/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_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 00:27:10,854 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 00:27:10,857 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 00:27:10,893 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 00:27:10,894 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 00:27:10,895 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 00:27:10,897 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 00:27:10,900 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 00:27:10,902 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 00:27:10,903 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 00:27:10,905 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 00:27:10,906 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 00:27:10,907 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 00:27:10,908 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 00:27:10,910 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 00:27:10,911 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 00:27:10,913 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 00:27:10,914 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 00:27:10,916 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 00:27:10,921 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 00:27:10,924 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 00:27:10,932 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 00:27:10,933 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 00:27:10,934 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 00:27:10,943 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 00:27:10,948 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 00:27:10,948 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 00:27:10,960 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 00:27:10,960 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 00:27:10,962 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 00:27:10,962 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 00:27:10,963 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 00:27:10,964 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 00:27:10,965 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 00:27:10,966 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 00:27:10,966 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 00:27:10,967 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 00:27:10,967 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 00:27:10,968 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 00:27:10,969 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 00:27:10,970 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 00:27:10,971 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 00:27:11,000 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 00:27:11,000 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 00:27:11,002 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 00:27:11,002 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 00:27:11,002 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 00:27:11,002 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 00:27:11,003 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 00:27:11,003 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 00:27:11,003 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 00:27:11,003 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 00:27:11,003 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 00:27:11,004 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 00:27:11,004 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 00:27:11,004 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 00:27:11,004 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 00:27:11,004 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 00:27:11,004 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 00:27:11,005 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 00:27:11,005 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 00:27:11,005 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 00:27:11,005 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 00:27:11,005 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 00:27:11,006 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 00:27:11,006 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 00:27:11,006 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 00:27:11,006 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 00:27:11,006 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 00:27:11,007 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 00:27:11,007 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 00:27:11,007 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-28 00:27:11,383 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 00:27:11,409 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 00:27:11,412 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 00:27:11,414 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 00:27:11,415 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 00:27:11,416 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-28 00:27:11,518 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/817a9460b/8473fc03c6374bb5babf8b634067ca13/FLAGd064f29b9 [2020-10-28 00:27:12,323 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 00:27:12,325 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-28 00:27:12,345 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/817a9460b/8473fc03c6374bb5babf8b634067ca13/FLAGd064f29b9 [2020-10-28 00:27:12,573 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/817a9460b/8473fc03c6374bb5babf8b634067ca13 [2020-10-28 00:27:12,579 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 00:27:12,588 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 00:27:12,593 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 00:27:12,593 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 00:27:12,598 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 00:27:12,599 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:27:12" (1/1) ... [2020-10-28 00:27:12,608 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f74259e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:27:12, skipping insertion in model container [2020-10-28 00:27:12,609 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:27:12" (1/1) ... [2020-10-28 00:27:12,620 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 00:27:12,714 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 00:27:13,300 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 00:27:13,316 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 00:27:13,508 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 00:27:13,530 INFO L208 MainTranslator]: Completed translation [2020-10-28 00:27:13,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:27:13 WrapperNode [2020-10-28 00:27:13,531 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 00:27:13,532 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 00:27:13,533 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 00:27:13,533 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 00:27:13,548 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:27:13" (1/1) ... [2020-10-28 00:27:13,548 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:27:13" (1/1) ... [2020-10-28 00:27:13,569 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:27:13" (1/1) ... [2020-10-28 00:27:13,574 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:27:13" (1/1) ... [2020-10-28 00:27:13,631 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:27:13" (1/1) ... [2020-10-28 00:27:13,675 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:27:13" (1/1) ... [2020-10-28 00:27:13,686 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:27:13" (1/1) ... [2020-10-28 00:27:13,698 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 00:27:13,706 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 00:27:13,706 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 00:27:13,707 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 00:27:13,708 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:27:13" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 00:27:13,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 00:27:13,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 00:27:13,797 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 00:27:13,797 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 00:27:13,798 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 00:27:13,798 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 00:27:13,799 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 00:27:13,799 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 00:27:13,800 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 00:27:13,800 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 00:27:13,801 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-28 00:27:13,801 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 00:27:13,801 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 00:27:13,801 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 00:27:13,801 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 00:27:13,802 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 00:27:13,802 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 00:27:13,803 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 00:27:13,803 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 00:27:13,803 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 00:27:13,803 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 00:27:13,803 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 00:27:13,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 00:27:13,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 00:27:13,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 00:27:13,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 00:27:13,804 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 00:27:13,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 00:27:15,437 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 00:27:15,437 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 00:27:15,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:27:15 BoogieIcfgContainer [2020-10-28 00:27:15,440 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 00:27:15,442 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 00:27:15,443 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 00:27:15,446 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 00:27:15,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:27:12" (1/3) ... [2020-10-28 00:27:15,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4260bc85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:27:15, skipping insertion in model container [2020-10-28 00:27:15,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:27:13" (2/3) ... [2020-10-28 00:27:15,448 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4260bc85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:27:15, skipping insertion in model container [2020-10-28 00:27:15,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:27:15" (3/3) ... [2020-10-28 00:27:15,450 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-28 00:27:15,462 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 00:27:15,468 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 00:27:15,482 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 00:27:15,512 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 00:27:15,513 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 00:27:15,513 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 00:27:15,513 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 00:27:15,513 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 00:27:15,513 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 00:27:15,514 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 00:27:15,514 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 00:27:15,540 INFO L276 IsEmpty]: Start isEmpty. Operand 353 states. [2020-10-28 00:27:15,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-28 00:27:15,560 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:27:15,561 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] [2020-10-28 00:27:15,562 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:27:15,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:27:15,569 INFO L82 PathProgramCache]: Analyzing trace with hash -477280769, now seen corresponding path program 1 times [2020-10-28 00:27:15,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:27:15,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [893339881] [2020-10-28 00:27:15,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:27:15,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:27:16,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:16,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:16,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:17,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:17,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:17,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:17,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:17,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:17,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:18,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:19,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:19,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:20,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:27:20,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-28 00:27:20,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 00:27:20,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 00:27:21,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:27:21,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:27:21,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-28 00:27:21,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 00:27:21,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 00:27:21,597 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 