27 23:23:41,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:23:41,266 INFO L93 Difference]: Finished difference Result 2333 states and 3419 transitions. [2020-10-27 23:23:41,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:23:41,267 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2020-10-27 23:23:41,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:23:41,275 INFO L225 Difference]: With dead ends: 2333 [2020-10-27 23:23:41,275 INFO L226 Difference]: Without dead ends: 1455 [2020-10-27 23:23:41,278 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:23:41,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1455 states. [2020-10-27 23:23:41,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1455 to 1436. [2020-10-27 23:23:41,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1436 states. [2020-10-27 23:23:41,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 2072 transitions. [2020-10-27 23:23:41,378 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 2072 transitions. Word has length 146 [2020-10-27 23:23:41,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:23:41,379 INFO L481 AbstractCegarLoop]: Abstraction has 1436 states and 2072 transitions. [2020-10-27 23:23:41,379 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:23:41,379 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 2072 transitions. [2020-10-27 23:23:41,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-27 23:23:41,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:23:41,383 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:23:41,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 23:23:41,383 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:23:41,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:23:41,384 INFO L82 PathProgramCache]: Analyzing trace with hash -1722944367, now seen corresponding path program 1 times [2020-10-27 23:23:41,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:23:41,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [183708692] [2020-10-27 23:23:41,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:23:41,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:41,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:41,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:41,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:41,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:42,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:42,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:42,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:42,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:42,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:42,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:43,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:43,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:46,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:46,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-27 23:23:46,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 23:23:46,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 23:23:46,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:46,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:23:46,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 23:23:46,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-27 23:23:46,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:23:46,953 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 23:23:46,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:23:46,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:46,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:46,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:46,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:23:46,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:23:46,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 23:23:46,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:46,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:23:46,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:23:46,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:23:46,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:23:47,040 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 23:23:47,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [183708692] [2020-10-27 23:23:47,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:23:47,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:23:47,041 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116303194] [2020-10-27 23:23:47,041 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:23:47,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:23:47,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:23:47,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:23:47,042 INFO L87 Difference]: Start difference. First operand 1436 states and 2072 transitions. Second operand 5 states. [2020-10-27 23:23:50,045 WARN L193 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-27 23:23:51,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:23:51,571 INFO L93 Difference]: Finished difference Result 4179 states and 6013 transitions. [2020-10-27 23:23:51,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 23:23:51,572 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-10-27 23:23:51,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:23:51,587 INFO L225 Difference]: With dead ends: 4179 [2020-10-27 23:23:51,587 INFO L226 Difference]: Without dead ends: 2785 [2020-10-27 23:23:51,592 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:23:51,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2785 states. [2020-10-27 23:23:51,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2785 to 2757. [2020-10-27 23:23:51,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2757 states. [2020-10-27 23:23:51,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2757 states to 2757 states and 3939 transitions. [2020-10-27 23:23:51,754 INFO L78 Accepts]: Start accepts. Automaton has 2757 states and 3939 transitions. Word has length 152 [2020-10-27 23:23:51,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:23:51,755 INFO L481 AbstractCegarLoop]: Abstraction has 2757 states and 3939 transitions. [2020-10-27 23:23:51,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:23:51,755 INFO L276 IsEmpty]: Start isEmpty. Operand 2757 states and 3939 transitions. [2020-10-27 23:23:51,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-27 23:23:51,787 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:23:51,787 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:23:51,788 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 23:23:51,788 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:23:51,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:23:51,788 INFO L82 PathProgramCache]: Analyzing trace with hash 1039673558, now seen corresponding path program 1 times [2020-10-27 23:23:51,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:23:51,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [451302923] [2020-10-27 23:23:51,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:23:51,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:51,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:51,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:51,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:52,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:52,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:52,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:52,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:52,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:52,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:53,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:55,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:55,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:56,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:56,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-27 23:23:56,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 23:23:56,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 23:23:56,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:56,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:23:56,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 23:23:56,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 