/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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_lcr.6.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 13:29:29,578 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 13:29:29,581 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 13:29:29,620 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 13:29:29,620 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 13:29:29,622 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 13:29:29,624 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 13:29:29,627 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 13:29:29,629 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 13:29:29,631 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 13:29:29,632 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 13:29:29,634 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 13:29:29,634 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 13:29:29,636 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 13:29:29,637 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 13:29:29,639 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 13:29:29,640 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 13:29:29,641 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 13:29:29,658 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 13:29:29,660 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 13:29:29,663 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 13:29:29,664 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 13:29:29,666 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 13:29:29,667 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 13:29:29,671 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 13:29:29,672 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 13:29:29,676 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 13:29:29,677 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 13:29:29,678 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 13:29:29,680 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 13:29:29,681 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 13:29:29,682 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 13:29:29,683 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 13:29:29,684 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 13:29:29,687 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 13:29:29,688 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 13:29:29,689 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 13:29:29,690 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 13:29:29,690 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 13:29:29,691 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 13:29:29,692 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 13:29:29,693 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 [2020-10-29 13:29:29,757 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 13:29:29,757 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 13:29:29,760 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 13:29:29,760 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 13:29:29,762 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 13:29:29,762 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 13:29:29,762 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 13:29:29,762 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 13:29:29,763 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 13:29:29,763 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 13:29:29,764 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 13:29:29,765 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 13:29:29,765 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 13:29:29,765 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 13:29:29,765 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 13:29:29,766 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 13:29:29,766 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 13:29:29,766 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 13:29:29,767 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 13:29:29,767 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 13:29:29,767 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 13:29:29,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 13:29:29,768 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 13:29:29,768 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 13:29:29,768 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 13:29:29,768 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 13:29:29,769 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 13:29:29,769 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 13:29:29,769 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 13:29:29,769 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 13:29:30,292 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 13:29:30,338 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 13:29:30,342 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 13:29:30,344 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 13:29:30,345 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 13:29:30,346 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-29 13:29:30,425 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7e28dcc39/076060f319124c858303d05b5a21f291/FLAG531dabd8e [2020-10-29 13:29:31,154 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 13:29:31,155 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.6.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-29 13:29:31,178 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7e28dcc39/076060f319124c858303d05b5a21f291/FLAG531dabd8e [2020-10-29 13:29:31,434 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7e28dcc39/076060f319124c858303d05b5a21f291 [2020-10-29 13:29:31,438 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 13:29:31,444 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 13:29:31,445 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 13:29:31,446 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 13:29:31,450 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 13:29:31,451 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:29:31" (1/1) ... [2020-10-29 13:29:31,454 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d45bc66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:29:31, skipping insertion in model container [2020-10-29 13:29:31,454 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 01:29:31" (1/1) ... [2020-10-29 13:29:31,463 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 13:29:31,512 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 13:29:31,878 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:29:31,896 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 13:29:32,008 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 13:29:32,055 INFO L208 MainTranslator]: Completed translation [2020-10-29 13:29:32,057 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:29:32 WrapperNode [2020-10-29 13:29:32,057 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 13:29:32,060 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 13:29:32,060 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 13:29:32,060 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 13:29:32,075 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:29:32" (1/1) ... [2020-10-29 13:29:32,075 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:29:32" (1/1) ... [2020-10-29 13:29:32,091 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:29:32" (1/1) ... [2020-10-29 13:29:32,091 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:29:32" (1/1) ... [2020-10-29 13:29:32,143 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:29:32" (1/1) ... [2020-10-29 13:29:32,156 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:29:32" (1/1) ... [2020-10-29 13:29:32,160 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:29:32" (1/1) ... [2020-10-29 13:29:32,167 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 13:29:32,168 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 13:29:32,168 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 13:29:32,168 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 13:29:32,170 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:29:32" (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 [2020-10-29 13:29:32,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 13:29:32,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 13:29:32,268 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 13:29:32,268 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 13:29:32,268 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 13:29:32,268 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 13:29:32,268 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 13:29:32,269 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 13:29:32,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 13:29:32,269 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-29 13:29:32,269 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-29 13:29:32,269 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-29 13:29:32,269 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-29 13:29:32,270 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 13:29:32,270 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-29 13:29:32,270 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-29 13:29:32,270 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-29 13:29:32,270 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-29 13:29:32,270 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-29 13:29:32,271 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-29 13:29:32,271 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-29 13:29:32,271 INFO L130 BoogieDeclarations]: Found specification of procedure node6 [2020-10-29 13:29:32,271 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-29 13:29:32,271 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-29 13:29:32,271 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 13:29:32,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 13:29:32,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 13:29:32,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 13:29:32,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 13:29:32,272 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 13:29:32,272 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 13:29:33,437 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 13:29:33,438 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-29 13:29:33,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:29:33 BoogieIcfgContainer [2020-10-29 13:29:33,444 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 13:29:33,446 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 13:29:33,446 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 13:29:33,450 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 13:29:33,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 01:29:31" (1/3) ... [2020-10-29 13:29:33,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1da56cba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:29:33, skipping insertion in model container [2020-10-29 13:29:33,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 01:29:32" (2/3) ... [2020-10-29 13:29:33,452 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1da56cba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 01:29:33, skipping insertion in model container [2020-10-29 13:29:33,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 01:29:33" (3/3) ... [2020-10-29 13:29:33,455 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.6.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-29 13:29:33,470 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 13:29:33,476 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 13:29:33,494 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 13:29:33,527 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 13:29:33,527 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 13:29:33,528 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 13:29:33,528 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 13:29:33,528 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 13:29:33,528 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 13:29:33,528 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 13:29:33,528 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 13:29:33,574 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states. [2020-10-29 13:29:33,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-29 13:29:33,591 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:29:33,592 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:29:33,592 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:29:33,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:29:33,599 INFO L82 PathProgramCache]: Analyzing trace with hash -1904996340, now seen corresponding path program 1 times [2020-10-29 13:29:33,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:29:33,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [932199101] [2020-10-29 13:29:33,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:29:34,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:29:34,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:34,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:34,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:34,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:34,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:34,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:35,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:36,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:36,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:36,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:36,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:36,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:38,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:38,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:38,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:38,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:39,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:39,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:29:39,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-29 13:29:39,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-29 13:29:39,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5077 [2020-10-29 13:29:39,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:29:39,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:29:39,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:29:39,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:29:39,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 13:29:39,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-29 13:29:39,629 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 13:29:39,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:29:39,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:29:39,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:39,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:29:39,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:29:39,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:29:39,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-29 13:29:39,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:29:39,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:29:39,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:29:39,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:29:39,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:29:39,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:29:39,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:29:39,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [932199101] [2020-10-29 