00:27:21,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:27:21,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:27:21,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:21,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:27:21,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:27:21,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:27:21,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 00:27:21,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:27:21,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:27:21,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:27:21,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:27:21,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:27:21,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:27:21,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [893339881] [2020-10-28 00:27:21,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:27:21,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:27:21,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864649973] [2020-10-28 00:27:21,742 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:27:21,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:27:21,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:27:21,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:27:21,766 INFO L87 Difference]: Start difference. First operand 353 states. Second operand 4 states. [2020-10-28 00:27:22,264 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-28 00:27:24,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:27:24,455 INFO L93 Difference]: Finished difference Result 697 states and 1202 transitions. [2020-10-28 00:27:24,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:27:24,457 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 160 [2020-10-28 00:27:24,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:27:24,495 INFO L225 Difference]: With dead ends: 697 [2020-10-28 00:27:24,497 INFO L226 Difference]: Without dead ends: 563 [2020-10-28 00:27:24,506 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:27:24,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2020-10-28 00:27:24,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 560. [2020-10-28 00:27:24,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 560 states. [2020-10-28 00:27:24,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 835 transitions. [2020-10-28 00:27:24,633 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 835 transitions. Word has length 160 [2020-10-28 00:27:24,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:27:24,634 INFO L481 AbstractCegarLoop]: Abstraction has 560 states and 835 transitions. [2020-10-28 00:27:24,635 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:27:24,635 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 835 transitions. [2020-10-28 00:27:24,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-28 00:27:24,640 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:27:24,641 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] [2020-10-28 00:27:24,641 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 00:27:24,641 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:27:24,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:27:24,642 INFO L82 PathProgramCache]: Analyzing trace with hash -955239738, now seen corresponding path program 1 times [2020-10-28 00:27:24,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:27:24,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1076560479] [2020-10-28 00:27:24,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:27:24,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:27:24,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:24,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:24,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:25,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:25,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:25,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:25,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:25,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:25,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:25,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:26,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:26,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:29,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:27:29,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-28 00:27:29,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 00:27:29,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-28 00:27:29,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:27:29,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:27:29,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-28 00:27:29,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-28 00:27:29,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:27:30,151 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 00:27:30,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:27:30,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:27:30,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:30,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:27:30,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:27:30,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:27:30,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 00:27:30,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:27:30,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:27:30,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:27:30,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:27:30,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:27:30,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:27:30,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1076560479] [2020-10-28 00:27:30,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:27:30,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:27:30,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630341464] [2020-10-28 00:27:30,274 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:27:30,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:27:30,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:27:30,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:27:30,277 INFO L87 Difference]: Start difference. First operand 560 states and 835 transitions. Second operand 4 states. [2020-10-28 00:27:30,683 WARN L193 SmtUtils]: Spent 360.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-28 00:27:32,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:27:32,475 INFO L93 Difference]: Finished difference Result 1190 states and 1822 transitions. [2020-10-28 00:27:32,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:27:32,476 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 160 [2020-10-28 00:27:32,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:27:32,484 INFO L225 Difference]: With dead ends: 1190 [2020-10-28 00:27:32,485 INFO L226 Difference]: Without dead ends: 975 [2020-10-28 00:27:32,488 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:27:32,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2020-10-28 00:27:32,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 972. [2020-10-28 00:27:32,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 972 states. [2020-10-28 00:27:32,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1463 transitions. [2020-10-28 00:27:32,543 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1463 transitions. Word has length 160 [2020-10-28 00:27:32,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:27:32,544 INFO L481 AbstractCegarLoop]: Abstraction has 972 states and 1463 transitions. [2020-10-28 00:27:32,544 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:27:32,544 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1463 transitions. [2020-10-28 00:27:32,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-10-28 00:27:32,549 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:27:32,549 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] [2020-10-28 00:27:32,549 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 00:27:32,550 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:27:32,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:27:32,550 INFO L82 PathProgramCache]: Analyzing trace with hash 883241763, now seen corresponding path program 1 times [2020-10-28 00:27:32,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:27:32,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1454957791] [2020-10-28 00:27:32,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:27:32,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:27:32,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:32,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:32,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:33,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:33,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:33,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:33,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:33,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:33,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:33,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:34,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:34,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:37,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:27:37,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-28 00:27:37,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 00:27:37,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-28 00:27:37,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:27:37,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:27:37,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 00:27:37,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-28 00:27:37,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:27:38,186 WARN L193 SmtUtils]: Spent 426.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 00:27:38,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:27:38,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:27:38,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:38,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:27:38,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:27:38,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:27:38,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 00:27:38,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:27:38,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:27:38,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:27:38,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:27:38,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 00:27:38,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:27:38,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1454957791] [2020-10-28 00:27:38,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:27:38,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:27:38,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39880527] [2020-10-28 00:27:38,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:27:38,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:27:38,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:27:38,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:27:38,317 INFO L87 Difference]: Start difference. First operand 972 states and 1463 transitions. Second operand 5 states. [2020-10-28 00:27:40,723 WARN L193 SmtUtils]: Spent 373.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 00:27:41,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:27:41,841 INFO L93 Difference]: Finished difference Result 2835 states and 4258 transitions. [2020-10-28 00:27:41,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 00:27:41,842 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 160 [2020-10-28 00:27:41,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:27:41,855 INFO L225 Difference]: With dead ends: 2835 [2020-10-28 00:27:41,859 INFO L226 Difference]: Without dead ends: 1874 [2020-10-28 00:27:41,866 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 00:27:41,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1874 states. [2020-10-28 00:27:41,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1874 to 1871. [2020-10-28 00:27:41,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1871 states. [2020-10-28 00:27:41,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1871 states to 1871 states and 2787 transitions. [2020-10-28 00:27:41,982 INFO L78 Accepts]: Start accepts. Automaton has 1871 states and 2787 transitions. Word has length 160 [2020-10-28 00:27:41,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:27:41,982 INFO L481 AbstractCegarLoop]: Abstraction has 1871 states and 2787 transitions. [2020-10-28 00:27:41,983 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:27:41,983 INFO L276 IsEmpty]: Start isEmpty. Operand 1871 states and 2787 transitions. [2020-10-28 00:27:41,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-28 00:27:41,995 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:27:41,995 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] [2020-10-28 00:27:41,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 00:27:41,996 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:27:41,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:27:41,996 INFO L82 PathProgramCache]: Analyzing trace with hash 338597593, now seen corresponding path program 1 times [2020-10-28 00:27:41,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:27:41,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1707625695] [2020-10-28 00:27:41,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:27:42,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:27:42,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:42,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:42,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:42,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:42,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:42,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:42,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:42,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:42,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:43,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:45,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:47,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:27:47,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-28 