/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 00:21:03,204 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 00:21:03,207 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 00:21:03,244 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 00:21:03,244 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 00:21:03,246 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 00:21:03,248 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 00:21:03,250 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 00:21:03,253 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 00:21:03,254 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 00:21:03,255 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 00:21:03,257 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 00:21:03,257 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 00:21:03,258 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 00:21:03,260 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 00:21:03,261 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 00:21:03,263 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 00:21:03,264 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 00:21:03,266 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 00:21:03,269 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 00:21:03,271 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 00:21:03,272 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 00:21:03,274 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 00:21:03,275 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 00:21:03,300 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 00:21:03,307 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 00:21:03,307 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 00:21:03,308 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 00:21:03,309 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 00:21:03,311 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 00:21:03,312 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 00:21:03,313 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 00:21:03,315 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 00:21:03,316 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 00:21:03,318 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 00:21:03,318 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 00:21:03,319 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 00:21:03,319 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 00:21:03,319 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 00:21:03,320 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 00:21:03,321 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 00:21:03,322 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 00:21:03,387 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 00:21:03,388 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 00:21:03,392 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 00:21:03,393 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 00:21:03,393 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 00:21:03,393 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 00:21:03,393 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 00:21:03,394 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 00:21:03,394 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 00:21:03,394 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 00:21:03,394 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 00:21:03,395 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 00:21:03,395 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 00:21:03,396 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 00:21:03,397 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 00:21:03,397 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 00:21:03,397 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 00:21:03,398 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 00:21:03,398 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 00:21:03,398 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 00:21:03,398 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 00:21:03,399 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 00:21:03,399 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 00:21:03,399 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 00:21:03,399 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 00:21:03,400 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 00:21:03,400 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 00:21:03,400 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 00:21:03,401 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 00:21:03,401 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-28 00:21:03,782 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 00:21:03,813 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 00:21:03,816 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 00:21:03,818 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 00:21:03,819 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 00:21:03,822 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-28 00:21:03,911 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4d36aea49/871b36057d9f47b68f621eeb4d4729d0/FLAG9ac79362f [2020-10-28 00:21:04,695 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 00:21:04,696 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.5.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-28 00:21:04,712 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4d36aea49/871b36057d9f47b68f621eeb4d4729d0/FLAG9ac79362f [2020-10-28 00:21:04,964 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4d36aea49/871b36057d9f47b68f621eeb4d4729d0 [2020-10-28 00:21:04,972 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 00:21:04,981 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 00:21:04,985 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 00:21:04,986 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 00:21:04,990 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 00:21:04,992 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:21:04" (1/1) ... [2020-10-28 00:21:04,997 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f096995 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:21:04, skipping insertion in model container [2020-10-28 00:21:04,997 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:21:04" (1/1) ... [2020-10-28 00:21:05,006 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 00:21:05,088 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 00:21:05,449 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 00:21:05,466 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 00:21:05,568 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 00:21:05,617 INFO L208 MainTranslator]: Completed translation [2020-10-28 00:21:05,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:21:05 WrapperNode [2020-10-28 00:21:05,618 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 00:21:05,620 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 00:21:05,620 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 00:21:05,620 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 00:21:05,636 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:21:05" (1/1) ... [2020-10-28 00:21:05,636 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:21:05" (1/1) ... [2020-10-28 00:21:05,653 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:21:05" (1/1) ... [2020-10-28 00:21:05,654 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:21:05" (1/1) ... [2020-10-28 00:21:05,675 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:21:05" (1/1) ... [2020-10-28 00:21:05,705 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:21:05" (1/1) ... [2020-10-28 00:21:05,711 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:21:05" (1/1) ... [2020-10-28 00:21:05,718 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 00:21:05,719 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 00:21:05,719 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 00:21:05,719 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 00:21:05,720 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:21:05" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 00:21:05,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 00:21:05,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 00:21:05,856 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 00:21:05,856 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 00:21:05,857 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 00:21:05,858 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 00:21:05,858 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 00:21:05,858 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 00:21:05,858 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 00:21:05,858 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 00:21:05,859 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 00:21:05,860 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-28 00:21:05,860 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 00:21:05,860 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 00:21:05,861 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 00:21:05,862 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 00:21:05,862 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 00:21:05,863 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 00:21:05,863 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 00:21:05,863 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-28 00:21:05,863 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-10-28 00:21:05,864 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 00:21:05,864 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 00:21:05,864 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 00:21:05,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 00:21:05,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 00:21:05,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 00:21:05,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 00:21:05,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 00:21:05,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 00:21:07,347 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 00:21:07,348 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 00:21:07,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:21:07 BoogieIcfgContainer [2020-10-28 00:21:07,350 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 00:21:07,352 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 00:21:07,352 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 00:21:07,356 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 00:21:07,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:21:04" (1/3) ... [2020-10-28 00:21:07,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25402486 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:21:07, skipping insertion in model container [2020-10-28 00:21:07,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:21:05" (2/3) ... [2020-10-28 00:21:07,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25402486 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:21:07, skipping insertion in model container [2020-10-28 00:21:07,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:21:07" (3/3) ... [2020-10-28 00:21:07,360 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2020-10-28 00:21:07,393 