23:23:56,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:23:57,277 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 23:23:57,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:23:57,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:23:57,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:23:57,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:23:57,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:23:57,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:23:57,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 23:23:57,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:23:57,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:23:57,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:23:57,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:23:57,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:23:57,337 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 23:23:57,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [451302923] [2020-10-27 23:23:57,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:23:57,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:23:57,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639020770] [2020-10-27 23:23:57,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:23:57,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:23:57,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:23:57,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:23:57,340 INFO L87 Difference]: Start difference. First operand 2757 states and 3939 transitions. Second operand 4 states. [2020-10-27 23:24:01,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:24:01,301 INFO L93 Difference]: Finished difference Result 8207 states and 11723 transitions. [2020-10-27 23:24:01,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 23:24:01,302 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 153 [2020-10-27 23:24:01,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:24:01,330 INFO L225 Difference]: With dead ends: 8207 [2020-10-27 23:24:01,330 INFO L226 Difference]: Without dead ends: 5495 [2020-10-27 23:24:01,338 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:24:01,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5495 states. [2020-10-27 23:24:01,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5495 to 2759. [2020-10-27 23:24:01,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2759 states. [2020-10-27 23:24:01,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2759 states to 2759 states and 3941 transitions. [2020-10-27 23:24:01,544 INFO L78 Accepts]: Start accepts. Automaton has 2759 states and 3941 transitions. Word has length 153 [2020-10-27 23:24:01,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:24:01,544 INFO L481 AbstractCegarLoop]: Abstraction has 2759 states and 3941 transitions. [2020-10-27 23:24:01,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:24:01,545 INFO L276 IsEmpty]: Start isEmpty. Operand 2759 states and 3941 transitions. [2020-10-27 23:24:01,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-27 23:24:01,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:24:01,551 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:24:01,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 23:24:01,552 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:24:01,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:24:01,552 INFO L82 PathProgramCache]: Analyzing trace with hash -680874354, now seen corresponding path program 1 times [2020-10-27 23:24:01,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:24:01,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [116471670] [2020-10-27 23:24:01,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:24:01,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:24:01,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:01,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:01,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:01,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:01,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:01,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:01,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:01,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:02,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:02,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:02,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:03,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:04,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:06,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:24:06,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-27 23:24:06,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 23:24:06,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-27 23:24:06,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:24:06,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:24:06,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-27 23:24:06,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-27 23:24:06,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:24:07,097 WARN L193 SmtUtils]: Spent 411.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 23:24:07,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:24:07,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:24:07,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:07,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:24:07,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:24:07,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:24:07,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 23:24:07,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:24:07,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:24:07,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:24:07,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:24:07,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:24:07,168 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 23:24:07,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [116471670] [2020-10-27 23:24:07,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:24:07,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:24:07,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832945426] [2020-10-27 23:24:07,170 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:24:07,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:24:07,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:24:07,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:24:07,171 INFO L87 Difference]: Start difference. First operand 2759 states and 3941 transitions. Second operand 4 states. [2020-10-27 23:24:10,099 WARN L193 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 228 [2020-10-27 23:24:11,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:24:11,432 INFO L93 Difference]: Finished difference Result 7726 states and 11052 transitions. [2020-10-27 23:24:11,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:24:11,433 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-10-27 23:24:11,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:24:11,456 INFO L225 Difference]: With dead ends: 7726 [2020-10-27 23:24:11,456 INFO L226 Difference]: Without dead ends: 5348 [2020-10-27 23:24:11,462 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:24:11,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5348 states. [2020-10-27 23:24:11,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5348 to 5320. [2020-10-27 23:24:11,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5320 states. [2020-10-27 23:24:11,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5320 states to 5320 states and 7512 transitions. [2020-10-27 23:24:11,814 INFO L78 Accepts]: Start accepts. Automaton has 5320 states and 7512 transitions. Word has length 154 [2020-10-27 23:24:11,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:24:11,815 INFO L481 AbstractCegarLoop]: Abstraction has 5320 states and 7512 transitions. [2020-10-27 23:24:11,815 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:24:11,815 INFO L276 IsEmpty]: Start isEmpty. Operand 5320 states and 7512 transitions. [2020-10-27 23:24:11,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-27 23:24:11,825 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:24:11,825 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:24:11,826 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 23:24:11,826 