13:29:39,825 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:29:39,825 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:29:39,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314355855] [2020-10-29 13:29:39,838 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:29:39,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:29:39,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:29:39,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:29:39,861 INFO L87 Difference]: Start difference. First operand 186 states. Second operand 6 states. [2020-10-29 13:29:40,289 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:29:41,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:29:41,571 INFO L93 Difference]: Finished difference Result 311 states and 516 transitions. [2020-10-29 13:29:41,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 13:29:41,575 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 95 [2020-10-29 13:29:41,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:29:41,607 INFO L225 Difference]: With dead ends: 311 [2020-10-29 13:29:41,608 INFO L226 Difference]: Without dead ends: 179 [2020-10-29 13:29:41,626 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:29:41,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-10-29 13:29:41,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2020-10-29 13:29:41,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-10-29 13:29:41,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 243 transitions. [2020-10-29 13:29:41,693 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 243 transitions. Word has length 95 [2020-10-29 13:29:41,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:29:41,693 INFO L481 AbstractCegarLoop]: Abstraction has 179 states and 243 transitions. [2020-10-29 13:29:41,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:29:41,694 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 243 transitions. [2020-10-29 13:29:41,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-29 13:29:41,698 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:29:41,698 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:29:41,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 13:29:41,699 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:29:41,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:29:41,700 INFO L82 PathProgramCache]: Analyzing trace with hash 339852393, now seen corresponding path program 1 times [2020-10-29 13:29:41,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:29:41,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [266240671] [2020-10-29 13:29:41,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:29:41,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:29:41,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:41,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:41,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:41,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:42,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:42,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:42,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:42,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:46,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:29:46,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-29 13:29:46,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 13:29:46,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 13:29:46,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:29:46,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:29:46,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:29:46,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:29:46,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-29 13:29:46,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:29:47,131 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 13:29:47,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:29:47,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:29:47,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:47,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:29:47,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:29:47,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:29:47,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 13:29:47,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:29:47,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:29:47,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:29:47,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:29:47,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:29:47,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:29:47,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:29:47,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [266240671] [2020-10-29 13:29:47,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:29:47,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:29:47,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039325682] [2020-10-29 13:29:47,247 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:29:47,248 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:29:47,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:29:47,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:29:47,250 INFO L87 Difference]: Start difference. First operand 179 states and 243 transitions. Second operand 6 states. [2020-10-29 13:29:47,657 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:29:48,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:29:48,606 INFO L93 Difference]: Finished difference Result 304 states and 430 transitions. [2020-10-29 13:29:48,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 13:29:48,607 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 96 [2020-10-29 13:29:48,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:29:48,611 INFO L225 Difference]: With dead ends: 304 [2020-10-29 13:29:48,611 INFO L226 Difference]: Without dead ends: 179 [2020-10-29 13:29:48,613 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:29:48,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-10-29 13:29:48,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2020-10-29 13:29:48,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-10-29 13:29:48,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 241 transitions. [2020-10-29 13:29:48,635 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 241 transitions. Word has length 96 [2020-10-29 13:29:48,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:29:48,635 INFO L481 AbstractCegarLoop]: Abstraction has 179 states and 241 transitions. [2020-10-29 13:29:48,635 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:29:48,636 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 241 transitions. [2020-10-29 13:29:48,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-29 13:29:48,637 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:29:48,638 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] [2020-10-29 13:29:48,638 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 13:29:48,638 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:29:48,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:29:48,639 INFO L82 PathProgramCache]: Analyzing trace with hash 1650243229, now seen corresponding path program 1 times [2020-10-29 13:29:48,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:29:48,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [635819886] [2020-10-29 13:29:48,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:29:48,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:29:48,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:48,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:48,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:48,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:49,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:49,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:49,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:49,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:53,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:29:53,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-29 13:29:53,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 13:29:53,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-29 13:29:53,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:29:53,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:29:53,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:29:53,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:29:53,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 13:29:53,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:29:54,069 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 13:29:54,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:29:54,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:29:54,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:54,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:29:54,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:29:54,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:29:54,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 13:29:54,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:29:54,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:29:54,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:29:54,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:29:54,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:29:54,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:29:54,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:29:54,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [635819886] [2020-10-29 13:29:54,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:29:54,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:29:54,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113691573] [2020-10-29 13:29:54,151 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:29:54,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:29:54,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:29:54,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:29:54,152 INFO L87 Difference]: Start difference. First operand 179 states and 241 transitions. Second operand 6 states. [2020-10-29 13:29:54,519 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:29:55,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:29:55,411 INFO L93 Difference]: Finished difference Result 308 states and 431 transitions. [2020-10-29 13:29:55,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 13:29:55,412 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 97 [2020-10-29 13:29:55,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:29:55,419 INFO L225 Difference]: With dead ends: 308 [2020-10-29 13:29:55,420 INFO L226 Difference]: Without dead ends: 179 [2020-10-29 13:29:55,421 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:29:55,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-10-29 13:29:55,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2020-10-29 13:29:55,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-10-29 13:29:55,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 239 transitions. [2020-10-29 13:29:55,467 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 239 transitions. Word has length 97 [2020-10-29 13:29:55,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:29:55,468 INFO L481 AbstractCegarLoop]: Abstraction has 179 states and 239 transitions. [2020-10-29 13:29:55,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:29:55,468 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 239 transitions. [2020-10-29 13:29:55,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-29 13:29:55,470 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:29:55,470 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] [2020-10-29 13:29:55,470 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 13:29:55,470 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:29:55,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:29:55,471 INFO L82 PathProgramCache]: Analyzing trace with hash 471776250, now seen corresponding path program 1 times [2020-10-29 13:29:55,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:29:55,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2059005477] [2020-10-29 13:29:55,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:29:55,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:29:55,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:55,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:55,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:55,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:56,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:56,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:56,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:56,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:57,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:57,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:59,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:29:59,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:00,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:30:00,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-29 13:30:00,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 13:30:00,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-29 13:30:00,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:30:00,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:30:00,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:30:00,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:30:00,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-29 13:30:00,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 13:30:00,974 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 13:30:00,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:30:00,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:30:01,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:01,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:30:01,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:30:01,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:30:01,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 13:30:01,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:30:01,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:30:01,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:30:01,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:30:01,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:30:01,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:30:01,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:30:01,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2059005477] [2020-10-29 13:30:01,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:30:01,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:30:01,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709949187] [2020-10-29 13:30:01,071 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:30:01,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:30:01,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:30:01,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:30:01,072 INFO L87 Difference]: Start difference. First operand 179 states and 239 transitions. Second operand 6 states. [2020-10-29 13:30:01,435 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-29 13:30:02,286 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:30:02,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:30:02,736 INFO L93 Difference]: Finished difference Result 360 states and 515 transitions. [2020-10-29 13:30:02,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:30:02,737 