/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.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 00:12:55,964 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 00:12:55,967 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 00:12:56,006 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 00:12:56,007 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 00:12:56,008 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 00:12:56,010 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 00:12:56,013 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 00:12:56,015 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 00:12:56,016 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 00:12:56,017 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 00:12:56,019 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 00:12:56,019 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 00:12:56,020 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 00:12:56,022 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 00:12:56,023 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 00:12:56,024 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 00:12:56,025 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 00:12:56,041 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 00:12:56,043 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 00:12:56,045 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 00:12:56,047 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 00:12:56,048 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 00:12:56,049 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 00:12:56,053 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 00:12:56,053 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 00:12:56,053 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 00:12:56,054 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 00:12:56,055 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 00:12:56,056 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 00:12:56,057 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 00:12:56,058 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 00:12:56,059 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 00:12:56,059 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 00:12:56,061 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 00:12:56,061 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 00:12:56,062 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 00:12:56,062 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 00:12:56,063 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 00:12:56,064 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 00:12:56,065 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 00:12:56,066 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 00:12:56,095 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 00:12:56,095 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 00:12:56,097 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 00:12:56,097 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 00:12:56,097 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 00:12:56,098 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 00:12:56,098 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 00:12:56,098 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 00:12:56,098 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 00:12:56,098 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 00:12:56,099 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 00:12:56,099 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 00:12:56,099 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 00:12:56,099 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 00:12:56,100 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 00:12:56,100 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 00:12:56,100 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 00:12:56,100 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 00:12:56,101 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 00:12:56,101 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 00:12:56,101 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 00:12:56,101 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 00:12:56,102 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 00:12:56,102 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 00:12:56,102 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 00:12:56,102 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 00:12:56,102 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 00:12:56,103 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 00:12:56,103 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 00:12:56,103 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-28 00:12:56,495 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 00:12:56,537 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 00:12:56,541 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 00:12:56,543 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 00:12:56,544 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 00:12:56,546 INFO L432 ainManager$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.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-28 00:12:56,633 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0f8b99872/81229432ea104bdd86f4516e5ac5a3e0/FLAGdf05fcc06 [2020-10-28 00:12:57,483 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 00:12:57,484 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-28 00:12:57,511 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0f8b99872/81229432ea104bdd86f4516e5ac5a3e0/FLAGdf05fcc06 [2020-10-28 00:12:57,548 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0f8b99872/81229432ea104bdd86f4516e5ac5a3e0 [2020-10-28 00:12:57,551 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 00:12:57,558 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 00:12:57,560 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 00:12:57,561 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 00:12:57,565 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 00:12:57,566 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:12:57" (1/1) ... [2020-10-28 00:12:57,578 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30323cfd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:12:57, skipping insertion in model container [2020-10-28 00:12:57,578 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:12:57" (1/1) ... [2020-10-28 00:12:57,588 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 00:12:57,719 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 00:12:58,676 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 00:12:58,700 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 00:12:59,002 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 00:12:59,035 INFO L208 MainTranslator]: Completed translation [2020-10-28 00:12:59,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:12:59 WrapperNode [2020-10-28 00:12:59,037 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 00:12:59,038 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 00:12:59,038 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 00:12:59,038 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 00:12:59,057 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:12:59" (1/1) ... [2020-10-28 00:12:59,059 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:12:59" (1/1) ... [2020-10-28 00:12:59,116 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:12:59" (1/1) ... [2020-10-28 00:12:59,116 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:12:59" (1/1) ... [2020-10-28 00:12:59,195 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:12:59" (1/1) ... [2020-10-28 00:12:59,229 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:12:59" (1/1) ... [2020-10-28 00:12:59,244 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:12:59" (1/1) ... [2020-10-28 00:12:59,265 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 00:12:59,266 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 00:12:59,266 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 00:12:59,266 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 00:12:59,268 