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:24:11,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:24:11,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1629324523, now seen corresponding path program 1 times [2020-10-27 23:24:11,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:24:11,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1959522380] [2020-10-27 23:24:11,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:24:11,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:24:11,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:11,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:12,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:12,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:12,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:12,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:12,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:12,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:12,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:12,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:12,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:13,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:13,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:13,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:14,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:14,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:14,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:15,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:16,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:16,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:24:16,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-27 23:24:16,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-27 23:24:16,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-27 23:24:16,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:24:16,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:24:16,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-27 23:24:16,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 23:24:16,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:24:17,486 WARN L193 SmtUtils]: Spent 470.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 23:24:17,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:24:17,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:24:17,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:17,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:24:17,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:24:17,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:24:17,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 23:24:17,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:24:17,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:24:17,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:24:17,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:24:17,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:24:17,572 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 23:24:17,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1959522380] [2020-10-27 23:24:17,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:24:17,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:24:17,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400832902] [2020-10-27 23:24:17,574 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:24:17,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:24:17,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:24:17,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:24:17,575 INFO L87 Difference]: Start difference. First operand 5320 states and 7512 transitions. Second operand 5 states. [2020-10-27 23:24:19,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:24:19,759 INFO L93 Difference]: Finished difference Result 9040 states and 12791 transitions. [2020-10-27 23:24:19,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:24:19,760 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-10-27 23:24:19,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:24:19,774 INFO L225 Difference]: With dead ends: 9040 [2020-10-27 23:24:19,775 INFO L226 Difference]: Without dead ends: 4075 [2020-10-27 23:24:19,786 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 23:24:19,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4075 states. [2020-10-27 23:24:20,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4075 to 4075. [2020-10-27 23:24:20,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4075 states. [2020-10-27 23:24:20,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4075 states to 4075 states and 5733 transitions. [2020-10-27 23:24:20,128 INFO L78 Accepts]: Start accepts. Automaton has 4075 states and 5733 transitions. Word has length 154 [2020-10-27 23:24:20,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:24:20,128 INFO L481 AbstractCegarLoop]: Abstraction has 4075 states and 5733 transitions. [2020-10-27 23:24:20,129 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:24:20,129 INFO L276 IsEmpty]: Start isEmpty. Operand 4075 states and 5733 transitions. [2020-10-27 23:24:20,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-27 23:24:20,136 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:24:20,137 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:24:20,137 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 23:24:20,137 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:24:20,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:24:20,138 INFO L82 PathProgramCache]: Analyzing trace with hash 1295271700, now seen corresponding path program 1 times [2020-10-27 23:24:20,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:24:20,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1910095680] [2020-10-27 23:24:20,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:24:20,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:24:20,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:20,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:20,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:20,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:20,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:20,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:20,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:20,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:20,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:20,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:21,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:21,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:21,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:25,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:24:25,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-27 23:24:25,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 23:24:25,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-27 23:24:25,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:24:25,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:24:25,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-27 23:24:25,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-27 23:24:25,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:24:25,645 WARN L193 SmtUtils]: Spent 389.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 23:24:25,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:24:25,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:24:25,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:25,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:24:25,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:24:25,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:24:25,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 23:24:25,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:24:25,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:24:25,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:24:25,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:24:25,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:24:25,689 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 23:24:25,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1910095680] [2020-10-27 23:24:25,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:24:25,689 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:24:25,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397570755] [2020-10-27 23:24:25,690 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:24:25,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:24:25,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:24:25,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:24:25,691 INFO L87 Difference]: Start difference. First operand 4075 states and 5733 transitions. Second operand 4 states. [2020-10-27 23:24:28,057 WARN L193 SmtUtils]: Spent 428.