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 00:21:07,399 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 00:21:07,413 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 00:21:07,443 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 00:21:07,443 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 00:21:07,443 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 00:21:07,444 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 00:21:07,444 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 00:21:07,444 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 00:21:07,444 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 00:21:07,444 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 00:21:07,468 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states. [2020-10-28 00:21:07,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-28 00:21:07,480 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:21:07,481 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:21:07,481 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:21:07,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:21:07,488 INFO L82 PathProgramCache]: Analyzing trace with hash 1870353334, now seen corresponding path program 1 times [2020-10-28 00:21:07,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:21:07,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2013989972] [2020-10-28 00:21:07,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:21:07,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:21:08,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:08,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:08,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:12,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:21:12,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-28 00:21:12,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 00:21:12,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4649 [2020-10-28 00:21:12,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:21:12,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:21:12,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-28 00:21:12,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 00:21:12,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 00:21:12,963 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-28 00:21:12,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:21:12,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:21:12,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:12,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:21:12,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:21:12,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:21:12,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 00:21:12,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:21:12,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:21:12,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:21:12,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:21:12,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:21:13,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:21:13,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2013989972] [2020-10-28 00:21:13,039 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:21:13,039 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:21:13,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83642543] [2020-10-28 00:21:13,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:21:13,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:21:13,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:21:13,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:21:13,064 INFO L87 Difference]: Start difference. First operand 224 states. Second operand 4 states. [2020-10-28 00:21:13,478 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 178 [2020-10-28 00:21:14,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:21:14,812 INFO L93 Difference]: Finished difference Result 449 states and 733 transitions. [2020-10-28 00:21:14,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:21:14,814 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 85 [2020-10-28 00:21:14,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:21:14,831 INFO L225 Difference]: With dead ends: 449 [2020-10-28 00:21:14,831 INFO L226 Difference]: Without dead ends: 334 [2020-10-28 00:21:14,836 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:21:14,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2020-10-28 00:21:14,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 331. [2020-10-28 00:21:14,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2020-10-28 00:21:14,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 495 transitions. [2020-10-28 00:21:14,941 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 495 transitions. Word has length 85 [2020-10-28 00:21:14,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:21:14,943 INFO L481 AbstractCegarLoop]: Abstraction has 331 states and 495 transitions. [2020-10-28 00:21:14,943 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:21:14,944 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 495 transitions. [2020-10-28 00:21:14,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-28 00:21:14,952 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:21:14,952 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] [2020-10-28 00:21:14,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 00:21:14,953 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:21:14,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:21:14,959 INFO L82 PathProgramCache]: Analyzing trace with hash 2087869517, now seen corresponding path program 1 times [2020-10-28 00:21:14,959 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:21:14,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2110153282] [2020-10-28 00:21:14,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:21:15,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:21:15,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:15,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:16,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:21:16,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-28 00:21:16,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 00:21:16,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1452 [2020-10-28 00:21:16,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:21:16,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:21:16,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-28 00:21:16,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 00:21:16,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 00:21:16,899 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-28 00:21:16,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:21:16,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:21:16,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:16,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:21:16,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:21:16,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:21:16,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 00:21:16,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:21:16,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:21:16,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:21:16,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:21:16,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:21:16,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:21:16,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2110153282] [2020-10-28 00:21:16,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:21:16,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:21:16,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431262752] [2020-10-28 00:21:16,981 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:21:16,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:21:16,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:21:16,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:21:16,982 INFO L87 Difference]: Start difference. First operand 331 states and 495 transitions. Second operand 5 states. [2020-10-28 00:21:18,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:21:18,121 INFO L93 Difference]: Finished difference Result 509 states and 776 transitions. [2020-10-28 00:21:18,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 00:21:18,122 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 86 [2020-10-28 00:21:18,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:21:18,130 INFO L225 Difference]: With dead ends: 509 [2020-10-28 00:21:18,130 INFO L226 Difference]: Without dead ends: 506 [2020-10-28 00:21:18,131 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:21:18,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2020-10-28 00:21:18,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 333. [2020-10-28 00:21:18,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 333 states. [2020-10-28 00:21:18,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 497 transitions. [2020-10-28 00:21:18,198 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 497 transitions. Word has length 86 [2020-10-28 00:21:18,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:21:18,199 INFO L481 AbstractCegarLoop]: Abstraction has 333 states and 497 transitions. [2020-10-28 00:21:18,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:21:18,199 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 497 transitions. [2020-10-28 00:21:18,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-28 00:21:18,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:21:18,209 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:21:18,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 00:21:18,209 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:21:18,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:21:18,210 INFO L82 PathProgramCache]: Analyzing trace with hash 341068845, now seen corresponding path program 1 times [2020-10-28 00:21:18,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:21:18,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2103933649] [2020-10-28 00:21:18,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:21:18,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:21:18,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:18,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:19,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:21:19,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-28 00:21:19,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 00:21:19,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1095 [2020-10-28 00:21:19,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:21:19,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 00:21:19,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 00:21:19,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-28 00:21:19,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:21:19,803 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-28 00:21:19,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:21:19,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:21:19,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:19,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:21:19,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:21:19,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:21:19,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 00:21:19,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:21:19,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:21:19,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:21:19,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:21:19,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:21:19,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:21:19,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2103933649] [2020-10-28 00:21:19,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:21:19,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-28 00:21:19,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646821397] [2020-10-28 00:21:19,903 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 00:21:19,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:21:19,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 00:21:19,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 00:21:19,905 INFO L87 Difference]: Start difference. First operand 333 states and 497 transitions. Second operand 8 states. [2020-10-28 00:21:21,625 WARN L193 SmtUtils]: Spent 311.