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 98 [2020-10-29 13:30:02,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:30:02,739 INFO L225 Difference]: With dead ends: 360 [2020-10-29 13:30:02,740 INFO L226 Difference]: Without dead ends: 251 [2020-10-29 13:30:02,743 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-29 13:30:02,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-10-29 13:30:02,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 248. [2020-10-29 13:30:02,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2020-10-29 13:30:02,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 345 transitions. [2020-10-29 13:30:02,806 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 345 transitions. Word has length 98 [2020-10-29 13:30:02,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:30:02,809 INFO L481 AbstractCegarLoop]: Abstraction has 248 states and 345 transitions. [2020-10-29 13:30:02,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:30:02,810 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 345 transitions. [2020-10-29 13:30:02,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-29 13:30:02,816 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:30:02,817 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] [2020-10-29 13:30:02,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 13:30:02,818 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:30:02,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:30:02,818 INFO L82 PathProgramCache]: Analyzing trace with hash -1997482646, now seen corresponding path program 1 times [2020-10-29 13:30:02,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:30:02,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [712291492] [2020-10-29 13:30:02,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:30:02,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:30:02,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:02,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:03,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:03,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:03,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:03,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:05,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:05,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:05,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:05,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:06,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:06,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:07,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:30:07,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-29 13:30:07,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 13:30:07,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 13:30:07,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:30:07,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:30:07,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:30:07,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:30:07,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-29 13:30:07,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:30:08,380 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 13:30:08,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:30:08,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:30:08,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:08,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:30:08,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:30:08,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:30:08,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 13:30:08,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:30:08,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:30:08,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:30:08,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:30:08,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:30:08,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-29 13:30:08,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:30:08,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [712291492] [2020-10-29 13:30:08,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:30:08,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:30:08,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074396524] [2020-10-29 13:30:08,502 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:30:08,502 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:30:08,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:30:08,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:30:08,503 INFO L87 Difference]: Start difference. First operand 248 states and 345 transitions. Second operand 6 states. [2020-10-29 13:30:08,839 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-29 13:30:09,646 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:30:10,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:30:10,062 INFO L93 Difference]: Finished difference Result 584 states and 857 transitions. [2020-10-29 13:30:10,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:30:10,067 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2020-10-29 13:30:10,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:30:10,071 INFO L225 Difference]: With dead ends: 584 [2020-10-29 13:30:10,071 INFO L226 Difference]: Without dead ends: 398 [2020-10-29 13:30:10,076 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-29 13:30:10,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2020-10-29 13:30:10,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 395. [2020-10-29 13:30:10,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2020-10-29 13:30:10,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 571 transitions. [2020-10-29 13:30:10,112 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 571 transitions. Word has length 99 [2020-10-29 13:30:10,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:30:10,113 INFO L481 AbstractCegarLoop]: Abstraction has 395 states and 571 transitions. [2020-10-29 13:30:10,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:30:10,113 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 571 transitions. [2020-10-29 13:30:10,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-29 13:30:10,115 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:30:10,115 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] [2020-10-29 13:30:10,115 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 13:30:10,115 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:30:10,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:30:10,116 INFO L82 PathProgramCache]: Analyzing trace with hash -1634972520, now seen corresponding path program 1 times [2020-10-29 13:30:10,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:30:10,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [539495160] [2020-10-29 13:30:10,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:30:10,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:30:10,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:10,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:10,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:10,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:10,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:11,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:11,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:13,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:13,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:15,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:30:15,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 13:30:15,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 13:30:15,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 13:30:15,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:30:15,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:30:15,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:30:15,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 13:30:15,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 13:30:15,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:30:15,512 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 13:30:15,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:30:15,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:30:15,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:15,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:30:15,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:30:15,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:30:15,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 13:30:15,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:30:15,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:30:15,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 13:30:15,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:30:15,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 13:30:15,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:30:15,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:30:15,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [539495160] [2020-10-29 13:30:15,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:30:15,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 13:30:15,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147370666] [2020-10-29 13:30:15,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:30:15,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:30:15,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:30:15,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:30:15,591 INFO L87 Difference]: Start difference. First operand 395 states and 571 transitions. Second operand 6 states. [2020-10-29 13:30:15,928 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-29 13:30:16,785 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:30:17,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:30:17,254 INFO L93 Difference]: Finished difference Result 1032 states and 1545 transitions. [2020-10-29 13:30:17,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 13:30:17,255 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 100 [2020-10-29 13:30:17,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:30:17,260 INFO L225 Difference]: With dead ends: 1032 [2020-10-29 13:30:17,260 INFO L226 Difference]: Without dead ends: 695 [2020-10-29 13:30:17,262 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-29 13:30:17,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2020-10-29 13:30:17,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 692. [2020-10-29 13:30:17,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 692 states. [2020-10-29 13:30:17,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1026 transitions. [2020-10-29 13:30:17,330 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1026 transitions. Word has length 100 [2020-10-29 13:30:17,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:30:17,330 INFO L481 AbstractCegarLoop]: Abstraction has 692 states and 1026 transitions. [2020-10-29 13:30:17,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:30:17,330 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1026 transitions. [2020-10-29 13:30:17,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-29 13:30:17,332 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:30:17,332 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:30:17,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 13:30:17,332 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:30:17,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:30:17,333 INFO L82 PathProgramCache]: Analyzing trace with hash 1224121465, now seen corresponding path program 1 times [2020-10-29 13:30:17,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:30:17,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2058313228] [2020-10-29 13:30:17,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:30:17,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:30:17,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:17,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:17,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:17,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:17,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:18,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:20,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:20,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:20,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:20,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:20,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:21,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:21,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:22,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:22,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:30:22,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-29 13:30:22,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 13:30:22,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-29 13:30:22,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:30:22,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:30:22,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 13:30:22,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:30:22,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 13:30:22,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:30:22,707 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 25 [2020-10-29 13:30:23,024 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 13:30:23,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:30:23,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:30:23,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:23,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:30:23,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:30:23,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:30:23,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 13:30:23,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:30:23,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:30:23,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:30:23,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:30:23,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:30:23,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:30:23,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:30:23,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2058313228] [2020-10-29 13:30:23,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:30:23,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 13:30:23,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378490082] [2020-10-29 13:30:23,093 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 13:30:23,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:30:23,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 13:30:23,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-29 13:30:23,094 INFO L87 Difference]: Start difference. First operand 692 states and 1026 transitions. Second operand 8 states. [2020-10-29 13:30:23,471 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-29 13:30:24,589 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-29 13:30:25,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:30:25,267 INFO L93 Difference]: Finished difference Result 1578 states and 2390 transitions. [2020-10-29 13:30:25,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 13:30:25,268 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 101 [2020-10-29 13:30:25,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:30:25,275 INFO L225 Difference]: With dead ends: 1578 [2020-10-29 13:30:25,276 INFO L226 Difference]: Without dead ends: 967 [2020-10-29 13:30:25,279 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2020-10-29 