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2020-10-27 23:24:28,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:24:28,959 INFO L93 Difference]: Finished difference Result 9915 states and 14133 transitions. [2020-10-27 23:24:28,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:24:28,959 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 160 [2020-10-27 23:24:28,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:24:28,990 INFO L225 Difference]: With dead ends: 9915 [2020-10-27 23:24:28,990 INFO L226 Difference]: Without dead ends: 7146 [2020-10-27 23:24:28,998 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:24:29,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7146 states. [2020-10-27 23:24:29,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7146 to 7118. [2020-10-27 23:24:29,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7118 states. [2020-10-27 23:24:29,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7118 states to 7118 states and 10034 transitions. [2020-10-27 23:24:29,462 INFO L78 Accepts]: Start accepts. Automaton has 7118 states and 10034 transitions. Word has length 160 [2020-10-27 23:24:29,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:24:29,462 INFO L481 AbstractCegarLoop]: Abstraction has 7118 states and 10034 transitions. [2020-10-27 23:24:29,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:24:29,463 INFO L276 IsEmpty]: Start isEmpty. Operand 7118 states and 10034 transitions. [2020-10-27 23:24:29,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-27 23:24:29,475 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:24:29,475 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:24:29,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 23:24:29,475 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:24:29,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:24:29,476 INFO L82 PathProgramCache]: Analyzing trace with hash -1555852711, now seen corresponding path program 1 times [2020-10-27 23:24:29,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:24:29,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2124755913] [2020-10-27 23:24:29,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:24:29,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:24:29,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:29,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:29,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:29,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:29,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:29,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:29,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:29,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:29,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:30,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:30,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:30,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:34,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:24:34,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-27 23:24:34,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 23:24:34,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 23:24:34,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:24:34,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:24:34,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-27 23:24:34,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-27 23:24:34,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:24:34,968 WARN L193 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 23:24:34,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:24:34,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:24:34,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:34,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:24:34,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:24:34,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:24:34,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 23:24:34,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:24:34,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:24:34,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:24:34,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:24:34,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:24:35,026 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 23:24:35,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2124755913] [2020-10-27 23:24:35,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:24:35,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:24:35,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403627798] [2020-10-27 23:24:35,028 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:24:35,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:24:35,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:24:35,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:24:35,029 INFO L87 Difference]: Start difference. First operand 7118 states and 10034 transitions. Second operand 5 states. [2020-10-27 23:24:35,497 WARN L193 SmtUtils]: Spent 419.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2020-10-27 23:24:38,657 WARN L193 SmtUtils]: Spent 424.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2020-10-27 23:24:40,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:24:40,824 INFO L93 Difference]: Finished difference Result 24724 states and 35233 transitions. [2020-10-27 23:24:40,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 23:24:40,825 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2020-10-27 23:24:40,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:24:40,870 INFO L225 Difference]: With dead ends: 24724 [2020-10-27 23:24:40,870 INFO L226 Difference]: Without dead ends: 18702 [2020-10-27 23:24:40,884 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 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 23:24:40,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18702 states. [2020-10-27 23:24:41,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18702 to 18646. [2020-10-27 23:24:41,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18646 states. [2020-10-27 23:24:41,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18646 states to 18646 states and 26272 transitions. [2020-10-27 23:24:41,885 INFO L78 Accepts]: Start accepts. Automaton has 18646 states and 26272 transitions. Word has length 160 [2020-10-27 23:24:41,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:24:41,886 INFO L481 AbstractCegarLoop]: Abstraction has 18646 states and 26272 transitions. [2020-10-27 23:24:41,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:24:41,886 INFO L276 IsEmpty]: Start isEmpty. Operand 18646 states and 26272 transitions. [2020-10-27 23:24:41,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-27 23:24:41,912 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:24:41,912 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:24:41,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 23:24:41,913 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:24:41,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:24:41,913 INFO L82 PathProgramCache]: Analyzing trace with hash 1599305694, now seen corresponding path program 1 times [2020-10-27 23:24:41,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:24:41,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [996941148] [2020-10-27 23:24:41,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:24:41,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:24:41,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:42,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:42,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:42,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:42,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:42,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:42,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:42,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:42,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:42,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:42,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:43,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:44,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:46,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:24:46,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-27 23:24:46,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 23:24:46,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 23:24:46,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:24:46,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 23:24:46,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 23:24:46,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-27 23:24:46,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:24:47,483 WARN L193 SmtUtils]: Spent 412.