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-28 00:21:21,991 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 00:21:22,314 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 00:21:22,675 WARN L193 SmtUtils]: Spent 331.00 ms on a formula simplification that was a NOOP. DAG size: 186 [2020-10-28 00:21:23,042 WARN L193 SmtUtils]: Spent 332.00 ms on a formula simplification that was a NOOP. DAG size: 190 [2020-10-28 00:21:24,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:21:24,337 INFO L93 Difference]: Finished difference Result 1434 states and 2214 transitions. [2020-10-28 00:21:24,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 00:21:24,338 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 87 [2020-10-28 00:21:24,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:21:24,346 INFO L225 Difference]: With dead ends: 1434 [2020-10-28 00:21:24,346 INFO L226 Difference]: Without dead ends: 1185 [2020-10-28 00:21:24,349 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-28 00:21:24,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1185 states. [2020-10-28 00:21:24,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1185 to 1173. [2020-10-28 00:21:24,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1173 states. [2020-10-28 00:21:24,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 1806 transitions. [2020-10-28 00:21:24,439 INFO L78 Accepts]: Start accepts. Automaton has 1173 states and 1806 transitions. Word has length 87 [2020-10-28 00:21:24,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:21:24,440 INFO L481 AbstractCegarLoop]: Abstraction has 1173 states and 1806 transitions. [2020-10-28 00:21:24,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 00:21:24,440 INFO L276 IsEmpty]: Start isEmpty. Operand 1173 states and 1806 transitions. [2020-10-28 00:21:24,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-28 00:21:24,443 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:21:24,443 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:21:24,443 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 00:21:24,444 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:21:24,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:21:24,444 INFO L82 PathProgramCache]: Analyzing trace with hash -1873387220, now seen corresponding path program 1 times [2020-10-28 00:21:24,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:21:24,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [915878881] [2020-10-28 00:21:24,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:21:24,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:21:24,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:24,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:25,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:21:25,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-28 00:21:25,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 00:21:25,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 691 [2020-10-28 00:21:25,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:21:25,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 00:21:25,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 00:21:25,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 00:21:25,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:21:25,538 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-28 00:21:25,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:21:25,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:21:25,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:25,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:21:25,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:21:25,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:21:25,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 00:21:25,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:21:25,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:21:25,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:21:25,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:21:25,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:21:25,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:21:25,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [915878881] [2020-10-28 00:21:25,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:21:25,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 00:21:25,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924863722] [2020-10-28 00:21:25,619 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 00:21:25,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:21:25,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 00:21:25,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:21:25,620 INFO L87 Difference]: Start difference. First operand 1173 states and 1806 transitions. Second operand 5 states. [2020-10-28 00:21:25,974 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-28 00:21:26,861 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 182 [2020-10-28 00:21:27,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:21:27,358 INFO L93 Difference]: Finished difference Result 2714 states and 4237 transitions. [2020-10-28 00:21:27,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 00:21:27,359 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2020-10-28 00:21:27,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:21:27,371 INFO L225 Difference]: With dead ends: 2714 [2020-10-28 00:21:27,371 INFO L226 Difference]: Without dead ends: 1911 [2020-10-28 00:21:27,375 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-28 00:21:27,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1911 states. [2020-10-28 00:21:27,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1911 to 1898. [2020-10-28 00:21:27,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1898 states. [2020-10-28 00:21:27,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1898 states to 1898 states and 2937 transitions. [2020-10-28 00:21:27,507 INFO L78 Accepts]: Start accepts. Automaton has 1898 states and 2937 transitions. Word has length 88 [2020-10-28 00:21:27,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:21:27,508 INFO L481 AbstractCegarLoop]: Abstraction has 1898 states and 2937 transitions. [2020-10-28 00:21:27,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 00:21:27,508 INFO L276 IsEmpty]: Start isEmpty. Operand 1898 states and 2937 transitions. [2020-10-28 00:21:27,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-28 00:21:27,510 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:21:27,511 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:21:27,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 00:21:27,511 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:21:27,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:21:27,512 INFO L82 PathProgramCache]: Analyzing trace with hash -2007286090, now seen corresponding path program 1 times [2020-10-28 00:21:27,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:21:27,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [946242155] [2020-10-28 00:21:27,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:21:27,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:21:27,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:27,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:27,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:28,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:28,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:30,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:32,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:21:32,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-28 00:21:32,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 00:21:32,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-28 00:21:32,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:21:32,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:21:32,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-28 00:21:32,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 00:21:32,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:21:32,936 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-28 00:21:32,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:21:32,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:21:32,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:32,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:21:32,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:21:32,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:21:32,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 00:21:32,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:21:32,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:21:32,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:21:32,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:21:32,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:21:33,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:21:33,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [946242155] [2020-10-28 00:21:33,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:21:33,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:21:33,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074988302] [2020-10-28 00:21:33,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:21:33,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:21:33,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:21:33,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:21:33,004 INFO L87 Difference]: Start difference. First operand 1898 states and 2937 transitions. Second operand 4 states. [2020-10-28 00:21:33,340 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-28 00:21:34,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:21:34,403 INFO L93 Difference]: Finished difference Result 2584 states and 4007 transitions. [2020-10-28 00:21:34,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:21:34,403 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 89 [2020-10-28 00:21:34,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:21:34,417 INFO L225 Difference]: With dead ends: 2584 [2020-10-28 00:21:34,417 INFO L226 Difference]: Without dead ends: 2220 [2020-10-28 00:21:34,420 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:21:34,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2220 states. [2020-10-28 00:21:34,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2220 to 2217. [2020-10-28 00:21:34,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2217 states. [2020-10-28 00:21:34,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2217 states to 2217 states and 3401 