13:30:25,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 967 states. [2020-10-29 13:30:25,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 967 to 692. [2020-10-29 13:30:25,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 692 states. [2020-10-29 13:30:25,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1025 transitions. [2020-10-29 13:30:25,382 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1025 transitions. Word has length 101 [2020-10-29 13:30:25,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:30:25,383 INFO L481 AbstractCegarLoop]: Abstraction has 692 states and 1025 transitions. [2020-10-29 13:30:25,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 13:30:25,383 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1025 transitions. [2020-10-29 13:30:25,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-29 13:30:25,386 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:30:25,386 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 13:30:25,386 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 13:30:25,387 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:30:25,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:30:25,387 INFO L82 PathProgramCache]: Analyzing trace with hash 213953044, now seen corresponding path program 1 times [2020-10-29 13:30:25,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:30:25,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [248583929] [2020-10-29 13:30:25,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:30:25,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:30:25,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:25,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:25,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:25,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:26,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:27,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:27,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:27,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:27,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:27,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:27,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:28,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:28,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:30,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:30:30,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 13:30:30,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 13:30:30,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 13:30:30,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:30:30,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:30:30,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:30:30,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 13:30:30,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 13:30:30,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:30:30,828 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 13:30:30,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:30:30,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:30:30,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:30,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:30:30,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:30:30,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:30:30,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 13:30:30,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:30:30,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:30:30,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:30:30,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:30:30,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:30:30,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 13:30:30,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:30:30,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [248583929] [2020-10-29 13:30:30,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:30:30,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 13:30:30,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071547400] [2020-10-29 13:30:30,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:30:30,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:30:30,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:30:30,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:30:30,903 INFO L87 Difference]: Start difference. First operand 692 states and 1025 transitions. Second operand 9 states. [2020-10-29 13:30:31,301 WARN L193 SmtUtils]: Spent 338.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 13:30:32,439 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-29 13:30:32,789 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:30:33,153 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-29 13:30:33,538 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-29 13:30:33,926 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-29 13:30:34,421 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-29 13:30:34,770 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-29 13:30:35,155 WARN L193 SmtUtils]: Spent 327.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-29 13:30:35,549 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification that was a NOOP. DAG size: 191 [2020-10-29 13:30:35,937 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:30:38,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:30:38,000 INFO L93 Difference]: Finished difference Result 7424 states and 11405 transitions. [2020-10-29 13:30:38,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 13:30:38,001 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 102 [2020-10-29 13:30:38,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:30:38,038 INFO L225 Difference]: With dead ends: 7424 [2020-10-29 13:30:38,038 INFO L226 Difference]: Without dead ends: 6881 [2020-10-29 13:30:38,042 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=237, Invalid=575, Unknown=0, NotChecked=0, Total=812 [2020-10-29 13:30:38,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6881 states. [2020-10-29 13:30:38,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6881 to 1300. [2020-10-29 13:30:38,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1300 states. [2020-10-29 13:30:38,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1300 states to 1300 states and 1949 transitions. [2020-10-29 13:30:38,323 INFO L78 Accepts]: Start accepts. Automaton has 1300 states and 1949 transitions. Word has length 102 [2020-10-29 13:30:38,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:30:38,323 INFO L481 AbstractCegarLoop]: Abstraction has 1300 states and 1949 transitions. [2020-10-29 13:30:38,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 13:30:38,323 INFO L276 IsEmpty]: Start isEmpty. Operand 1300 states and 1949 transitions. [2020-10-29 13:30:38,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-29 13:30:38,325 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:30:38,325 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] [2020-10-29 13:30:38,326 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 13:30:38,326 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:30:38,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:30:38,327 INFO L82 PathProgramCache]: Analyzing trace with hash 2095553495, now seen corresponding path program 1 times [2020-10-29 13:30:38,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:30:38,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [458074004] [2020-10-29 13:30:38,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:30:38,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:30:38,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:38,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:38,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:38,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:40,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:40,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:40,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:40,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:40,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:41,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:41,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:42,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:43,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:30:43,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 13:30:43,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 13:30:43,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-29 13:30:43,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:30:43,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:30:43,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:30:43,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 13:30:43,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-29 13:30:43,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:30:43,727 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 13:30:43,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:30:43,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:30:43,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:43,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:30:43,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:30:43,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:30:43,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 13:30:43,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:30:43,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:30:43,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:30:43,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:30:43,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:30:43,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:30:43,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:30:43,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [458074004] [2020-10-29 13:30:43,801 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:30:43,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 13:30:43,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891940701] [2020-10-29 13:30:43,802 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:30:43,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:30:43,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:30:43,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:30:43,803 INFO L87 Difference]: Start difference. First operand 1300 states and 1949 transitions. Second operand 6 states. [2020-10-29 13:30:44,147 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 13:30:44,952 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-29 13:30:45,308 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-29 13:30:46,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:30:46,073 INFO L93 Difference]: Finished difference Result 3500 states and 5315 transitions. [2020-10-29 13:30:46,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 13:30:46,074 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 103 [2020-10-29 13:30:46,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:30:46,086 INFO L225 Difference]: With dead ends: 3500 [2020-10-29 13:30:46,087 INFO L226 Difference]: Without dead ends: 2417 [2020-10-29 13:30:46,090 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-29 13:30:46,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2417 states. [2020-10-29 13:30:46,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2417 to 2411. [2020-10-29 13:30:46,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2411 states. [2020-10-29 13:30:46,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2411 states to 2411 states and 3637 transitions. [2020-10-29 13:30:46,481 INFO L78 Accepts]: Start accepts. Automaton has 2411 states and 3637 transitions. Word has length 103 [2020-10-29 13:30:46,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:30:46,481 INFO L481 AbstractCegarLoop]: Abstraction has 2411 states and 3637 transitions. [2020-10-29 13:30:46,481 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:30:46,481 INFO L276 IsEmpty]: Start isEmpty. Operand 2411 states and 3637 transitions. [2020-10-29 13:30:46,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-29 13:30:46,483 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:30:46,483 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] [2020-10-29 13:30:46,484 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 13:30:46,484 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:30:46,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:30:46,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1686877121, now seen corresponding path program 1 times [2020-10-29 13:30:46,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:30:46,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [550200479] [2020-10-29 13:30:46,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:30:46,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:30:46,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:46,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:46,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:46,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:48,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:48,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:48,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:48,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:48,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:49,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:49,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:49,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:49,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:50,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:51,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:30:51,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 13:30:51,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 13:30:51,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 13:30:51,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:30:51,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:30:51,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:30:51,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-29 13:30:51,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 13:30:51,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:30:51,866 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 13:30:51,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:30:51,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:30:51,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:51,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:30:51,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:30:51,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:30:51,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 13:30:51,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:30:51,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:30:51,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:30:51,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:30:51,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:30:51,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:30:51,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:30:51,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [550200479] [2020-10-29 13:30:51,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:30:51,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 13:30:51,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152495342] [2020-10-29 13:30:51,911 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:30:51,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:30:51,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:30:51,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:30:51,912 