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:12:59" (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 00:12:59,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 00:12:59,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 00:12:59,358 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 00:12:59,358 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 00:12:59,359 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 00:12:59,360 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 00:12:59,360 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 00:12:59,361 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 00:12:59,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 00:12:59,361 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 00:12:59,362 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 00:12:59,363 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-28 00:12:59,363 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 00:12:59,363 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 00:12:59,363 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 00:12:59,364 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 00:12:59,364 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 00:12:59,364 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 00:12:59,365 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 00:12:59,365 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-10-28 00:12:59,365 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 00:12:59,365 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 00:12:59,365 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 00:12:59,365 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 00:12:59,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 00:12:59,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 00:12:59,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 00:12:59,366 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 00:12:59,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 00:13:02,319 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 00:13:02,320 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 00:13:02,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:13:02 BoogieIcfgContainer [2020-10-28 00:13:02,323 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 00:13:02,328 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 00:13:02,328 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 00:13:02,332 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 00:13:02,332 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:12:57" (1/3) ... [2020-10-28 00:13:02,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cf50e66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:13:02, skipping insertion in model container [2020-10-28 00:13:02,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:12:59" (2/3) ... [2020-10-28 00:13:02,334 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7cf50e66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:13:02, skipping insertion in model container [2020-10-28 00:13:02,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:13:02" (3/3) ... [2020-10-28 00:13:02,336 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-28 00:13:02,349 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 00:13:02,356 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 00:13:02,369 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 00:13:02,405 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 00:13:02,405 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 00:13:02,405 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 00:13:02,405 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 00:13:02,405 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 00:13:02,406 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 00:13:02,406 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 00:13:02,406 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 00:13:02,441 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states. [2020-10-28 00:13:02,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-28 00:13:02,473 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:13:02,475 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:13:02,476 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:13:02,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:13:02,494 INFO L82 PathProgramCache]: Analyzing trace with hash -2073257526, now seen corresponding path program 1 times [2020-10-28 00:13:02,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:13:02,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1344810060] [2020-10-28 00:13:02,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:13:02,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:13:02,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:13:03,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:13:03,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:13:03,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:13:04,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:13:05,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:13:07,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:13:07,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:13:07,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 00:13:07,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 00:13:07,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-28 00:13:07,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:13:07,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:13:07,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-28 00:13:07,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 00:13:07,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 00:13:08,935 WARN L193 SmtUtils]: Spent 833.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-28 00:13:08,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:13:08,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:13:08,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:13:08,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:13:08,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:13:08,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:13:08,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 00:13:08,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:13:08,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:13:08,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:13:08,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:13:08,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:13:09,017 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 00:13:09,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1344810060] [2020-10-28 00:13:09,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:13:09,020 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:13:09,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014866222] [2020-10-28 00:13:09,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:13:09,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:13:09,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:13:09,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:13:09,050 INFO L87 Difference]: Start difference. First operand 711 states. Second operand 4 states. [2020-10-28 00:13:09,982 WARN L193 SmtUtils]: Spent 802.