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 23:24:47,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:24:47,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:24:47,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:47,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:24:47,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:24:47,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:24:47,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 23:24:47,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:24:47,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:24:47,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:24:47,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:24:47,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:24:47,535 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 23:24:47,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [996941148] [2020-10-27 23:24:47,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:24:47,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 23:24:47,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957844905] [2020-10-27 23:24:47,536 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 23:24:47,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:24:47,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 23:24:47,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:24:47,537 INFO L87 Difference]: Start difference. First operand 18646 states and 26272 transitions. Second operand 5 states. [2020-10-27 23:24:50,989 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-27 23:24:53,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:24:53,280 INFO L93 Difference]: Finished difference Result 47545 states and 66985 transitions. [2020-10-27 23:24:53,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 23:24:53,281 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2020-10-27 23:24:53,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:24:53,351 INFO L225 Difference]: With dead ends: 47545 [2020-10-27 23:24:53,351 INFO L226 Difference]: Without dead ends: 28976 [2020-10-27 23:24:53,382 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:24:53,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28976 states. [2020-10-27 23:24:55,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28976 to 28949. [2020-10-27 23:24:55,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28949 states. [2020-10-27 23:24:55,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28949 states to 28949 states and 40368 transitions. [2020-10-27 23:24:55,339 INFO L78 Accepts]: Start accepts. Automaton has 28949 states and 40368 transitions. Word has length 160 [2020-10-27 23:24:55,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:24:55,340 INFO L481 AbstractCegarLoop]: Abstraction has 28949 states and 40368 transitions. [2020-10-27 23:24:55,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 23:24:55,340 INFO L276 IsEmpty]: Start isEmpty. Operand 28949 states and 40368 transitions. [2020-10-27 23:24:55,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-27 23:24:55,371 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:24:55,372 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:24:55,372 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 23:24:55,372 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:24:55,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:24:55,373 INFO L82 PathProgramCache]: Analyzing trace with hash 486118629, now seen corresponding path program 1 times [2020-10-27 23:24:55,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:24:55,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1395211064] [2020-10-27 23:24:55,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:24:55,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:24:55,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:55,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:55,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:55,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:55,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:55,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:55,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:56,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:56,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:56,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:24:57,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:00,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:25:00,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-27 23:25:00,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 23:25:00,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 23:25:00,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:25:00,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 23:25:00,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-27 23:25:00,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 23:25:00,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:25:01,124 WARN L193 SmtUtils]: Spent 396.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 23:25:01,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:25:01,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:25:01,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:01,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:25:01,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:25:01,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:25:01,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 23:25:01,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:25:01,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:25:01,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:25:01,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:25:01,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:25:01,221 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 23:25:01,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1395211064] [2020-10-27 23:25:01,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:25:01,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-27 23:25:01,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232456676] [2020-10-27 23:25:01,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 23:25:01,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:25:01,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 23:25:01,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-27 23:25:01,229 INFO L87 Difference]: Start difference. First operand 28949 states and 40368 transitions. Second operand 12 states. [2020-10-27 23:25:01,747 WARN L193 SmtUtils]: Spent 429.