INFO L87 Difference]: Start difference. First operand 2411 states and 3637 transitions. Second operand 6 states. [2020-10-29 13:30:52,278 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 13:30:53,069 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-29 13:30:53,426 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-29 13:30:54,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:30:54,399 INFO L93 Difference]: Finished difference Result 6435 states and 9755 transitions. [2020-10-29 13:30:54,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 13:30:54,405 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 104 [2020-10-29 13:30:54,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:30:54,426 INFO L225 Difference]: With dead ends: 6435 [2020-10-29 13:30:54,426 INFO L226 Difference]: Without dead ends: 4304 [2020-10-29 13:30:54,432 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-29 13:30:54,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4304 states. [2020-10-29 13:30:54,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4304 to 3554. [2020-10-29 13:30:54,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3554 states. [2020-10-29 13:30:55,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3554 states to 3554 states and 5389 transitions. [2020-10-29 13:30:55,011 INFO L78 Accepts]: Start accepts. Automaton has 3554 states and 5389 transitions. Word has length 104 [2020-10-29 13:30:55,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:30:55,011 INFO L481 AbstractCegarLoop]: Abstraction has 3554 states and 5389 transitions. [2020-10-29 13:30:55,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:30:55,012 INFO L276 IsEmpty]: Start isEmpty. Operand 3554 states and 5389 transitions. [2020-10-29 13:30:55,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-29 13:30:55,014 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:30:55,014 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] [2020-10-29 13:30:55,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 13:30:55,015 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:30:55,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:30:55,015 INFO L82 PathProgramCache]: Analyzing trace with hash -696055785, now seen corresponding path program 1 times [2020-10-29 13:30:55,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:30:55,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181414282] [2020-10-29 13:30:55,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:30:55,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:30:55,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:55,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:55,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:55,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:55,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:55,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:57,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:57,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:57,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:57,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:58,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:58,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:30:59,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:00,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:31:00,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 13:31:00,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 13:31:00,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 13:31:00,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:31:00,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:31:00,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:31:00,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-29 13:31:00,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 13:31:00,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:31:00,468 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 13:31:00,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:31:00,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:31:00,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:00,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:31:00,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:31:00,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:31:00,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 13:31:00,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:31:00,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:31:00,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:31:00,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:31:00,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:31:00,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:31:00,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:31:00,518 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1181414282] [2020-10-29 13:31:00,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:31:00,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 13:31:00,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325733043] [2020-10-29 13:31:00,519 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:31:00,519 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:31:00,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:31:00,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:31:00,520 INFO L87 Difference]: Start difference. First operand 3554 states and 5389 transitions. Second operand 6 states. [2020-10-29 13:31:00,893 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 13:31:01,743 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-29 13:31:02,122 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-29 13:31:03,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:31:03,255 INFO L93 Difference]: Finished difference Result 8259 states and 12535 transitions. [2020-10-29 13:31:03,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 13:31:03,256 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 104 [2020-10-29 13:31:03,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:31:03,276 INFO L225 Difference]: With dead ends: 8259 [2020-10-29 13:31:03,276 INFO L226 Difference]: Without dead ends: 5048 [2020-10-29 13:31:03,285 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-29 13:31:03,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5048 states. [2020-10-29 13:31:03,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5048 to 4118. [2020-10-29 13:31:03,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4118 states. [2020-10-29 13:31:03,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4118 states to 4118 states and 6253 transitions. [2020-10-29 13:31:03,897 INFO L78 Accepts]: Start accepts. Automaton has 4118 states and 6253 transitions. Word has length 104 [2020-10-29 13:31:03,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:31:03,897 INFO L481 AbstractCegarLoop]: Abstraction has 4118 states and 6253 transitions. [2020-10-29 13:31:03,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:31:03,898 INFO L276 IsEmpty]: Start isEmpty. Operand 4118 states and 6253 transitions. [2020-10-29 13:31:03,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-29 13:31:03,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:31:03,900 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] [2020-10-29 13:31:03,900 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 13:31:03,901 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:31:03,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:31:03,901 INFO L82 PathProgramCache]: Analyzing trace with hash 611892742, now seen corresponding path program 1 times [2020-10-29 13:31:03,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:31:03,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [244306925] [2020-10-29 13:31:03,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:31:03,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:31:03,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:03,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:04,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:04,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:04,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:04,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:05,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:05,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:06,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:06,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:06,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:08,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:08,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:08,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:31:08,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 13:31:08,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 13:31:08,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-29 13:31:08,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:31:08,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:31:08,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:31:08,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-29 13:31:08,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 13:31:08,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:31:09,294 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 13:31:09,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:31:09,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:31:09,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:09,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:31:09,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:31:09,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:31:09,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 13:31:09,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:31:09,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:31:09,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:31:09,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:31:09,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:31:09,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:31:09,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:31:09,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [244306925] [2020-10-29 13:31:09,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:31:09,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 13:31:09,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445312040] [2020-10-29 13:31:09,331 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:31:09,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:31:09,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:31:09,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:31:09,332 INFO L87 Difference]: Start difference. First operand 4118 states and 6253 transitions. Second operand 6 states. [2020-10-29 13:31:09,693 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 13:31:10,514 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-29 13:31:10,845 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-29 13:31:11,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:31:11,808 INFO L93 Difference]: Finished difference Result 9467 states and 14371 transitions. [2020-10-29 13:31:11,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 13:31:11,809 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 104 [2020-10-29 13:31:11,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:31:11,835 INFO L225 Difference]: With dead ends: 9467 [2020-10-29 13:31:11,835 INFO L226 Difference]: Without dead ends: 5716 [2020-10-29 13:31:11,844 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-29 13:31:11,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5716 states. [2020-10-29 13:31:12,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5716 to 4686. [2020-10-29 13:31:12,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4686 states. [2020-10-29 13:31:12,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4686 states to 4686 states and 7121 transitions. [2020-10-29 13:31:12,356 INFO L78 Accepts]: Start accepts. Automaton has 4686 states and 7121 transitions. Word has length 104 [2020-10-29 13:31:12,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:31:12,357 INFO L481 AbstractCegarLoop]: Abstraction has 4686 states and 7121 transitions. [2020-10-29 13:31:12,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:31:12,357 INFO L276 IsEmpty]: Start isEmpty. Operand 4686 states and 7121 transitions. [2020-10-29 13:31:12,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-29 13:31:12,359 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:31:12,360 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] [2020-10-29 13:31:12,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 13:31:12,360 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:31:12,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:31:12,361 INFO L82 PathProgramCache]: Analyzing trace with hash -755727280, now seen corresponding path program 1 times [2020-10-29 13:31:12,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:31:12,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [789995562] [2020-10-29 13:31:12,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:31:12,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:31:12,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:12,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:12,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:12,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:12,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:12,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:15,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:15,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:15,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:15,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:16,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:16,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:17,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:31:17,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-29 13:31:17,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 13:31:17,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 13:31:17,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:31:17,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:31:17,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:31:17,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:31:17,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 13:31:17,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:31:17,940 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 13:31:17,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:31:17,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:31:17,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:17,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:31:17,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:31:17,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:31:17,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 13:31:17,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:31:17,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:31:17,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:31:17,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:31:17,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:31:17,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:31:18,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:31:18,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [789995562] [2020-10-29 13:31:18,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:31:18,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 13:31:18,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74589360] [2020-10-29 