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-28 00:13:15,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:13:15,541 INFO L93 Difference]: Finished difference Result 1075 states and 1865 transitions. [2020-10-28 00:13:15,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:13:15,544 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-10-28 00:13:15,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:13:15,584 INFO L225 Difference]: With dead ends: 1075 [2020-10-28 00:13:15,584 INFO L226 Difference]: Without dead ends: 847 [2020-10-28 00:13:15,592 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:13:15,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2020-10-28 00:13:15,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 844. [2020-10-28 00:13:15,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 844 states. [2020-10-28 00:13:15,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 1155 transitions. [2020-10-28 00:13:15,756 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 1155 transitions. Word has length 67 [2020-10-28 00:13:15,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:13:15,758 INFO L481 AbstractCegarLoop]: Abstraction has 844 states and 1155 transitions. [2020-10-28 00:13:15,759 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:13:15,759 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 1155 transitions. [2020-10-28 00:13:15,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-28 00:13:15,770 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:13:15,770 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] [2020-10-28 00:13:15,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 00:13:15,771 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:13:15,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:13:15,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1688312785, now seen corresponding path program 1 times [2020-10-28 00:13:15,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:13:15,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1817775562] [2020-10-28 00:13:15,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:13:15,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:13:15,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:13:15,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:13:15,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:13:16,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:13:16,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:13:17,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:13:17,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:13:18,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:13:18,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:13:19,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:13:19,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:13:20,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:13:20,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:13:20,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:13:20,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 00:13:20,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 00:13:20,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 00:13:20,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:13:20,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:13:20,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-28 00:13:20,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 00:13:20,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 00:13:21,748 WARN L193 SmtUtils]: Spent 779.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-28 00:13:21,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:13:21,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:13:21,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:13:21,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:13:21,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:13:21,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:13:21,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 00:13:21,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:13:21,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:13:21,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:13:21,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:13:21,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:13:21,810 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 00:13:21,810 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1817775562] [2020-10-28 00:13:21,810 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:13:21,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:13:21,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968194653] [2020-10-28 00:13:21,814 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:13:21,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:13:21,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:13:21,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:13:21,815 INFO L87 Difference]: Start difference. First operand 844 states and 1155 transitions. Second operand 4 states. [2020-10-28 00:13:22,683 WARN L193 SmtUtils]: Spent 812.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-28 00:13:27,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:13:27,338 INFO L93 Difference]: Finished difference Result 1465 states and 2029 transitions. [2020-10-28 00:13:27,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:13:27,339 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2020-10-28 00:13:27,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:13:27,347 INFO L225 Difference]: With dead ends: 1465 [2020-10-28 00:13:27,347 INFO L226 Difference]: Without dead ends: 1225 [2020-10-28 00:13:27,350 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:13:27,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1225 states. [2020-10-28 00:13:27,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1225 to 1221. [2020-10-28 00:13:27,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1221 states. [2020-10-28 00:13:27,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1221 states to 1221 states and 1657 transitions. [2020-10-28 00:13:27,423 INFO L78 Accepts]: Start accepts. Automaton has 1221 states and 1657 transitions. Word has length 68 [2020-10-28 00:13:27,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:13:27,424 INFO L481 AbstractCegarLoop]: Abstraction has 1221 states and 1657 transitions. [2020-10-28 00:13:27,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:13:27,424 INFO L276 IsEmpty]: Start isEmpty. Operand 1221 states and 1657 transitions. [2020-10-28 00:13:27,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-28 00:13:27,428 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:13:27,428 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] [2020-10-28 00:13:27,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 00:13:27,429 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:13:27,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:13:27,429 INFO L82 PathProgramCache]: Analyzing trace with hash -1637171391, now seen corresponding path program 1 times [2020-10-28 00:13:27,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:13:27,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [972461498] [2020-10-28 00:13:27,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:13:27,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:13:27,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:13:27,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:13:27,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:13:27,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:13:28,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:13:28,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:13:29,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:13:29,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:13:29,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:13:30,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:13:30,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:13:32,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:13:32,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 00:13:32,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 00:13:32,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 00:13:32,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:13:32,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:13:32,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-28 00:13:32,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 00:13:32,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:13:33,303 WARN L193 SmtUtils]: Spent 752.