00:27:47,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 00:27:47,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-28 00:27:47,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:27:47,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:27:47,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 00:27:47,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 00:27:47,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:27:47,495 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 00:27:47,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:27:47,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:27:47,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:47,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:27:47,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:27:47,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:27:47,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 00:27:47,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:27:47,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:27:47,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:27:47,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:27:47,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:27:47,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:27:47,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1707625695] [2020-10-28 00:27:47,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:27:47,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:27:47,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929748647] [2020-10-28 00:27:47,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:27:47,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:27:47,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:27:47,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:27:47,579 INFO L87 Difference]: Start difference. First operand 1871 states and 2787 transitions. Second operand 4 states. [2020-10-28 00:27:49,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:27:49,369 INFO L93 Difference]: Finished difference Result 5576 states and 8310 transitions. [2020-10-28 00:27:49,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 00:27:49,370 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 161 [2020-10-28 00:27:49,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:27:49,390 INFO L225 Difference]: With dead ends: 5576 [2020-10-28 00:27:49,390 INFO L226 Difference]: Without dead ends: 3728 [2020-10-28 00:27:49,396 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:27:49,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3728 states. [2020-10-28 00:27:49,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3728 to 1874. [2020-10-28 00:27:49,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1874 states. [2020-10-28 00:27:49,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1874 states to 1874 states and 2791 transitions. [2020-10-28 00:27:49,535 INFO L78 Accepts]: Start accepts. Automaton has 1874 states and 2791 transitions. Word has length 161 [2020-10-28 00:27:49,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:27:49,536 INFO L481 AbstractCegarLoop]: Abstraction has 1874 states and 2791 transitions. [2020-10-28 00:27:49,536 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:27:49,536 INFO L276 IsEmpty]: Start isEmpty. Operand 1874 states and 2791 transitions. [2020-10-28 00:27:49,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-28 00:27:49,540 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:27:49,540 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] [2020-10-28 00:27:49,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 00:27:49,541 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:27:49,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:27:49,541 INFO L82 PathProgramCache]: Analyzing trace with hash -2133128142, now seen corresponding path program 1 times [2020-10-28 00:27:49,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:27:49,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [670147273] [2020-10-28 00:27:49,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:27:49,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:27:49,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:49,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:49,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:49,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:49,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:49,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:50,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:50,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:50,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:50,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:50,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:51,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:54,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:54,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:54,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:27:54,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-28 00:27:54,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 00:27:54,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 00:27:54,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:27:54,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:27:54,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 00:27:54,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-28 00:27:54,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:27:54,984 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 00:27:54,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:27:54,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:27:55,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:55,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:27:55,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:27:55,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:27:55,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 00:27:55,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:27:55,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:27:55,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:27:55,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:27:55,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 00:27:55,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:27:55,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [670147273] [2020-10-28 00:27:55,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:27:55,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:27:55,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82222108] [2020-10-28 00:27:55,071 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:27:55,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:27:55,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:27:55,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:27:55,075 INFO L87 Difference]: Start difference. First operand 1874 states and 2791 transitions. Second operand 4 states. [2020-10-28 00:27:57,556 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-28 00:27:58,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:27:58,629 INFO L93 Difference]: Finished difference Result 4957 states and 7378 transitions. [2020-10-28 00:27:58,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:27:58,629 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 162 [2020-10-28 00:27:58,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:27:58,647 INFO L225 Difference]: With dead ends: 4957 [2020-10-28 00:27:58,647 INFO L226 Difference]: Without dead ends: 3250 [2020-10-28 00:27:58,652 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:27:58,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3250 states. [2020-10-28 00:27:58,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3250 to 3247. [2020-10-28 00:27:58,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3247 states. [2020-10-28 00:27:58,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3247 states to 3247 states and 4770 transitions. [2020-10-28 00:27:58,840 INFO L78 Accepts]: Start accepts. Automaton has 3247 states and 4770 transitions. Word has length 162 [2020-10-28 00:27:58,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:27:58,841 INFO L481 AbstractCegarLoop]: Abstraction has 3247 states and 4770 transitions. [2020-10-28 00:27:58,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:27:58,841 INFO L276 IsEmpty]: Start isEmpty. Operand 3247 states and 4770 transitions. [2020-10-28 00:27:58,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-28 00:27:58,847 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:27:58,847 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] [2020-10-28 00:27:58,848 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 00:27:58,848 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:27:58,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:27:58,848 INFO L82 PathProgramCache]: Analyzing trace with hash 708372687, now seen corresponding path program 1 times [2020-10-28 00:27:58,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:27:58,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1299908301] [2020-10-28 00:27:58,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:27:58,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:27:58,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:59,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:59,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:59,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:59,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:59,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:59,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:59,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:59,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:59,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:59,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:27:59,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:00,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:01,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:01,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:01,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:02,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:03,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:28:03,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-28 00:28:03,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-28 00:28:03,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-28 00:28:03,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:28:03,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:28:03,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 00:28:03,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 00:28:03,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:28:04,366 WARN L193 SmtUtils]: Spent 342.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 00:28:04,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:28:04,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:28:04,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:04,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:28:04,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:28:04,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:28:04,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 00:28:04,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:28:04,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:28:04,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:28:04,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:28:04,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:28:04,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:28:04,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1299908301] [2020-10-28 00:28:04,440 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:28:04,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:28:04,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158392143] [2020-10-28 00:28:04,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:28:04,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:28:04,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:28:04,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:28:04,442 INFO L87 Difference]: Start difference. First operand 3247 states and 4770 transitions. Second operand 5 states. [2020-10-28 00:28:06,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:28:06,268 INFO L93 Difference]: Finished difference Result 5855 states and 8627 transitions. [2020-10-28 00:28:06,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:28:06,269 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 162 [2020-10-28 00:28:06,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:28:06,283 INFO L225 Difference]: With dead ends: 5855 [2020-10-28 00:28:06,283 INFO L226 Difference]: Without dead ends: 2765 [2020-10-28 00:28:06,290 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:28:06,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2765 states. [2020-10-28 00:28:06,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2765 to 2762. [2020-10-28 00:28:06,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2762 states. [2020-10-28 00:28:06,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2762 states to 2762 states and 4058 transitions. [2020-10-28 00:28:06,432 INFO L78 Accepts]: Start accepts. Automaton has 2762 states and 4058 transitions. Word has length 162 [2020-10-28 00:28:06,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:28:06,432 INFO L481 AbstractCegarLoop]: Abstraction has 2762 states and 4058 transitions. [2020-10-28 00:28:06,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:28:06,433 INFO L276 IsEmpty]: Start isEmpty. Operand 2762 states and 4058 transitions. [2020-10-28 00:28:06,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-28 00:28:06,438 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:28:06,439 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, 1, 1] [2020-10-28 00:28:06,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 00:28:06,439 