13:31:18,001 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:31:18,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:31:18,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:31:18,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:31:18,002 INFO L87 Difference]: Start difference. First operand 4686 states and 7121 transitions. Second operand 9 states. [2020-10-29 13:31:18,402 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 13:31:20,003 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-29 13:31:22,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:31:22,097 INFO L93 Difference]: Finished difference Result 13853 states and 21061 transitions. [2020-10-29 13:31:22,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 13:31:22,098 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 104 [2020-10-29 13:31:22,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:31:22,116 INFO L225 Difference]: With dead ends: 13853 [2020-10-29 13:31:22,117 INFO L226 Difference]: Without dead ends: 9336 [2020-10-29 13:31:22,127 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2020-10-29 13:31:22,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9336 states. [2020-10-29 13:31:22,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9336 to 4686. [2020-10-29 13:31:22,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4686 states. [2020-10-29 13:31:22,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4686 states to 4686 states and 7119 transitions. [2020-10-29 13:31:22,859 INFO L78 Accepts]: Start accepts. Automaton has 4686 states and 7119 transitions. Word has length 104 [2020-10-29 13:31:22,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:31:22,859 INFO L481 AbstractCegarLoop]: Abstraction has 4686 states and 7119 transitions. [2020-10-29 13:31:22,859 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 13:31:22,859 INFO L276 IsEmpty]: Start isEmpty. Operand 4686 states and 7119 transitions. [2020-10-29 13:31:22,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-29 13:31:22,861 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:31:22,861 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] [2020-10-29 13:31:22,862 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 13:31:22,862 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:31:22,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:31:22,862 INFO L82 PathProgramCache]: Analyzing trace with hash -425453409, now seen corresponding path program 1 times [2020-10-29 13:31:22,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:31:22,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [296265643] [2020-10-29 13:31:22,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:31:22,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:31:22,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:22,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:23,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:23,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:23,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:23,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:23,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:24,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:24,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:24,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:26,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:26,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:27,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:31:27,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-29 13:31:27,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 13:31:27,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 13:31:27,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:31:27,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:31:27,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:31:27,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:31:27,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 13:31:27,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:31:28,444 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 13:31:28,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:31:28,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:31:28,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:28,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:31:28,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:31:28,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:31:28,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 13:31:28,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:31:28,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:31:28,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:31:28,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:31:28,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:31:28,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:31:28,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:31:28,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [296265643] [2020-10-29 13:31:28,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:31:28,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 13:31:28,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642552548] [2020-10-29 13:31:28,484 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:31:28,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:31:28,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:31:28,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:31:28,485 INFO L87 Difference]: Start difference. First operand 4686 states and 7119 transitions. Second operand 9 states. [2020-10-29 13:31:28,881 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 13:31:30,422 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-29 13:31:32,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:31:32,851 INFO L93 Difference]: Finished difference Result 13764 states and 20925 transitions. [2020-10-29 13:31:32,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 13:31:32,852 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 105 [2020-10-29 13:31:32,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:31:32,873 INFO L225 Difference]: With dead ends: 13764 [2020-10-29 13:31:32,873 INFO L226 Difference]: Without dead ends: 9331 [2020-10-29 13:31:32,883 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2020-10-29 13:31:32,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9331 states. [2020-10-29 13:31:33,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9331 to 4686. [2020-10-29 13:31:33,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4686 states. [2020-10-29 13:31:33,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4686 states to 4686 states and 7115 transitions. [2020-10-29 13:31:33,798 INFO L78 Accepts]: Start accepts. Automaton has 4686 states and 7115 transitions. Word has length 105 [2020-10-29 13:31:33,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:31:33,798 INFO L481 AbstractCegarLoop]: Abstraction has 4686 states and 7115 transitions. [2020-10-29 13:31:33,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 13:31:33,798 INFO L276 IsEmpty]: Start isEmpty. Operand 4686 states and 7115 transitions. [2020-10-29 13:31:33,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-29 13:31:33,800 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:31:33,800 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] [2020-10-29 13:31:33,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 13:31:33,801 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:31:33,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:31:33,801 INFO L82 PathProgramCache]: Analyzing trace with hash 629199659, now seen corresponding path program 1 times [2020-10-29 13:31:33,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:31:33,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [691742984] [2020-10-29 13:31:33,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:31:33,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:31:33,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:33,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:33,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:34,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:34,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:34,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:34,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:34,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:35,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:36,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:36,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:37,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:38,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:31:38,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-29 13:31:38,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 13:31:38,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 13:31:38,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:31:38,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:31:38,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:31:38,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 13:31:38,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-29 13:31:38,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:31:39,191 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 13:31:39,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:31:39,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:31:39,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:39,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:31:39,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:31:39,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:31:39,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 13:31:39,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:31:39,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:31:39,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:31:39,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:31:39,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:31:39,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:31:39,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:31:39,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [691742984] [2020-10-29 13:31:39,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:31:39,230 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 13:31:39,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189546590] [2020-10-29 13:31:39,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:31:39,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:31:39,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:31:39,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:31:39,231 INFO L87 Difference]: Start difference. First operand 4686 states and 7115 transitions. Second operand 6 states. [2020-10-29 13:31:39,592 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 13:31:40,461 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-29 13:31:40,815 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-29 13:31:42,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:31:42,378 INFO L93 Difference]: Finished difference Result 10832 states and 16441 transitions. [2020-10-29 13:31:42,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 13:31:42,379 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 105 [2020-10-29 13:31:42,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:31:42,393 INFO L225 Difference]: With dead ends: 10832 [2020-10-29 13:31:42,394 INFO L226 Difference]: Without dead ends: 6541 [2020-10-29 13:31:42,403 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-29 13:31:42,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6541 states. [2020-10-29 13:31:43,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6541 to 5255. [2020-10-29 13:31:43,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5255 states. [2020-10-29 13:31:43,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5255 states to 5255 states and 7987 transitions. [2020-10-29 13:31:43,394 INFO L78 Accepts]: Start accepts. Automaton has 5255 states and 7987 transitions. Word has length 105 [2020-10-29 13:31:43,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:31:43,395 INFO L481 AbstractCegarLoop]: Abstraction has 5255 states and 7987 transitions. [2020-10-29 13:31:43,395 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:31:43,395 INFO L276 IsEmpty]: Start isEmpty. Operand 5255 states and 7987 transitions. [2020-10-29 13:31:43,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-29 13:31:43,397 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:31:43,397 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] [2020-10-29 13:31:43,397 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 13:31:43,398 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:31:43,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:31:43,398 INFO L82 PathProgramCache]: Analyzing trace with hash -1560243895, now seen corresponding path program 1 times [2020-10-29 13:31:43,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:31:43,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1377332755] [2020-10-29 13:31:43,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:31:43,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:31:43,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:43,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:43,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:43,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:44,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:44,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:44,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:44,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:45,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:45,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:45,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:46,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:47,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:47,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:48,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:31:48,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 13:31:48,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 13:31:48,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 13:31:48,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:31:48,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:31:48,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:31:48,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:31:48,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 13:31:48,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:31:48,938 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 13:31:48,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:31:48,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:31:48,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:48,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:31:48,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:31:48,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:31:48,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 13:31:48,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:31:48,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:31:48,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:31:48,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:31:48,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:31:48,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:31:48,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:31:48,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1377332755] [2020-10-29 13:31:48,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:31:48,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 