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-27 23:25:09,000 WARN L193 SmtUtils]: Spent 892.00 ms on a formula simplification. DAG size of input: 230 DAG size of output: 229 [2020-10-27 23:25:09,486 WARN L193 SmtUtils]: Spent 436.00 ms on a formula simplification that was a NOOP. DAG size: 228 [2020-10-27 23:25:10,300 WARN L193 SmtUtils]: Spent 488.00 ms on a formula simplification that was a NOOP. DAG size: 230 [2020-10-27 23:25:11,819 WARN L193 SmtUtils]: Spent 983.00 ms on a formula simplification. DAG size of input: 232 DAG size of output: 231 [2020-10-27 23:25:19,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:25:19,471 INFO L93 Difference]: Finished difference Result 110084 states and 158834 transitions. [2020-10-27 23:25:19,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-27 23:25:19,473 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 161 [2020-10-27 23:25:19,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:25:19,715 INFO L225 Difference]: With dead ends: 110084 [2020-10-27 23:25:19,715 INFO L226 Difference]: Without dead ends: 90119 [2020-10-27 23:25:19,767 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 384 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=482, Invalid=1410, Unknown=0, NotChecked=0, Total=1892 [2020-10-27 23:25:19,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90119 states. [2020-10-27 23:25:23,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90119 to 41105. [2020-10-27 23:25:23,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41105 states. [2020-10-27 23:25:24,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41105 states to 41105 states and 58282 transitions. [2020-10-27 23:25:24,028 INFO L78 Accepts]: Start accepts. Automaton has 41105 states and 58282 transitions. Word has length 161 [2020-10-27 23:25:24,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:25:24,028 INFO L481 AbstractCegarLoop]: Abstraction has 41105 states and 58282 transitions. [2020-10-27 23:25:24,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 23:25:24,028 INFO L276 IsEmpty]: Start isEmpty. Operand 41105 states and 58282 transitions. [2020-10-27 23:25:24,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-27 23:25:24,051 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:25:24,051 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:25:24,051 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 23:25:24,052 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:25:24,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:25:24,052 INFO L82 PathProgramCache]: Analyzing trace with hash -612537281, now seen corresponding path program 1 times [2020-10-27 23:25:24,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:25:24,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [452489990] [2020-10-27 23:25:24,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:25:24,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:25:24,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:24,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:24,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:24,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:24,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:24,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:24,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:24,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:24,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:25,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:26,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:28,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:29,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:25:29,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-27 23:25:29,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 23:25:29,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 23:25:29,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:25:29,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 23:25:29,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-27 23:25:29,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-27 23:25:29,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:25:29,604 WARN L193 SmtUtils]: Spent 415.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 23:25:29,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:25:29,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:25:29,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:29,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:25:29,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:25:29,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:25:29,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 23:25:29,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:25:29,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:25:29,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:25:29,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:25:29,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:25:29,660 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 23:25:29,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [452489990] [2020-10-27 23:25:29,661 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:25:29,661 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 23:25:29,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512779798] [2020-10-27 23:25:29,662 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 23:25:29,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:25:29,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 23:25:29,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-27 23:25:29,662 INFO L87 Difference]: Start difference. First operand 41105 states and 58282 transitions. Second operand 7 states. [2020-10-27 23:25:30,141 WARN L193 SmtUtils]: Spent 423.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2020-10-27 23:25:34,292 WARN L193 SmtUtils]: Spent 438.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-27 23:25:34,747 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification that was a NOOP. DAG size: 231 [2020-10-27 23:25:35,255 WARN L193 SmtUtils]: Spent 423.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-27 23:25:35,731 WARN L193 SmtUtils]: Spent 435.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-27 23:25:36,204 WARN L193 SmtUtils]: Spent 437.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2020-10-27 23:25:37,243 WARN L193 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-27 23:25:37,772 WARN L193 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-27 23:25:44,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:25:44,585 INFO L93 Difference]: Finished difference Result 112269 states and 166696 transitions. [2020-10-27 23:25:44,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 23:25:44,586 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 161 [2020-10-27 23:25:44,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:25:44,809 INFO L225 Difference]: With dead ends: 112269 [2020-10-27 23:25:44,809 INFO L226 Difference]: Without dead ends: 82397 [2020-10-27 23:25:44,872 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=126, Invalid=294, Unknown=0, NotChecked=0, Total=420 [2020-10-27 23:25:44,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82397 states. [2020-10-27 23:25:50,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82397 to 62614. [2020-10-27 23:25:50,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62614 states. [2020-10-27 23:25:50,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62614 states to 62614 states and 91910 transitions. [2020-10-27 23:25:50,442 INFO L78 Accepts]: Start accepts. Automaton has 62614 states and 91910 transitions. Word has length 161 [2020-10-27 23:25:50,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:25:50,442 INFO L481 AbstractCegarLoop]: Abstraction has 62614 states and 91910 transitions. [2020-10-27 23:25:50,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 23:25:50,442 INFO L276 IsEmpty]: Start isEmpty. Operand 62614 states and 91910 transitions. [2020-10-27 23:25:50,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-27 23:25:50,464 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:25:50,464 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:25:50,464 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 23:25:50,464 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:25:50,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:25:50,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1315446693, now seen corresponding path program 1 times [2020-10-27 23:25:50,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:25:50,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [723862927] [2020-10-27 