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:28:06,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:28:06,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1777856235, now seen corresponding path program 1 times [2020-10-28 00:28:06,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:28:06,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [4668138] [2020-10-28 00:28:06,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:28:06,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:28:06,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:06,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:06,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:06,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:06,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:06,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:06,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:06,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:06,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:07,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:07,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:07,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:10,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:10,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:10,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:10,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:11,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:28:11,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-28 00:28:11,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-28 00:28:11,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 00:28:11,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:28:11,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:28:11,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-28 00:28:11,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 00:28:11,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:28:11,880 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 00:28:11,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:28:11,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:28:11,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:11,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:28:11,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:28:11,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:28:11,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 00:28:11,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:28:11,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:28:11,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:28:11,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:28:11,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:28:11,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:28:11,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [4668138] [2020-10-28 00:28:11,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:28:11,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:28:11,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350616873] [2020-10-28 00:28:11,942 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:28:11,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:28:11,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:28:11,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:28:11,943 INFO L87 Difference]: Start difference. First operand 2762 states and 4058 transitions. Second operand 4 states. [2020-10-28 00:28:14,545 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-28 00:28:14,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:28:14,692 INFO L93 Difference]: Finished difference Result 6892 states and 10298 transitions. [2020-10-28 00:28:14,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:28:14,693 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 164 [2020-10-28 00:28:14,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:28:14,715 INFO L225 Difference]: With dead ends: 6892 [2020-10-28 00:28:14,715 INFO L226 Difference]: Without dead ends: 4305 [2020-10-28 00:28:14,723 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:28:14,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4305 states. [2020-10-28 00:28:14,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4305 to 3650. [2020-10-28 00:28:14,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3650 states. [2020-10-28 00:28:14,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3650 states to 3650 states and 5493 transitions. [2020-10-28 00:28:14,927 INFO L78 Accepts]: Start accepts. Automaton has 3650 states and 5493 transitions. Word has length 164 [2020-10-28 00:28:14,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:28:14,927 INFO L481 AbstractCegarLoop]: Abstraction has 3650 states and 5493 transitions. [2020-10-28 00:28:14,927 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:28:14,927 INFO L276 IsEmpty]: Start isEmpty. Operand 3650 states and 5493 transitions. [2020-10-28 00:28:14,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-28 00:28:14,933 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:28:14,933 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, 1, 1, 1, 1] [2020-10-28 00:28:14,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 00:28:14,933 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:28:14,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:28:14,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1904039307, now seen corresponding path program 1 times [2020-10-28 00:28:14,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:28:14,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2085094628] [2020-10-28 00:28:14,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:28:14,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:28:14,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:15,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:15,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:15,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:15,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:15,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:15,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:15,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:15,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:15,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:15,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:19,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:28:19,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-28 00:28:19,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 00:28:19,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 00:28:19,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:28:19,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:28:19,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-28 00:28:19,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-28 00:28:19,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:28:20,392 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 00:28:20,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:28:20,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:28:20,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:20,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:28:20,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:28:20,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:28:20,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 00:28:20,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:28:20,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:28:20,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:28:20,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:28:20,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:28:20,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:28:20,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2085094628] [2020-10-28 00:28:20,451 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:28:20,451 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:28:20,451 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617463833] [2020-10-28 00:28:20,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:28:20,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:28:20,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:28:20,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:28:20,453 INFO L87 Difference]: Start difference. First operand 3650 states and 5493 transitions. Second operand 4 states. [2020-10-28 00:28:22,949 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-28 00:28:23,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:28:23,275 INFO L93 Difference]: Finished difference Result 9340 states and 14306 transitions. [2020-10-28 00:28:23,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:28:23,276 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 166 [2020-10-28 00:28:23,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:28:23,306 INFO L225 Difference]: With dead ends: 9340 [2020-10-28 00:28:23,306 INFO L226 Difference]: Without dead ends: 5905 [2020-10-28 00:28:23,316 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:28:23,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5905 states. [2020-10-28 00:28:23,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5905 to 5206. [2020-10-28 00:28:23,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5206 states. [2020-10-28 00:28:23,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5206 states to 5206 states and 8012 transitions. [2020-10-28 00:28:23,630 INFO L78 Accepts]: Start accepts. Automaton has 5206 states and 8012 transitions. Word has length 166 [2020-10-28 00:28:23,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:28:23,630 INFO L481 AbstractCegarLoop]: Abstraction has 5206 states and 8012 transitions. [2020-10-28 00:28:23,630 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:28:23,630 INFO L276 IsEmpty]: Start isEmpty. Operand 5206 states and 8012 transitions. [2020-10-28 00:28:23,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-28 00:28:23,636 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:28:23,636 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, 1, 1, 1, 1, 1] [2020-10-28 00:28:23,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 00:28:23,636 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:28:23,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:28:23,637 INFO L82 PathProgramCache]: Analyzing trace with hash 1503304523, now seen corresponding path program 1 times [2020-10-28 00:28:23,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:28:23,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1299099792] [2020-10-28 00:28:23,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:28:23,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:28:23,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:23,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:24,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:24,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:24,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:24,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:24,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:24,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:24,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:24,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:26,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:26,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:27,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:28,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:28,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:28,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:28:28,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-10-28 00:28:28,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-28 00:28:28,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 00:28:28,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:28:28,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:28:28,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 00:28:28,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-28 00:28:28,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:28:29,214 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 00:28:29,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:28:29,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:28:29,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:29,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:28:29,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:28:29,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:28:29,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 00:28:29,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:28:29,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:28:29,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:28:29,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:28:29,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:28:29,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:28:29,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1299099792] [2020-10-28 00:28:29,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:28:29,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:28:29,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085257553] [2020-10-28 00:28:29,266 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:28:29,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:28:29,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:28:29,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:28:29,267 INFO L87 Difference]: Start difference. First operand 5206 states and 8012 transitions. Second operand 5 states. [2020-10-28 00:28:31,509 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 00:28:32,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:28:32,708 INFO L93 Difference]: Finished difference Result 10405 states and 16010 transitions. [2020-10-28 00:28:32,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 00:28:32,709 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-10-28 00:28:32,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:28:32,731 INFO L225 Difference]: With dead ends: 10405 [2020-10-28 00:28:32,732 INFO L226 Difference]: Without dead ends: 5224 [2020-10-28 00:28:32,743 