13:31:48,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943419170] [2020-10-29 13:31:48,982 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:31:48,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:31:48,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:31:48,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:31:48,983 INFO L87 Difference]: Start difference. First operand 5255 states and 7987 transitions. Second operand 9 states. [2020-10-29 13:31:49,391 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 13:31:50,892 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-29 13:31:53,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:31:53,419 INFO L93 Difference]: Finished difference Result 12715 states and 19345 transitions. [2020-10-29 13:31:53,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 13:31:53,420 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 106 [2020-10-29 13:31:53,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:31:53,437 INFO L225 Difference]: With dead ends: 12715 [2020-10-29 13:31:53,437 INFO L226 Difference]: Without dead ends: 7762 [2020-10-29 13:31:53,449 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2020-10-29 13:31:53,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7762 states. [2020-10-29 13:31:54,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7762 to 5255. [2020-10-29 13:31:54,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5255 states. [2020-10-29 13:31:54,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5255 states to 5255 states and 7978 transitions. [2020-10-29 13:31:54,653 INFO L78 Accepts]: Start accepts. Automaton has 5255 states and 7978 transitions. Word has length 106 [2020-10-29 13:31:54,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:31:54,654 INFO L481 AbstractCegarLoop]: Abstraction has 5255 states and 7978 transitions. [2020-10-29 13:31:54,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 13:31:54,654 INFO L276 IsEmpty]: Start isEmpty. Operand 5255 states and 7978 transitions. [2020-10-29 13:31:54,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-29 13:31:54,656 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:31:54,656 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] [2020-10-29 13:31:54,657 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 13:31:54,657 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:31:54,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:31:54,657 INFO L82 PathProgramCache]: Analyzing trace with hash -1291689329, now seen corresponding path program 1 times [2020-10-29 13:31:54,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:31:54,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [369652174] [2020-10-29 13:31:54,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:31:54,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:31:54,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:54,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:54,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:55,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:55,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:55,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:55,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:56,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:56,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:57,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:57,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:31:59,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:31:59,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-29 13:31:59,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 13:31:59,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 13:31:59,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:31:59,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:31:59,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:31:59,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:31:59,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-29 13:31:59,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:32:00,164 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 13:32:00,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:32:00,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:32:00,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:00,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:32:00,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:32:00,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:32:00,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 13:32:00,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:32:00,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:32:00,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:32:00,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:32:00,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:32:00,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:32:00,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:32:00,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [369652174] [2020-10-29 13:32:00,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:32:00,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 13:32:00,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508266819] [2020-10-29 13:32:00,214 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:32:00,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:32:00,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:32:00,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:32:00,215 INFO L87 Difference]: Start difference. First operand 5255 states and 7978 transitions. Second operand 9 states. [2020-10-29 13:32:00,621 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 13:32:02,091 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-29 13:32:04,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:32:04,341 INFO L93 Difference]: Finished difference Result 12733 states and 19354 transitions. [2020-10-29 13:32:04,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 13:32:04,342 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 107 [2020-10-29 13:32:04,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:32:04,354 INFO L225 Difference]: With dead ends: 12733 [2020-10-29 13:32:04,354 INFO L226 Difference]: Without dead ends: 7762 [2020-10-29 13:32:04,363 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2020-10-29 13:32:04,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7762 states. [2020-10-29 13:32:05,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7762 to 5255. [2020-10-29 13:32:05,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5255 states. [2020-10-29 13:32:05,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5255 states to 5255 states and 7958 transitions. [2020-10-29 13:32:05,621 INFO L78 Accepts]: Start accepts. Automaton has 5255 states and 7958 transitions. Word has length 107 [2020-10-29 13:32:05,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:32:05,622 INFO L481 AbstractCegarLoop]: Abstraction has 5255 states and 7958 transitions. [2020-10-29 13:32:05,622 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 13:32:05,622 INFO L276 IsEmpty]: Start isEmpty. Operand 5255 states and 7958 transitions. [2020-10-29 13:32:05,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-29 13:32:05,624 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:32:05,624 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] [2020-10-29 13:32:05,624 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 13:32:05,624 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:32:05,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:32:05,625 INFO L82 PathProgramCache]: Analyzing trace with hash 1419715646, now seen corresponding path program 1 times [2020-10-29 13:32:05,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:32:05,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1307373340] [2020-10-29 13:32:05,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:32:05,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:32:05,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:05,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:05,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:06,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:06,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:06,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:06,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:08,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:10,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:32:10,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 13:32:10,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 13:32:10,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 13:32:10,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:32:10,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:32:10,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:32:10,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:32:10,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-29 13:32:10,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:32:11,163 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 13:32:11,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:32:11,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:32:11,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:11,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:32:11,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:32:11,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:32:11,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 13:32:11,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:32:11,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:32:11,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:32:11,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:32:11,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:32:11,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:32:11,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:32:11,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1307373340] [2020-10-29 13:32:11,226 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:32:11,226 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 13:32:11,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463998987] [2020-10-29 13:32:11,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:32:11,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:32:11,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:32:11,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:32:11,230 INFO L87 Difference]: Start difference. First operand 5255 states and 7958 transitions. Second operand 9 states. [2020-10-29 13:32:11,607 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 13:32:13,130 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 189 [2020-10-29 13:32:16,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:32:16,423 INFO L93 Difference]: Finished difference Result 15225 states and 23106 transitions. [2020-10-29 13:32:16,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 13:32:16,423 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 108 [2020-10-29 13:32:16,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:32:16,436 INFO L225 Difference]: With dead ends: 15225 [2020-10-29 13:32:16,436 INFO L226 Difference]: Without dead ends: 10370 [2020-10-29 13:32:16,445 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=97, Invalid=323, Unknown=0, NotChecked=0, Total=420 [2020-10-29 13:32:16,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10370 states. [2020-10-29 13:32:17,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10370 to 5255. [2020-10-29 13:32:17,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5255 states. [2020-10-29 13:32:17,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5255 states to 5255 states and 7934 transitions. [2020-10-29 13:32:17,835 INFO L78 Accepts]: Start accepts. Automaton has 5255 states and 7934 transitions. Word has length 108 [2020-10-29 13:32:17,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:32:17,835 INFO L481 AbstractCegarLoop]: Abstraction has 5255 states and 7934 transitions. [2020-10-29 13:32:17,835 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 13:32:17,835 INFO L276 IsEmpty]: Start isEmpty. Operand 5255 states and 7934 transitions. [2020-10-29 13:32:17,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-29 13:32:17,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:32:17,838 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] [2020-10-29 13:32:17,838 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 13:32:17,838 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:32:17,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:32:17,839 INFO L82 PathProgramCache]: Analyzing trace with hash 1963099929, now seen corresponding path program 1 times [2020-10-29 13:32:17,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:32:17,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [988317356] [2020-10-29 13:32:17,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:32:17,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:32:17,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:17,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:18,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:18,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:18,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:19,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:22,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:32:22,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 13:32:22,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 13:32:22,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 13:32:22,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:32:22,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:32:22,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 13:32:22,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-29 13:32:22,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 13:32:22,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:32:23,243 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 13:32:23,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:32:23,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:32:23,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:23,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:32:23,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:32:23,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:32:23,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 13:32:23,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:32:23,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:32:23,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:32:23,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:32:23,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:32:23,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:32:23,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:32:23,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [988317356] [2020-10-29 13:32:23,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:32:23,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 13:32:23,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146862760] [2020-10-29 13:32:23,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 13:32:23,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:32:23,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 13:32:23,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-29 13:32:23,293 INFO L87 Difference]: Start difference. First operand 5255 states and 7934 transitions. Second operand 6 states. [2020-10-29 13:32:23,662 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 13:32:24,605 