transitions. [2020-10-28 00:21:34,574 INFO L78 Accepts]: Start accepts. Automaton has 2217 states and 3401 transitions. Word has length 89 [2020-10-28 00:21:34,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:21:34,575 INFO L481 AbstractCegarLoop]: Abstraction has 2217 states and 3401 transitions. [2020-10-28 00:21:34,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:21:34,575 INFO L276 IsEmpty]: Start isEmpty. Operand 2217 states and 3401 transitions. [2020-10-28 00:21:34,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-28 00:21:34,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:21:34,578 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:21:34,578 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 00:21:34,578 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:21:34,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:21:34,579 INFO L82 PathProgramCache]: Analyzing trace with hash -220755669, now seen corresponding path program 1 times [2020-10-28 00:21:34,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:21:34,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [755929327] [2020-10-28 00:21:34,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:21:34,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:21:34,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:34,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:34,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:35,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:35,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:36,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:39,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:21:39,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-28 00:21:39,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 00:21:39,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 00:21:39,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:21:39,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:21:39,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-28 00:21:39,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 00:21:39,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:21:39,964 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-28 00:21:39,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:21:39,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:21:39,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:39,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:21:39,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:21:39,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:21:39,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 00:21:39,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:21:39,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:21:39,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:21:39,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:21:39,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:21:40,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:21:40,033 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [755929327] [2020-10-28 00:21:40,034 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:21:40,034 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:21:40,034 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000168243] [2020-10-28 00:21:40,035 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:21:40,035 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:21:40,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:21:40,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:21:40,036 INFO L87 Difference]: Start difference. First operand 2217 states and 3401 transitions. Second operand 4 states. [2020-10-28 00:21:40,372 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-28 00:21:41,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:21:41,451 INFO L93 Difference]: Finished difference Result 3877 states and 5985 transitions. [2020-10-28 00:21:41,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:21:41,452 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 89 [2020-10-28 00:21:41,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:21:41,469 INFO L225 Difference]: With dead ends: 3877 [2020-10-28 00:21:41,469 INFO L226 Difference]: Without dead ends: 2863 [2020-10-28 00:21:41,474 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:21:41,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2863 states. [2020-10-28 00:21:41,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2863 to 2852. [2020-10-28 00:21:41,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2852 states. [2020-10-28 00:21:41,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2852 states to 2852 states and 4333 transitions. [2020-10-28 00:21:41,707 INFO L78 Accepts]: Start accepts. Automaton has 2852 states and 4333 transitions. Word has length 89 [2020-10-28 00:21:41,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:21:41,707 INFO L481 AbstractCegarLoop]: Abstraction has 2852 states and 4333 transitions. [2020-10-28 00:21:41,707 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:21:41,707 INFO L276 IsEmpty]: Start isEmpty. Operand 2852 states and 4333 transitions. [2020-10-28 00:21:41,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-28 00:21:41,710 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:21:41,710 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:21:41,711 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 00:21:41,711 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:21:41,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:21:41,711 INFO L82 PathProgramCache]: Analyzing trace with hash 34617321, now seen corresponding path program 1 times [2020-10-28 00:21:41,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:21:41,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [609726956] [2020-10-28 00:21:41,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:21:41,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:21:41,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:41,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:41,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:42,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:43,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:43,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:43,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:46,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:21:46,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-28 00:21:46,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 00:21:46,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 00:21:46,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:21:46,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:21:46,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-28 00:21:46,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 00:21:46,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:21:47,089 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-28 00:21:47,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:21:47,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:21:47,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:47,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:21:47,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:21:47,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:21:47,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 00:21:47,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:21:47,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:21:47,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:21:47,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:21:47,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:21:47,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:21:47,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [609726956] [2020-10-28 00:21:47,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:21:47,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:21:47,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41821342] [2020-10-28 00:21:47,127 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:21:47,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:21:47,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:21:47,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:21:47,128 INFO L87 Difference]: Start difference. First operand 2852 states and 4333 transitions. Second operand 4 states. [2020-10-28 00:21:47,427 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-28 00:21:48,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:21:48,590 INFO L93 Difference]: Finished difference Result 6331 states and 9671 transitions. [2020-10-28 00:21:48,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:21:48,590 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 89 [2020-10-28 00:21:48,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:21:48,612 INFO L225 Difference]: With dead ends: 6331 [2020-10-28 00:21:48,612 INFO L226 Difference]: Without dead ends: 4380 [2020-10-28 00:21:48,618 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:21:48,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4380 states. [2020-10-28 00:21:48,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4380 to 4369. [2020-10-28 00:21:48,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4369 states. [2020-10-28 00:21:48,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4369 states to 4369 states and 6573 transitions. [2020-10-28 00:21:48,910 INFO L78 Accepts]: Start accepts. Automaton has 4369 states and 6573 transitions. Word has length 89 [2020-10-28 00:21:48,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:21:48,910 INFO L481 AbstractCegarLoop]: Abstraction has 4369 states and 6573 transitions. [2020-10-28 00:21:48,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:21:48,911 INFO L276 IsEmpty]: Start isEmpty. Operand 4369 states and 6573 transitions. [2020-10-28 00:21:48,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-28 00:21:48,914 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:21:48,914 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:21:48,915 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 00:21:48,915 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:21:48,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:21:48,915 INFO L82 PathProgramCache]: Analyzing trace with hash 17601899, now seen corresponding path program 1 times [2020-10-28 00:21:48,916 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:21:48,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [326349298] [2020-10-28 00:21:48,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:21:48,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:21:48,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:49,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:49,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:49,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:50,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:52,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:21:52,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-28 00:21:52,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 00:21:52,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3547 [2020-10-28 00:21:52,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:21:52,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 00:21:52,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-28 00:21:52,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-28 00:21:52,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:21:52,810 