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 00:28:32,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5224 states. [2020-10-28 00:28:33,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5224 to 5206. [2020-10-28 00:28:33,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5206 states. [2020-10-28 00:28:33,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5206 states to 5206 states and 8008 transitions. [2020-10-28 00:28:33,109 INFO L78 Accepts]: Start accepts. Automaton has 5206 states and 8008 transitions. Word has length 167 [2020-10-28 00:28:33,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:28:33,109 INFO L481 AbstractCegarLoop]: Abstraction has 5206 states and 8008 transitions. [2020-10-28 00:28:33,109 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:28:33,109 INFO L276 IsEmpty]: Start isEmpty. Operand 5206 states and 8008 transitions. [2020-10-28 00:28:33,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-28 00:28:33,115 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:28:33,115 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, 1, 1, 1, 1, 1, 1] [2020-10-28 00:28:33,115 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 00:28:33,116 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:28:33,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:28:33,116 INFO L82 PathProgramCache]: Analyzing trace with hash 593029715, now seen corresponding path program 1 times [2020-10-28 00:28:33,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:28:33,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1056717738] [2020-10-28 00:28:33,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:28:33,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:28:33,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:33,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:33,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:33,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:33,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:33,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:33,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:33,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:33,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:33,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:35,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:35,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:36,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:37,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:37,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:37,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:37,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:38,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:38,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:28:38,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-28 00:28:38,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-28 00:28:38,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5070 [2020-10-28 00:28:38,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:28:38,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:28:38,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 00:28:38,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-28 00:28:38,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 00:28:38,622 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 00:28:38,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:28:38,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:28:38,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:38,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:28:38,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:28:38,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:28:38,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 00:28:38,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:28:38,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:28:38,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:28:38,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:28:38,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:28:38,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:28:38,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1056717738] [2020-10-28 00:28:38,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:28:38,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:28:38,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724610221] [2020-10-28 00:28:38,687 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:28:38,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:28:38,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:28:38,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:28:38,691 INFO L87 Difference]: Start difference. First operand 5206 states and 8008 transitions. Second operand 5 states. [2020-10-28 00:28:40,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:28:40,527 INFO L93 Difference]: Finished difference Result 8628 states and 13282 transitions. [2020-10-28 00:28:40,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:28:40,527 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 168 [2020-10-28 00:28:40,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:28:40,539 INFO L225 Difference]: With dead ends: 8628 [2020-10-28 00:28:40,539 INFO L226 Difference]: Without dead ends: 5206 [2020-10-28 00:28:40,545 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:28:40,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5206 states. [2020-10-28 00:28:40,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5206 to 5206. [2020-10-28 00:28:40,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5206 states. [2020-10-28 00:28:40,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5206 states to 5206 states and 8007 transitions. [2020-10-28 00:28:40,829 INFO L78 Accepts]: Start accepts. Automaton has 5206 states and 8007 transitions. Word has length 168 [2020-10-28 00:28:40,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:28:40,829 INFO L481 AbstractCegarLoop]: Abstraction has 5206 states and 8007 transitions. [2020-10-28 00:28:40,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:28:40,829 INFO L276 IsEmpty]: Start isEmpty. Operand 5206 states and 8007 transitions. [2020-10-28 00:28:40,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-28 00:28:40,836 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:28:40,836 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, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:28:40,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 00:28:40,836 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:28:40,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:28:40,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1267516103, now seen corresponding path program 1 times [2020-10-28 00:28:40,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:28:40,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1275347015] [2020-10-28 00:28:40,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:28:40,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:28:40,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:40,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:41,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:41,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:41,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:41,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:41,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:41,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:41,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:41,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:41,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:43,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:43,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:43,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:44,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:44,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:45,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:28:45,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-28 00:28:45,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-28 00:28:45,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 00:28:45,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:28:45,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:28:45,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 00:28:45,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-28 00:28:45,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:28:46,286 WARN L193 SmtUtils]: Spent 337.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 00:28:46,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:28:46,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:28:46,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:46,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:28:46,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:28:46,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:28:46,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 00:28:46,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:28:46,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:28:46,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:28:46,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:28:46,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:28:46,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:28:46,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1275347015] [2020-10-28 00:28:46,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:28:46,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:28:46,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149996627] [2020-10-28 00:28:46,363 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:28:46,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:28:46,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:28:46,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:28:46,364 INFO L87 Difference]: Start difference. First operand 5206 states and 8007 transitions. Second operand 5 states. [2020-10-28 00:28:48,561 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 00:28:49,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:28:49,870 INFO L93 Difference]: Finished difference Result 15183 states and 23320 transitions. [2020-10-28 00:28:49,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 00:28:49,871 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 169 [2020-10-28 00:28:49,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:28:49,895 INFO L225 Difference]: With dead ends: 15183 [2020-10-28 00:28:49,896 INFO L226 Difference]: Without dead ends: 10020 [2020-10-28 00:28:49,908 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 00:28:49,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10020 states. [2020-10-28 00:28:50,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10020 to 10017. [2020-10-28 00:28:50,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10017 states. [2020-10-28 00:28:50,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10017 states to 10017 states and 15265 transitions. [2020-10-28 00:28:50,553 INFO L78 Accepts]: Start accepts. Automaton has 10017 states and 15265 transitions. Word has length 169 [2020-10-28 00:28:50,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:28:50,553 INFO L481 AbstractCegarLoop]: Abstraction has 10017 states and 15265 transitions. [2020-10-28 00:28:50,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:28:50,554 INFO L276 IsEmpty]: Start isEmpty. Operand 10017 states and 15265 transitions. [2020-10-28 00:28:50,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-28 00:28:50,563 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:28:50,564 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:28:50,564 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 00:28:50,564 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:28:50,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:28:50,565 INFO L82 PathProgramCache]: Analyzing trace with hash 432213406, now seen corresponding path program 1 times [2020-10-28 00:28:50,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:28:50,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1795407818] [2020-10-28 00:28:50,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:28:50,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:28:50,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:50,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:50,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:50,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:50,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:50,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:50,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:50,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:51,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:51,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:52,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:52,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:52,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:55,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:28:55,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-28 00:28:55,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 00:28:55,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 00:28:55,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:28:55,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:28:55,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-28 00:28:55,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 00:28:55,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:28:55,982 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 00:28:55,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:28:55,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:28:55,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:28:56,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:28:56,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:28:56,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:28:56,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 