23:25:50,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:25:50,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:25:50,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:50,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:50,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:50,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:50,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:50,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:50,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:51,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:52,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:52,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:52,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:53,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:53,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:55,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:55,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:55,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:55,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:25:55,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-27 23:25:55,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 23:25:55,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 23:25:55,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:25:55,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:25:55,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 23:25:55,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 23:25:55,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:25:55,927 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 23:25:55,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:25:55,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:25:55,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:25:55,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:25:55,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:25:55,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:25:55,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 23:25:55,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:25:55,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:25:55,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:25:55,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:25:55,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:25:55,989 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 23:25:55,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [723862927] [2020-10-27 23:25:55,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:25:55,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:25:55,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768153268] [2020-10-27 23:25:55,990 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:25:55,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:25:55,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:25:55,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:25:55,992 INFO L87 Difference]: Start difference. First operand 62614 states and 91910 transitions. Second operand 4 states. [2020-10-27 23:26:05,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:26:05,219 INFO L93 Difference]: Finished difference Result 125581 states and 184063 transitions. [2020-10-27 23:26:05,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 23:26:05,220 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 161 [2020-10-27 23:26:05,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:26:05,474 INFO L225 Difference]: With dead ends: 125581 [2020-10-27 23:26:05,474 INFO L226 Difference]: Without dead ends: 76531 [2020-10-27 23:26:05,559 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:26:05,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76531 states. [2020-10-27 23:26:10,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76531 to 62614. [2020-10-27 23:26:10,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62614 states. [2020-10-27 23:26:10,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62614 states to 62614 states and 91907 transitions. [2020-10-27 23:26:10,772 INFO L78 Accepts]: Start accepts. Automaton has 62614 states and 91907 transitions. Word has length 161 [2020-10-27 23:26:10,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 23:26:10,772 INFO L481 AbstractCegarLoop]: Abstraction has 62614 states and 91907 transitions. [2020-10-27 23:26:10,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 23:26:10,773 INFO L276 IsEmpty]: Start isEmpty. Operand 62614 states and 91907 transitions. [2020-10-27 23:26:10,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-27 23:26:10,794 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 23:26:10,794 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 23:26:10,794 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 23:26:10,794 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 23:26:10,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 23:26:10,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1104352203, now seen corresponding path program 1 times [2020-10-27 23:26:10,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 23:26:10,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [725966366] [2020-10-27 23:26:10,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 23:26:10,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:26:10,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:10,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:10,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:10,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:11,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:11,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:11,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:11,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:11,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:11,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:15,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:26:15,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-27 23:26:15,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 23:26:15,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 23:26:15,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:26:15,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 23:26:15,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-27 23:26:15,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 23:26:15,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:26:16,282 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 23:26:16,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 23:26:16,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 23:26:16,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 23:26:16,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 23:26:16,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 23:26:16,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 23:26:16,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 23:26:16,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 23:26:16,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 23:26:16,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 23:26:16,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 23:26:16,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 23:26:16,354 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 23:26:16,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [725966366] [2020-10-27 23:26:16,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 23:26:16,354 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 23:26:16,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966977157] [2020-10-27 23:26:16,355 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 23:26:16,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 23:26:16,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 23:26:16,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 23:26:16,356 INFO L87 Difference]: Start difference. First operand 62614 states and 91907 transitions. Second operand 4 states. [2020-10-27 23:26:20,610 WARN L193 SmtUtils]: Spent 454.00 ms on a formula simplification that was a NOOP. DAG size: 228 [2020-10-27 23:26:28,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 23:26:28,994 INFO L93 Difference]: Finished difference Result 172354 states and 252673 transitions. [2020-10-27 23:26:28,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 23:26:28,995 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 162 [2020-10-27 23:26:28,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 23:26:29,378 INFO L225 Difference]: With dead ends: 172354 [2020-10-27 23:26:29,379 INFO L226 Difference]: Without dead ends: 111403 [2020-10-27 23:26:29,453 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 23:26:29,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111403 states.