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-28 00:21:52,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:21:52,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:21:52,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:52,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:21:52,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:21:52,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:21:52,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 00:21:52,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:21:52,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:21:52,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:21:52,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:21:52,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:21:52,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:21:52,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [326349298] [2020-10-28 00:21:52,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:21:52,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 00:21:52,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102802380] [2020-10-28 00:21:52,850 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 00:21:52,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:21:52,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 00:21:52,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:21:52,851 INFO L87 Difference]: Start difference. First operand 4369 states and 6573 transitions. Second operand 6 states. [2020-10-28 00:21:54,103 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-28 00:21:55,319 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-28 00:21:56,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:21:56,071 INFO L93 Difference]: Finished difference Result 29974 states and 44898 transitions. [2020-10-28 00:21:56,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 00:21:56,072 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 89 [2020-10-28 00:21:56,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:21:56,203 INFO L225 Difference]: With dead ends: 29974 [2020-10-28 00:21:56,203 INFO L226 Difference]: Without dead ends: 25942 [2020-10-28 00:21:56,222 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 00:21:56,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25942 states. [2020-10-28 00:21:56,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25942 to 4594. [2020-10-28 00:21:56,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4594 states. [2020-10-28 00:21:56,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4594 states to 4594 states and 6768 transitions. [2020-10-28 00:21:56,804 INFO L78 Accepts]: Start accepts. Automaton has 4594 states and 6768 transitions. Word has length 89 [2020-10-28 00:21:56,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:21:56,805 INFO L481 AbstractCegarLoop]: Abstraction has 4594 states and 6768 transitions. [2020-10-28 00:21:56,805 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 00:21:56,805 INFO L276 IsEmpty]: Start isEmpty. Operand 4594 states and 6768 transitions. [2020-10-28 00:21:56,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-28 00:21:56,809 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:21:56,809 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:21:56,809 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 00:21:56,809 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:21:56,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:21:56,810 INFO L82 PathProgramCache]: Analyzing trace with hash 1891214249, now seen corresponding path program 1 times [2020-10-28 00:21:56,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:21:56,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1418373481] [2020-10-28 00:21:56,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:21:56,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:21:56,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:56,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:56,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:57,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:57,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:21:59,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:01,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:22:01,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-28 00:22:01,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 00:22:01,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 00:22:01,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:22:01,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:22:01,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-28 00:22:01,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 00:22:01,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:22:02,219 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-28 00:22:02,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:22:02,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:22:02,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:02,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:22:02,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:22:02,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:22:02,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 00:22:02,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:22:02,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:22:02,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:22:02,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:22:02,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:22:02,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:22:02,265 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1418373481] [2020-10-28 00:22:02,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:22:02,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:22:02,266 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049313739] [2020-10-28 00:22:02,266 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:22:02,266 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:22:02,267 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:22:02,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:22:02,268 INFO L87 Difference]: Start difference. First operand 4594 states and 6768 transitions. Second operand 4 states. [2020-10-28 00:22:02,578 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-28 00:22:03,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:22:03,974 INFO L93 Difference]: Finished difference Result 11880 states and 17667 transitions. [2020-10-28 00:22:03,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:22:03,974 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 89 [2020-10-28 00:22:03,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:22:04,001 INFO L225 Difference]: With dead ends: 11880 [2020-10-28 00:22:04,001 INFO L226 Difference]: Without dead ends: 7977 [2020-10-28 00:22:04,012 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:22:04,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7977 states. [2020-10-28 00:22:04,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7977 to 7974. [2020-10-28 00:22:04,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7974 states. [2020-10-28 00:22:04,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7974 states to 7974 states and 11753 transitions. [2020-10-28 00:22:04,748 INFO L78 Accepts]: Start accepts. Automaton has 7974 states and 11753 transitions. Word has length 89 [2020-10-28 00:22:04,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:22:04,748 INFO L481 AbstractCegarLoop]: Abstraction has 7974 states and 11753 transitions. [2020-10-28 00:22:04,749 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:22:04,749 INFO L276 IsEmpty]: Start isEmpty. Operand 7974 states and 11753 transitions. [2020-10-28 00:22:04,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-28 00:22:04,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:22:04,755 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:22:04,755 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 00:22:04,755 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:22:04,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:22:04,756 INFO L82 PathProgramCache]: Analyzing trace with hash 335098569, now seen corresponding path program 1 times [2020-10-28 00:22:04,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:22:04,756 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1526084577] [2020-10-28 00:22:04,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:22:04,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:22:04,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:04,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:04,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:05,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:05,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:07,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:22:07,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-28 00:22:07,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 00:22:07,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2898 [2020-10-28 00:22:07,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:22:07,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 00:22:07,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-28 00:22:07,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-28 00:22:07,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:22:08,056 WARN L193 SmtUtils]: Spent 309.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-28 00:22:08,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:22:08,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:22:08,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:08,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:22:08,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:22:08,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:22:08,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 00:22:08,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:22:08,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:22:08,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:22:08,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:22:08,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:22:08,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:22:08,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1526084577] [2020-10-28 00:22:08,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:22:08,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 00:22:08,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99435554] [2020-10-28 00:22:08,092 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 00:22:08,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:22:08,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 00:22:08,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:22:08,093 INFO L87 Difference]: Start difference. First operand 7974 states and 11753 transitions. Second operand 6 states. [2020-10-28 00:22:09,265 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-28 00:22:10,967 WARN L193 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-28 00:22:12,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:22:12,012 INFO L93 Difference]: Finished difference Result 42490 states and 62412 transitions. [2020-10-28 00:22:12,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 00:22:12,012 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 89 [2020-10-28 00:22:12,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:22:12,095 INFO L225 Difference]: With dead ends: 42490 [2020-10-28 00:22:12,095 INFO L226 Difference]: Without dead ends: 35613 [2020-10-28 00:22:12,117 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 00:22:12,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35613 states. [2020-10-28 00:22:13,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35613 to 8460. [2020-10-28 00:22:13,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8460 states. [2020-10-28 00:22:13,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8460 states to 8460 states and 12296 transitions. [2020-10-28 00:22:13,066 INFO L78 Accepts]: Start accepts. Automaton has 8460 states and 12296 transitions. Word has length 89 [2020-10-28 00:22:13,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:22:13,067 INFO L481 AbstractCegarLoop]: Abstraction has 8460 states and 12296 transitions. [2020-10-28 00:22:13,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 00:22:13,067 INFO L276 IsEmpty]: Start isEmpty. Operand 8460 states and 12296 transitions. [2020-10-28 00:22:13,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-28 00:22:13,074 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:22:13,074 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:22:13,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 00:22:13,074 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:22:13,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:22:13,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1002390749, now seen corresponding path program 1 times [2020-10-28 00:22:13,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:22:13,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1435235952] [2020-10-28 00:22:13,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:22:13,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:22:13,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:13,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:13,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:13,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:13,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:15,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:22:15,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-28 00:22:15,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 00:22:15,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2267 [2020-10-28 00:22:15,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:22:15,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 00:22:15,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-28 00:22:15,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-28 00:22:15,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:22:15,683 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-28 00:22:15,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:22:15,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:22:15,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:15,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:22:15,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:22:15,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:22:15,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 00:22:15,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:22:15,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:22:15,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:22:15,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:22:15,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 00:22:15,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:22:15,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1435235952] [2020-10-28 00:22:15,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:22:15,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 00:22:15,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054204122] [2020-10-28 00:22:15,724 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 00:22:15,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:22:15,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 00:22:15,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:22:15,725 INFO L87 Difference]: Start difference. First operand 8460 states and 12296 transitions. Second operand 6 states. [2020-10-28 00:22:16,943 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-28 00:22:18,535 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-28 00:22:19,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:22:19,382 INFO L93 Difference]: Finished difference Result 34519 states and 50246 transitions. [2020-10-28 00:22:19,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 00:22:19,383 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 89 [2020-10-28 00:22:19,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:22:19,446 INFO L225 Difference]: With dead ends: 34519 [2020-10-28 00:22:19,446 INFO L226 Difference]: Without dead ends: 27707 [2020-10-28 00:22:19,466 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 00:22:19,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27707 states. [2020-10-28 00:22:21,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27707 to 15194. [2020-10-28 00:22:21,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15194 states. [2020-10-28 00:22:21,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15194 states to 15194 states and 21868 transitions. [2020-10-28 00:22:21,067 INFO L78 Accepts]: Start accepts. Automaton has 15194 states and 21868 transitions. Word has length 89 [2020-10-28 00:22:21,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:22:21,067 INFO L481 AbstractCegarLoop]: Abstraction has 15194 states and 21868 transitions. [2020-10-28 00:22:21,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 00:22:21,067 INFO L276 IsEmpty]: Start isEmpty. Operand 15194 states and 21868 transitions. [2020-10-28 00:22:21,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-28 00:22:21,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:22:21,080 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:22:21,080 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 00:22:21,081 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:22:21,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:22:21,081 INFO L82 PathProgramCache]: Analyzing trace with hash -341302600, now seen corresponding path program 1 times [2020-10-28 00:22:21,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:22:21,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1345557669] [2020-10-28 00:22:21,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:22:21,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:22:21,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:21,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:21,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:21,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:21,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:23,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:22:23,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-28 00:22:23,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 00:22:23,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1889 [2020-10-28 00:22:23,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:22:23,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 00:22:23,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-28 00:22:23,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-28 00:22:23,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:22:23,334 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-28 00:22:23,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:22:23,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:22:23,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:23,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:22:23,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:22:23,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:22:23,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 00:22:23,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:22:23,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:22:23,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:22:23,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:22:23,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:22:23,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:22:23,364 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1345557669] [2020-10-28 00:22:23,364 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:22:23,364 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 00:22:23,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219026003] [2020-10-28 00:22:23,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 00:22:23,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:22:23,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 00:22:23,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:22:23,365 INFO L87 Difference]: Start difference. First operand 15194 states and 21868 transitions. Second operand 6 states. [2020-10-28 00:22:24,819 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-28 00:22:27,277 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-28 00:22:31,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:22:31,203 INFO L93 Difference]: Finished difference Result 93028 states and 132920 transitions. [2020-10-28 00:22:31,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 00:22:31,207 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 89 [2020-10-28 00:22:31,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:22:31,339 INFO L225 Difference]: With dead ends: 93028 [2020-10-28 00:22:31,339 INFO L226 Difference]: Without dead ends: 79679 [2020-10-28 00:22:31,387 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 00:22:31,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79679 states. [2020-10-28 00:22:33,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79679 to 16574. [2020-10-28 00:22:33,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16574 states. [2020-10-28 00:22:33,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16574 states to 16574 states and 23368 transitions. [2020-10-28 00:22:33,669 INFO L78 Accepts]: Start accepts. Automaton has 16574 states and 23368 transitions. Word has length 89 [2020-10-28 00:22:33,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:22:33,670 INFO L481 AbstractCegarLoop]: Abstraction has 16574 states and 23368 transitions. [2020-10-28 00:22:33,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 00:22:33,670 INFO L276 IsEmpty]: Start isEmpty. Operand 16574 states and 23368 transitions. [2020-10-28 00:22:33,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-28 00:22:33,683 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:22:33,683 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:22:33,686 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 00:22:33,686 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:22:33,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:22:33,686 INFO L82 PathProgramCache]: Analyzing trace with hash -413253988, now seen corresponding path program 1 times [2020-10-28 00:22:33,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:22:33,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1121568798] [2020-10-28 00:22:33,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:22:33,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:22:33,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:33,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:33,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:34,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:34,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:34,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:34,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:36,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:38,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:22:38,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-28 