00:28:56,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:28:56,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:28:56,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:28:56,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:28:56,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:28:56,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:28:56,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1795407818] [2020-10-28 00:28:56,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:28:56,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:28:56,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652361312] [2020-10-28 00:28:56,042 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:28:56,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:28:56,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:28:56,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:28:56,049 INFO L87 Difference]: Start difference. First operand 10017 states and 15265 transitions. Second operand 4 states. [2020-10-28 00:28:59,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:28:59,069 INFO L93 Difference]: Finished difference Result 29726 states and 45384 transitions. [2020-10-28 00:28:59,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 00:28:59,070 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 170 [2020-10-28 00:28:59,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:28:59,119 INFO L225 Difference]: With dead ends: 29726 [2020-10-28 00:28:59,120 INFO L226 Difference]: Without dead ends: 19966 [2020-10-28 00:28:59,144 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:28:59,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19966 states. [2020-10-28 00:28:59,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19966 to 10023. [2020-10-28 00:28:59,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10023 states. [2020-10-28 00:29:00,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10023 states to 10023 states and 15271 transitions. [2020-10-28 00:29:00,006 INFO L78 Accepts]: Start accepts. Automaton has 10023 states and 15271 transitions. Word has length 170 [2020-10-28 00:29:00,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:29:00,007 INFO L481 AbstractCegarLoop]: Abstraction has 10023 states and 15271 transitions. [2020-10-28 00:29:00,007 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:29:00,007 INFO L276 IsEmpty]: Start isEmpty. Operand 10023 states and 15271 transitions. [2020-10-28 00:29:00,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-28 00:29:00,015 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:29:00,016 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:29:00,016 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 00:29:00,016 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:29:00,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:29:00,017 INFO L82 PathProgramCache]: Analyzing trace with hash -1572612872, now seen corresponding path program 1 times [2020-10-28 00:29:00,017 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:29:00,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [178701336] [2020-10-28 00:29:00,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:29:00,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:29:00,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:00,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:00,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:00,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:00,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:00,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:00,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:00,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:00,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:00,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:02,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:05,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:05,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:29:05,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-28 00:29:05,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 00:29:05,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-28 00:29:05,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:29:05,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:29:05,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-28 00:29:05,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 00:29:05,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:29:05,488 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 00:29:05,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:29:05,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:29:05,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:05,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:29:05,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:29:05,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:29:05,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 00:29:05,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:29:05,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:29:05,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:29:05,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:29:05,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:29:05,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:29:05,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [178701336] [2020-10-28 00:29:05,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:29:05,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:29:05,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139131535] [2020-10-28 00:29:05,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:29:05,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:29:05,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:29:05,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:29:05,552 INFO L87 Difference]: Start difference. First operand 10023 states and 15271 transitions. Second operand 5 states. [2020-10-28 00:29:07,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:29:07,512 INFO L93 Difference]: Finished difference Result 19968 states and 30433 transitions. [2020-10-28 00:29:07,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:29:07,512 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 171 [2020-10-28 00:29:07,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:29:07,532 INFO L225 Difference]: With dead ends: 19968 [2020-10-28 00:29:07,533 INFO L226 Difference]: Without dead ends: 10023 [2020-10-28 00:29:07,553 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:29:07,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10023 states. [2020-10-28 00:29:08,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10023 to 10020. [2020-10-28 00:29:08,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10020 states. [2020-10-28 00:29:08,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10020 states to 10020 states and 15262 transitions. [2020-10-28 00:29:08,244 INFO L78 Accepts]: Start accepts. Automaton has 10020 states and 15262 transitions. Word has length 171 [2020-10-28 00:29:08,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:29:08,244 INFO L481 AbstractCegarLoop]: Abstraction has 10020 states and 15262 transitions. [2020-10-28 00:29:08,244 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:29:08,244 INFO L276 IsEmpty]: Start isEmpty. Operand 10020 states and 15262 transitions. [2020-10-28 00:29:08,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-28 00:29:08,252 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:29:08,252 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:29:08,252 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 00:29:08,253 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:29:08,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:29:08,253 INFO L82 PathProgramCache]: Analyzing trace with hash -1932191244, now seen corresponding path program 1 times [2020-10-28 00:29:08,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:29:08,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [175057982] [2020-10-28 00:29:08,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:29:08,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:29:08,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:08,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:08,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:08,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:08,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:08,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:08,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:08,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:08,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:08,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:08,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:09,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:10,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:12,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:12,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:12,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:13,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:29:13,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-28 00:29:13,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-28 00:29:13,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-28 00:29:13,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:29:13,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:29:13,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-28 00:29:13,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-28 00:29:13,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:29:13,689 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 00:29:13,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:29:13,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:29:13,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:13,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:29:13,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:29:13,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:29:13,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 00:29:13,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:29:13,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:29:13,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:29:13,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:29:13,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:29:13,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:29:13,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [175057982] [2020-10-28 00:29:13,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:29:13,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:29:13,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648048596] [2020-10-28 00:29:13,750 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:29:13,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:29:13,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:29:13,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:29:13,751 INFO L87 Difference]: Start difference. First operand 10020 states and 15262 transitions. Second operand 4 states. [2020-10-28 00:29:16,220 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-28 00:29:17,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:29:17,778 INFO L93 Difference]: Finished difference Result 28090 states and 42801 transitions. [2020-10-28 00:29:17,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:29:17,779 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 171 [2020-10-28 00:29:17,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:29:17,811 INFO L225 Difference]: With dead ends: 28090 [2020-10-28 00:29:17,812 INFO L226 Difference]: Without dead ends: 18465 [2020-10-28 00:29:17,833 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:29:17,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18465 states. [2020-10-28 00:29:18,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18465 to 18462. [2020-10-28 00:29:18,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18462 states. [2020-10-28 00:29:18,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18462 states to 18462 states and 27799 transitions. [2020-10-28 00:29:18,984 INFO L78 Accepts]: Start accepts. Automaton has 18462 states and 27799 transitions. Word has length 171 [2020-10-28 00:29:18,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:29:18,984 INFO L481 AbstractCegarLoop]: Abstraction has 18462 states and 27799 transitions. [2020-10-28 00:29:18,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:29:18,985 INFO L276 IsEmpty]: Start isEmpty. Operand 18462 states and 27799 transitions. [2020-10-28 00:29:18,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-28 00:29:18,999 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:29:18,999 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:29:18,999 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 00:29:19,000 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:29:19,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:29:19,000 INFO L82 PathProgramCache]: Analyzing trace with hash 254988535, now seen corresponding path program 1 times [2020-10-28 00:29:19,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:29:19,000 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1603720310] [2020-10-28 00:29:19,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:29:19,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:29:19,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:19,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:19,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:19,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:19,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:19,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:19,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:19,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:19,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:19,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:19,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:19,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:19,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:19,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:21,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:22,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:23,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:23,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:24,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:29:24,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-28 