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-29 13:32:25,003 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-29 13:32:27,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:32:27,233 INFO L93 Difference]: Finished difference Result 11940 states and 18072 transitions. [2020-10-29 13:32:27,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 13:32:27,234 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 108 [2020-10-29 13:32:27,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:32:27,241 INFO L225 Difference]: With dead ends: 11940 [2020-10-29 13:32:27,241 INFO L226 Difference]: Without dead ends: 7109 [2020-10-29 13:32:27,248 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-29 13:32:27,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7109 states. [2020-10-29 13:32:28,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7109 to 5799. [2020-10-29 13:32:28,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5799 states. [2020-10-29 13:32:28,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5799 states to 5799 states and 8766 transitions. [2020-10-29 13:32:28,722 INFO L78 Accepts]: Start accepts. Automaton has 5799 states and 8766 transitions. Word has length 108 [2020-10-29 13:32:28,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:32:28,722 INFO L481 AbstractCegarLoop]: Abstraction has 5799 states and 8766 transitions. [2020-10-29 13:32:28,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 13:32:28,722 INFO L276 IsEmpty]: Start isEmpty. Operand 5799 states and 8766 transitions. [2020-10-29 13:32:28,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-29 13:32:28,724 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:32:28,724 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] [2020-10-29 13:32:28,725 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 13:32:28,725 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:32:28,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:32:28,725 INFO L82 PathProgramCache]: Analyzing trace with hash -829856839, now seen corresponding path program 1 times [2020-10-29 13:32:28,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:32:28,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1461600281] [2020-10-29 13:32:28,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:32:28,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:32:28,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:28,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:29,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:29,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:32,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:33,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:33,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:32:33,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 13:32:33,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 13:32:33,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 13:32:33,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:32:33,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:32:33,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 13:32:33,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:32:33,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-29 13:32:33,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:32:34,006 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 25 [2020-10-29 13:32:34,352 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 13:32:34,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:32:34,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:32:34,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:34,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:32:34,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:32:34,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:32:34,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 13:32:34,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:32:34,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:32:34,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:32:34,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:32:34,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:32:34,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:32:34,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:32:34,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1461600281] [2020-10-29 13:32:34,396 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:32:34,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-29 13:32:34,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996918126] [2020-10-29 13:32:34,397 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 13:32:34,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:32:34,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 13:32:34,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-29 13:32:34,398 INFO L87 Difference]: Start difference. First operand 5799 states and 8766 transitions. Second operand 10 states. [2020-10-29 13:32:34,764 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 13:32:36,309 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-29 13:32:39,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:32:39,144 INFO L93 Difference]: Finished difference Result 13901 states and 21146 transitions. [2020-10-29 13:32:39,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 13:32:39,145 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 109 [2020-10-29 13:32:39,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:32:39,153 INFO L225 Difference]: With dead ends: 13901 [2020-10-29 13:32:39,153 INFO L226 Difference]: Without dead ends: 8482 [2020-10-29 13:32:39,161 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2020-10-29 13:32:39,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8482 states. [2020-10-29 13:32:40,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8482 to 5775. [2020-10-29 13:32:40,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5775 states. [2020-10-29 13:32:40,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5775 states to 5775 states and 8725 transitions. [2020-10-29 13:32:40,705 INFO L78 Accepts]: Start accepts. Automaton has 5775 states and 8725 transitions. Word has length 109 [2020-10-29 13:32:40,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:32:40,706 INFO L481 AbstractCegarLoop]: Abstraction has 5775 states and 8725 transitions. [2020-10-29 13:32:40,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 13:32:40,706 INFO L276 IsEmpty]: Start isEmpty. Operand 5775 states and 8725 transitions. [2020-10-29 13:32:40,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-29 13:32:40,707 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:32:40,707 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] [2020-10-29 13:32:40,707 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 13:32:40,708 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:32:40,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:32:40,708 INFO L82 PathProgramCache]: Analyzing trace with hash -376460229, now seen corresponding path program 1 times [2020-10-29 13:32:40,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:32:40,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [340813291] [2020-10-29 13:32:40,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:32:40,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:32:40,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:41,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:41,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:41,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:43,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:43,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:45,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:32:45,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 13:32:45,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 13:32:45,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 13:32:45,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:32:45,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:32:45,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 13:32:45,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 13:32:45,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 13:32:45,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:32:45,991 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 25 [2020-10-29 13:32:46,357 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 13:32:46,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:32:46,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:32:46,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:46,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:32:46,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:32:46,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:32:46,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 13:32:46,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:32:46,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:32:46,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:32:46,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:32:46,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:32:46,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:32:46,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:32:46,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [340813291] [2020-10-29 13:32:46,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:32:46,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-29 13:32:46,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628368345] [2020-10-29 13:32:46,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 13:32:46,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:32:46,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 13:32:46,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-29 13:32:46,410 INFO L87 Difference]: Start difference. First operand 5775 states and 8725 transitions. Second operand 10 states. [2020-10-29 13:32:46,788 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-29 13:32:48,588 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-29 13:32:52,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 13:32:52,329 INFO L93 Difference]: Finished difference Result 16705 states and 25405 transitions. [2020-10-29 13:32:52,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 13:32:52,330 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 109 [2020-10-29 13:32:52,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 13:32:52,342 INFO L225 Difference]: With dead ends: 16705 [2020-10-29 13:32:52,342 INFO L226 Difference]: Without dead ends: 11208 [2020-10-29 13:32:52,351 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2020-10-29 13:32:52,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11208 states. [2020-10-29 13:32:54,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11208 to 5692. [2020-10-29 13:32:54,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5692 states. [2020-10-29 13:32:54,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5692 states to 5692 states and 8613 transitions. [2020-10-29 13:32:54,096 INFO L78 Accepts]: Start accepts. Automaton has 5692 states and 8613 transitions. Word has length 109 [2020-10-29 13:32:54,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 13:32:54,096 INFO L481 AbstractCegarLoop]: Abstraction has 5692 states and 8613 transitions. [2020-10-29 13:32:54,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 13:32:54,096 INFO L276 IsEmpty]: Start isEmpty. Operand 5692 states and 8613 transitions. [2020-10-29 13:32:54,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-29 13:32:54,097 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 13:32:54,098 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] [2020-10-29 13:32:54,098 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 13:32:54,098 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 13:32:54,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 13:32:54,098 INFO L82 PathProgramCache]: Analyzing trace with hash -542656781, now seen corresponding path program 1 times [2020-10-29 13:32:54,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 13:32:54,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [420115501] [2020-10-29 13:32:54,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 13:32:54,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:32:54,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:54,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:54,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:55,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:59,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:32:59,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 13:32:59,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 13:32:59,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 13:32:59,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:32:59,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:32:59,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 13:32:59,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 13:32:59,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 13:32:59,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:32:59,606 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-29 13:32:59,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 13:32:59,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 13:32:59,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 13:32:59,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 13:32:59,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 13:32:59,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 13:32:59,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 13:32:59,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 13:32:59,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 13:32:59,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 13:32:59,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 13:32:59,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 13:32:59,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 13:32:59,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 13:32:59,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [420115501] [2020-10-29 13:32:59,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 13:32:59,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 13:32:59,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490343710] [2020-10-29 13:32:59,660 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 13:32:59,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 13:32:59,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 13:32:59,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-29 13:32:59,661 INFO L87 Difference]: Start difference. First operand 5692 states and 8613 transitions. Second operand 9 states. [2020-10-29 13:33:00,210 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification that was a NOOP. DAG size: 199 [2020-10-29 13:33:01,582 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 13:33:01,976 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 187 [2020-10-29 13:33:02,451 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 13:33:02,944 WARN L193 SmtUtils]: Spent 403.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2020-10-29 13:33:03,345 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-29 13:33:03,705 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 185 [2020-10-29 13:33:07,528 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-29 13:33:07,867 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-29 13:33:08,425 WARN L193 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 193 [2020-10-29 13:33:08,781 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification that was a NOOP. DAG size: 187