00:22:38,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 00:22:38,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-28 00:22:38,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:22:38,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:22:38,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-28 00:22:38,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 00:22:38,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:22:39,055 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-28 00:22:39,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:22:39,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:22:39,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:39,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:22:39,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:22:39,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:22:39,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 00:22:39,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:22:39,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:22:39,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:22:39,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:22:39,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:22:39,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:22:39,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1121568798] [2020-10-28 00:22:39,094 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:22:39,094 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:22:39,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498537097] [2020-10-28 00:22:39,094 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:22:39,095 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:22:39,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:22:39,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:22:39,096 INFO L87 Difference]: Start difference. First operand 16574 states and 23368 transitions. Second operand 4 states. [2020-10-28 00:22:39,390 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 179 [2020-10-28 00:22:42,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:22:42,528 INFO L93 Difference]: Finished difference Result 40105 states and 56858 transitions. [2020-10-28 00:22:42,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:22:42,529 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 89 [2020-10-28 00:22:42,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:22:42,569 INFO L225 Difference]: With dead ends: 40105 [2020-10-28 00:22:42,569 INFO L226 Difference]: Without dead ends: 26704 [2020-10-28 00:22:42,600 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:22:42,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26704 states. [2020-10-28 00:22:44,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26704 to 26685. [2020-10-28 00:22:44,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26685 states. [2020-10-28 00:22:44,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26685 states to 26685 states and 37248 transitions. [2020-10-28 00:22:44,987 INFO L78 Accepts]: Start accepts. Automaton has 26685 states and 37248 transitions. Word has length 89 [2020-10-28 00:22:44,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:22:44,987 INFO L481 AbstractCegarLoop]: Abstraction has 26685 states and 37248 transitions. [2020-10-28 00:22:44,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:22:44,988 INFO L276 IsEmpty]: Start isEmpty. Operand 26685 states and 37248 transitions. [2020-10-28 00:22:45,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-28 00:22:45,008 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:22:45,008 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:22:45,008 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 00:22:45,008 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:22:45,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:22:45,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1460358362, now seen corresponding path program 1 times [2020-10-28 00:22:45,009 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:22:45,009 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [920080199] [2020-10-28 00:22:45,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:22:45,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:22:45,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:45,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:45,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:45,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:45,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:48,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:22:48,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-28 00:22:48,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 00:22:48,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3439 [2020-10-28 00:22:48,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:22:48,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 00:22:48,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-28 00:22:48,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 00:22:48,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:22:48,798 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-28 00:22:48,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:22:48,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:22:48,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:22:48,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:22:48,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:22:48,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:22:48,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 00:22:48,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:22:48,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:22:48,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:22:48,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:22:48,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:22:48,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:22:48,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [920080199] [2020-10-28 00:22:48,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:22:48,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 00:22:48,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581929526] [2020-10-28 00:22:48,827 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 00:22:48,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:22:48,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 00:22:48,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:22:48,828 INFO L87 Difference]: Start difference. First operand 26685 states and 37248 transitions. Second operand 6 states. [2020-10-28 00:22:50,565 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-28 00:22:51,110 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-28 00:22:58,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:22:58,840 INFO L93 Difference]: Finished difference Result 114762 states and 160473 transitions. [2020-10-28 00:22:58,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 00:22:58,841 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 89 [2020-10-28 00:22:58,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:22:59,108 INFO L225 Difference]: With dead ends: 114762 [2020-10-28 00:22:59,109 INFO L226 Difference]: Without dead ends: 91571 [2020-10-28 00:22:59,144 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 00:22:59,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91571 states. [2020-10-28 00:23:02,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91571 to 27140. [2020-10-28 00:23:02,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27140 states. [2020-10-28 00:23:02,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27140 states to 27140 states and 37415 transitions. [2020-10-28 00:23:02,057 INFO L78 Accepts]: Start accepts. Automaton has 27140 states and 37415 transitions. Word has length 89 [2020-10-28 00:23:02,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:23:02,058 INFO L481 AbstractCegarLoop]: Abstraction has 27140 states and 37415 transitions. [2020-10-28 00:23:02,058 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 00:23:02,058 INFO L276 IsEmpty]: Start isEmpty. Operand 27140 states and 37415 transitions. [2020-10-28 00:23:02,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-28 00:23:02,073 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:23:02,074 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:23:02,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 00:23:02,074 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:23:02,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:23:02,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1870197751, now seen corresponding path program 1 times [2020-10-28 00:23:02,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:23:02,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2142577607] [2020-10-28 00:23:02,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:23:02,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:23:02,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:02,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:02,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:02,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:02,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:02,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:02,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:03,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:03,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:03,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:03,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:06,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:07,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:23:07,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-28 00:23:07,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 00:23:07,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 00:23:07,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:23:07,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 00:23:07,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-28 00:23:07,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-28 00:23:07,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:23:07,465 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 31 [2020-10-28 00:23:07,806 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-28 00:23:07,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:23:07,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:23:07,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:07,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:23:07,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:23:07,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:23:07,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 00:23:07,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:23:07,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:23:07,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:23:07,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:23:07,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:23:07,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:23:07,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2142577607] [2020-10-28 