00:29:24,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-28 00:29:24,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 00:29:24,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:29:24,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:29:24,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-28 00:29:24,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 00:29:24,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:29:24,476 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 00:29:24,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:29:24,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:29:24,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:24,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:29:24,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:29:24,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:29:24,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 00:29:24,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:29:24,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:29:24,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:29:24,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:29:24,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:29:24,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:29:24,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1603720310] [2020-10-28 00:29:24,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:29:24,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:29:24,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718462566] [2020-10-28 00:29:24,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:29:24,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:29:24,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:29:24,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:29:24,582 INFO L87 Difference]: Start difference. First operand 18462 states and 27799 transitions. Second operand 5 states. [2020-10-28 00:29:26,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:29:26,753 INFO L93 Difference]: Finished difference Result 32493 states and 49018 transitions. [2020-10-28 00:29:26,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:29:26,754 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 171 [2020-10-28 00:29:26,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:29:26,776 INFO L225 Difference]: With dead ends: 32493 [2020-10-28 00:29:26,777 INFO L226 Difference]: Without dead ends: 14390 [2020-10-28 00:29:26,803 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:29:26,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14390 states. [2020-10-28 00:29:27,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14390 to 14390. [2020-10-28 00:29:27,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14390 states. [2020-10-28 00:29:27,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14390 states to 14390 states and 21625 transitions. [2020-10-28 00:29:27,710 INFO L78 Accepts]: Start accepts. Automaton has 14390 states and 21625 transitions. Word has length 171 [2020-10-28 00:29:27,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:29:27,710 INFO L481 AbstractCegarLoop]: Abstraction has 14390 states and 21625 transitions. [2020-10-28 00:29:27,710 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:29:27,710 INFO L276 IsEmpty]: Start isEmpty. Operand 14390 states and 21625 transitions. [2020-10-28 00:29:27,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-28 00:29:27,719 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:29:27,720 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:29:27,720 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 00:29:27,720 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:29:27,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:29:27,721 INFO L82 PathProgramCache]: Analyzing trace with hash 1881505391, now seen corresponding path program 1 times [2020-10-28 00:29:27,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:29:27,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [316185258] [2020-10-28 00:29:27,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:29:27,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:29:27,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:27,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:27,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:27,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:27,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:28,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:28,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:28,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:28,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:28,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:28,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:28,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:32,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:32,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:32,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:29:32,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-28 00:29:32,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 00:29:32,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 00:29:32,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:29:32,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:29:32,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-28 00:29:32,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 00:29:32,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:29:33,199 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 00:29:33,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:29:33,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:29:33,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:33,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:29:33,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:29:33,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:29:33,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 00:29:33,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:29:33,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:29:33,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:29:33,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:29:33,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:29:33,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:29:33,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [316185258] [2020-10-28 00:29:33,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:29:33,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:29:33,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019715676] [2020-10-28 00:29:33,245 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:29:33,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:29:33,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:29:33,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:29:33,246 INFO L87 Difference]: Start difference. First operand 14390 states and 21625 transitions. Second operand 4 states. [2020-10-28 00:29:36,077 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 210 [2020-10-28 00:29:37,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:29:37,151 INFO L93 Difference]: Finished difference Result 37704 states and 57535 transitions. [2020-10-28 00:29:37,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:29:37,151 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 173 [2020-10-28 00:29:37,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:29:37,180 INFO L225 Difference]: With dead ends: 37704 [2020-10-28 00:29:37,181 INFO L226 Difference]: Without dead ends: 23977 [2020-10-28 00:29:37,200 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:29:37,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23977 states. [2020-10-28 00:29:38,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23977 to 21754. [2020-10-28 00:29:38,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21754 states. [2020-10-28 00:29:38,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21754 states to 21754 states and 33462 transitions. [2020-10-28 00:29:38,346 INFO L78 Accepts]: Start accepts. Automaton has 21754 states and 33462 transitions. Word has length 173 [2020-10-28 00:29:38,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:29:38,347 INFO L481 AbstractCegarLoop]: Abstraction has 21754 states and 33462 transitions. [2020-10-28 00:29:38,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:29:38,347 INFO L276 IsEmpty]: Start isEmpty. Operand 21754 states and 33462 transitions. [2020-10-28 00:29:38,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-28 00:29:38,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:29:38,354 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:29:38,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 00:29:38,354 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:29:38,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:29:38,355 INFO L82 PathProgramCache]: Analyzing trace with hash -1921068813, now seen corresponding path program 1 times [2020-10-28 00:29:38,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:29:38,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [733096887] [2020-10-28 00:29:38,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:29:38,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:29:38,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:38,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:38,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:38,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:38,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:38,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:38,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:38,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:39,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:39,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:41,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:42,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:42,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:43,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:43,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:29:43,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-28 00:29:43,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 00:29:43,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 00:29:43,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:29:43,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:29:43,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-28 00:29:43,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 00:29:43,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:29:43,823 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 00:29:43,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:29:43,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:29:43,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:43,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:29:43,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:29:43,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:29:43,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 00:29:43,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:29:43,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:29:43,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:29:43,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:29:43,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:29:43,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:29:43,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [733096887] [2020-10-28 00:29:43,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:29:43,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:29:43,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132305903] [2020-10-28 00:29:43,869 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:29:43,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:29:43,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:29:43,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:29:43,870 INFO L87 Difference]: Start difference. First operand 21754 states and 33462 transitions. Second operand 5 states. [2020-10-28 00:29:48,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:29:48,250 INFO L93 Difference]: Finished difference Result 57128 states and 89934 transitions. [2020-10-28 00:29:48,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:29:48,251 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 176 [2020-10-28 00:29:48,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:29:48,307 INFO L225 Difference]: With dead ends: 57128 [2020-10-28 00:29:48,307 INFO L226 Difference]: Without dead ends: 39071 [2020-10-28 00:29:48,330 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:29:48,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39071 states. [2020-10-28 00:29:49,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39071 to 21730. [2020-10-28 00:29:49,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21730 states. [2020-10-28 00:29:49,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21730 states to 21730 states and 33396 transitions. [2020-10-28 00:29:49,775 INFO L78 Accepts]: Start accepts. Automaton has 21730 states and 33396 transitions. Word has length 176 [2020-10-28 00:29:49,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:29:49,775 INFO L481 AbstractCegarLoop]: Abstraction has 21730 states and 33396 transitions. [2020-10-28 00:29:49,775 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:29:49,775 INFO L276 IsEmpty]: Start isEmpty. Operand 21730 states and 33396 transitions. [2020-10-28 00:29:49,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-28 00:29:49,782 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:29:49,782 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:29:49,782 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 00:29:49,782 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:29:49,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:29:49,783 INFO L82 PathProgramCache]: Analyzing trace with hash 1345339051, now seen corresponding path program 1 times [2020-10-28 00:29:49,783 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:29:49,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [912520840] [2020-10-28 00:29:49,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:29:49,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:29:49,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:49,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:49,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:49,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:49,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:50,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:50,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:50,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:50,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:50,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:51,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:51,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:51,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:51,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:52,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:54,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:29:54,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-28 00:29:54,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-28 00:29:54,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 00:29:54,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:29:54,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:29:54,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-28 00:29:54,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-28 00:29:54,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:29:55,300 WARN L193 SmtUtils]: Spent 350.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 00:29:55,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:29:55,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:29:55,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:29:55,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:29:55,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:29:55,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:29:55,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 00:29:55,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:29:55,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:29:55,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:29:55,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:29:55,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:29:55,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:29:55,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [912520840] [2020-10-28 00:29:55,374 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:29:55,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:29:55,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593366941] [2020-10-28 00:29:55,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:29:55,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:29:55,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:29:55,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:29:55,380 INFO L87 Difference]: Start difference. First operand 21730 states and 33396 transitions. Second operand 5 states. [2020-10-28 00:29:55,780 WARN L193 SmtUtils]: Spent 356.00 ms on a formula simplification that was a NOOP. DAG size: 206 [2020-10-28 00:29:58,271 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification that was a NOOP. DAG size: 207 [2020-10-28 00:30:02,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:30:02,305 INFO L93 Difference]: Finished difference Result 78496 states and 122905 transitions. [2020-10-28 00:30:02,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 00:30:02,306 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 176 [2020-10-28 00:30:02,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:30:02,401 INFO L225 Difference]: With dead ends: 78496 [2020-10-28 00:30:02,401 INFO L226 Difference]: Without dead ends: 60529 [2020-10-28 00:30:02,428 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 00:30:02,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60529 states. [2020-10-28 00:30:06,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60529 to 60523. [2020-10-28 00:30:06,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60523 states. [2020-10-28 00:30:06,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60523 states to 60523 states and 93911 transitions. [2020-10-28 00:30:06,600 INFO L78 Accepts]: Start accepts. Automaton has 60523 states and 93911 transitions. Word has length 176 [2020-10-28 00:30:06,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:30:06,600 INFO L481 AbstractCegarLoop]: Abstraction has 60523 states and 93911 transitions. [2020-10-28 00:30:06,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:30:06,601 INFO L276 IsEmpty]: Start isEmpty. Operand 60523 states and 93911 transitions. [2020-10-28 00:30:06,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-28 00:30:06,614 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:30:06,614 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:30:06,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 00:30:06,614 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:30:06,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:30:06,615 INFO L82 PathProgramCache]: Analyzing trace with hash 2013224380, now seen corresponding path program 1 times [2020-10-28 00:30:06,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:30:06,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [958769343] [2020-10-28 00:30:06,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:30:06,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:30:06,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:06,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:06,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:06,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:06,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:06,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:06,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:07,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:07,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:07,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:07,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:08,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:08,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:09,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:09,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:09,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:09,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:10,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:11,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:30:11,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-28 00:30:11,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-28 00:30:11,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 00:30:11,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:30:11,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:30:11,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 00:30:11,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 00:30:11,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:30:12,168 WARN L193 SmtUtils]: Spent 439.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 00:30:12,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:30:12,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:30:12,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:12,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:30:12,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:30:12,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:30:12,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 00:30:12,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:30:12,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:30:12,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:30:12,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:30:12,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:30:12,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:30:12,234 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [958769343] [2020-10-28 00:30:12,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:30:12,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:30:12,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158177450] [2020-10-28 00:30:12,235 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:30:12,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:30:12,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:30:12,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:30:12,236 INFO L87 Difference]: Start difference. First operand 60523 states and 93911 transitions. Second operand 5 states. [2020-10-28 00:30:15,427 WARN L193 SmtUtils]: Spent 391.00 ms on a formula simplification that was a NOOP. DAG size: 211 [2020-10-28 00:30:21,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:30:21,992 INFO L93 Difference]: Finished difference Result 158040 states and 245201 transitions. [2020-10-28 00:30:21,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 00:30:21,993 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 176 [2020-10-28 00:30:21,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:30:22,160 INFO L225 Difference]: With dead ends: 158040 [2020-10-28 00:30:22,160 INFO L226 Difference]: Without dead ends: 97952 [2020-10-28 00:30:22,215 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 00:30:22,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97952 states. [2020-10-28 00:30:29,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97952 to 97940. [2020-10-28 00:30:29,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97940 states. [2020-10-28 00:30:29,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97940 states to 97940 states and 150326 transitions. [2020-10-28 00:30:29,383 INFO L78 Accepts]: Start accepts. Automaton has 97940 states and 150326 transitions. Word has length 176 [2020-10-28 00:30:29,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:30:29,383 INFO L481 AbstractCegarLoop]: Abstraction has 97940 states and 150326 transitions. [2020-10-28 00:30:29,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:30:29,383 INFO L276 IsEmpty]: Start isEmpty. Operand 97940 states and 150326 transitions. [2020-10-28 00:30:29,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-10-28 00:30:29,405 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:30:29,406 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:30:29,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 00:30:29,406 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:30:29,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:30:29,406 INFO L82 PathProgramCache]: Analyzing trace with hash -241457740, now seen corresponding path program 1 times [2020-10-28 00:30:29,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:30:29,407 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [145842035] [2020-10-28 00:30:29,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:30:29,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:30:29,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:29,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:29,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:29,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:29,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:29,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:29,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:29,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:30,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:30,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:31,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:33,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:33,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:34,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:34,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:34,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:30:34,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-10-28 00:30:34,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-28 00:30:34,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 00:30:34,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:30:34,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:30:34,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-10-28 00:30:34,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 00:30:34,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:30:34,876 WARN L193 SmtUtils]: Spent 354.00 ms on a formula simplification that was a NOOP. DAG size: 205 [2020-10-28 00:30:34,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:30:34,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:30:34,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:30:34,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:30:34,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:30:34,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:30:34,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 00:30:34,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:30:34,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:30:34,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:30:34,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:30:34,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:30:34,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:30:34,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [145842035] [2020-10-28 00:30:34,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:30:34,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:30:34,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337559813] [2020-10-28 00:30:34,933 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:30:34,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:30:34,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:30:34,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:30:34,934 INFO L87 Difference]: Start difference. First operand 97940 states and 150326 transitions. Second operand 5 states.