00:23:07,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:23:07,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-28 00:23:07,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669081296] [2020-10-28 00:23:07,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 00:23:07,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:23:07,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 00:23:07,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-28 00:23:07,866 INFO L87 Difference]: Start difference. First operand 27140 states and 37415 transitions. Second operand 11 states. [2020-10-28 00:23:08,229 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 00:23:10,387 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2020-10-28 00:23:12,513 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 180 [2020-10-28 00:23:24,794 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-28 00:23:44,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:23:44,410 INFO L93 Difference]: Finished difference Result 267850 states and 369747 transitions. [2020-10-28 00:23:44,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-28 00:23:44,411 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 90 [2020-10-28 00:23:44,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:23:45,061 INFO L225 Difference]: With dead ends: 267850 [2020-10-28 00:23:45,061 INFO L226 Difference]: Without dead ends: 247041 [2020-10-28 00:23:45,129 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=217, Invalid=839, Unknown=0, NotChecked=0, Total=1056 [2020-10-28 00:23:45,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247041 states. [2020-10-28 00:23:50,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247041 to 28793. [2020-10-28 00:23:50,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28793 states. [2020-10-28 00:23:50,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28793 states to 28793 states and 39602 transitions. [2020-10-28 00:23:50,468 INFO L78 Accepts]: Start accepts. Automaton has 28793 states and 39602 transitions. Word has length 90 [2020-10-28 00:23:50,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:23:50,469 INFO L481 AbstractCegarLoop]: Abstraction has 28793 states and 39602 transitions. [2020-10-28 00:23:50,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 00:23:50,469 INFO L276 IsEmpty]: Start isEmpty. Operand 28793 states and 39602 transitions. [2020-10-28 00:23:50,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-28 00:23:50,486 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:23:50,487 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:23:50,487 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 00:23:50,487 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:23:50,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:23:50,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1260721796, now seen corresponding path program 1 times [2020-10-28 00:23:50,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:23:50,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1897838040] [2020-10-28 00:23:50,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:23:50,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:23:50,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:50,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:50,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:50,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:51,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:51,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:51,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:52,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:52,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:52,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:52,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:55,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:23:55,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-28 00:23:55,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 00:23:55,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 00:23:55,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:23:55,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 00:23:55,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-28 00:23:55,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-28 00:23:55,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:23:56,088 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-28 00:23:56,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:23:56,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:23:56,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:23:56,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:23:56,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:23:56,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:23:56,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 00:23:56,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:23:56,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:23:56,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:23:56,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:23:56,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:23:56,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:23:56,126 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1897838040] [2020-10-28 00:23:56,126 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:23:56,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-28 00:23:56,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742320861] [2020-10-28 00:23:56,127 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 00:23:56,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:23:56,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 00:23:56,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-28 00:23:56,128 INFO L87 Difference]: Start difference. First operand 28793 states and 39602 transitions. Second operand 11 states. [2020-10-28 00:23:56,559 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification that was a NOOP. DAG size: 183 [2020-10-28 00:24:00,185 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification that was a NOOP. DAG size: 177 [2020-10-28 00:24:07,000 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 176 [2020-10-28 00:24:13,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:24:13,255 INFO L93 Difference]: Finished difference Result 102684 states and 141623 transitions. [2020-10-28 00:24:13,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-28 00:24:13,255 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 90 [2020-10-28 00:24:13,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:24:13,383 INFO L225 Difference]: With dead ends: 102684 [2020-10-28 00:24:13,383 INFO L226 Difference]: Without dead ends: 87425 [2020-10-28 00:24:13,415 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=239, Invalid=817, Unknown=0, NotChecked=0, Total=1056 [2020-10-28 00:24:13,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87425 states. [2020-10-28 00:24:18,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87425 to 30544. [2020-10-28 00:24:18,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30544 states. [2020-10-28 00:24:18,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30544 states to 30544 states and 41899 transitions. [2020-10-28 00:24:18,078 INFO L78 Accepts]: Start accepts. Automaton has 30544 states and 41899 transitions. Word has length 90 [2020-10-28 00:24:18,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:24:18,078 INFO L481 AbstractCegarLoop]: Abstraction has 30544 states and 41899 transitions. [2020-10-28 00:24:18,078 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 00:24:18,078 INFO L276 IsEmpty]: Start isEmpty. Operand 30544 states and 41899 transitions. [2020-10-28 00:24:18,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-28 00:24:18,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:24:18,093 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:24:18,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 00:24:18,093 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:24:18,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:24:18,094 INFO L82 PathProgramCache]: Analyzing trace with hash -516984039, now seen corresponding path program 1 times [2020-10-28 00:24:18,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:24:18,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2061504461] [2020-10-28 00:24:18,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:24:18,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:24:18,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:18,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:18,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:18,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:18,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:19,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:19,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:19,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:19,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:19,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:19,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:23,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:24:23,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-28 00:24:23,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 00:24:23,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 00:24:23,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:24:23,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 00:24:23,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-28 00:24:23,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-28 00:24:23,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:24:23,597 WARN L193 SmtUtils]: Spent 262.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2020-10-28 00:24:23,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:24:23,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:24:23,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:24:23,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:24:23,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:24:23,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:24:23,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 00:24:23,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:24:23,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:24:23,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:24:23,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:24:23,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:24:23,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:24:23,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2061504461] [2020-10-28 00:24:23,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:24:23,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-28 00:24:23,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87293620] [2020-10-28 00:24:23,638 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 00:24:23,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:24:23,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 00:24:23,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-28 00:24:23,639 INFO L87 Difference]: Start difference. First operand 30544 states and 41899 transitions. Second operand 11 states. [2020-10-28 00:24:24,130 WARN L193 SmtUtils]: Spent 383.00 ms on a formula simplification that was a NOOP. DAG size: 181 [2020-10-28 00:24:28,689 WARN L193 SmtUtils]: Spent 283.00 ms on a formula simplification that was a NOOP. DAG size: 180