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-28 00:13:33,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:13:33,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:13:33,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:13:33,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:13:33,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:13:33,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:13:33,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 00:13:33,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:13:33,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:13:33,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:13:33,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:13:33,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:13:33,357 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 00:13:33,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [972461498] [2020-10-28 00:13:33,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:13:33,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:13:33,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619815869] [2020-10-28 00:13:33,358 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:13:33,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:13:33,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:13:33,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:13:33,360 INFO L87 Difference]: Start difference. First operand 1221 states and 1657 transitions. Second operand 4 states. [2020-10-28 00:13:34,201 WARN L193 SmtUtils]: Spent 786.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-28 00:13:38,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:13:38,515 INFO L93 Difference]: Finished difference Result 2219 states and 3121 transitions. [2020-10-28 00:13:38,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:13:38,516 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2020-10-28 00:13:38,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:13:38,525 INFO L225 Difference]: With dead ends: 2219 [2020-10-28 00:13:38,525 INFO L226 Difference]: Without dead ends: 1688 [2020-10-28 00:13:38,528 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:13:38,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1688 states. [2020-10-28 00:13:38,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1688 to 1684. [2020-10-28 00:13:38,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1684 states. [2020-10-28 00:13:38,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1684 states to 1684 states and 2319 transitions. [2020-10-28 00:13:38,631 INFO L78 Accepts]: Start accepts. Automaton has 1684 states and 2319 transitions. Word has length 68 [2020-10-28 00:13:38,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:13:38,631 INFO L481 AbstractCegarLoop]: Abstraction has 1684 states and 2319 transitions. [2020-10-28 00:13:38,631 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:13:38,631 INFO L276 IsEmpty]: Start isEmpty. Operand 1684 states and 2319 transitions. [2020-10-28 00:13:38,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-28 00:13:38,637 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:13:38,637 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] [2020-10-28 00:13:38,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 00:13:38,639 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:13:38,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:13:38,639 INFO L82 PathProgramCache]: Analyzing trace with hash -864829432, now seen corresponding path program 1 times [2020-10-28 00:13:38,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:13:38,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2080078891] [2020-10-28 00:13:38,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:13:38,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:13:38,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:13:38,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:13:38,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:13:39,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:13:39,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:13:39,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:13:40,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:13:41,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:13:41,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:13:41,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:13:42,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:13:43,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:13:43,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:13:43,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:13:43,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 00:13:43,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 00:13:43,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 00:13:43,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:13:43,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 00:13:43,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-28 00:13:43,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 00:13:43,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:13:44,583 WARN L193 SmtUtils]: Spent 758.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-28 00:13:44,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:13:44,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:13:44,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:13:44,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:13:44,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:13:44,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:13:44,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 00:13:44,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:13:44,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:13:44,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:13:44,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:13:44,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:13:44,637 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 00:13:44,637 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2080078891] [2020-10-28 00:13:44,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:13:44,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 00:13:44,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878942932] [2020-10-28 00:13:44,638 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 00:13:44,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:13:44,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 00:13:44,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:13:44,639 INFO L87 Difference]: Start difference. First operand 1684 states and 2319 transitions. Second operand 6 states. [2020-10-28 00:13:49,510 WARN L193 SmtUtils]: Spent 791.00 ms on a formula simplification that was a NOOP. DAG size: 333 [2020-10-28 00:13:51,162 WARN L193 SmtUtils]: Spent 813.00 ms on a formula simplification that was a NOOP. DAG size: 332 [2020-10-28 00:13:51,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:13:51,291 INFO L93 Difference]: Finished difference Result 4531 states and 6600 transitions. [2020-10-28 00:13:51,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 00:13:51,292 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 68 [2020-10-28 00:13:51,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:13:51,315 INFO L225 Difference]: With dead ends: 4531 [2020-10-28 00:13:51,316 INFO L226 Difference]: Without dead ends: 3853 [2020-10-28 00:13:51,320 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 00:13:51,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3853 states. [2020-10-28 00:13:51,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3853 to 1696. [2020-10-28 00:13:51,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1696 states. [2020-10-28 00:13:51,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1696 states to 1696 states and 2327 transitions. [2020-10-28 00:13:51,448 INFO L78 Accepts]: Start accepts. Automaton has 1696 states and 2327 transitions. Word has length 68 [2020-10-28 00:13:51,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:13:51,449 INFO L481 AbstractCegarLoop]: Abstraction has 1696 states and 2327 transitions. [2020-10-28 00:13:51,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 00:13:51,449 INFO L276 IsEmpty]: Start isEmpty. Operand 1696 states and 2327 transitions. [2020-10-28 00:13:51,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-28 00:13:51,453 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:13:51,453 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] [2020-10-28 00:13:51,453 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 00:13:51,453 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:13:51,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:13:51,454 INFO L82 PathProgramCache]: Analyzing trace with hash 227308761, now seen corresponding path program 1 times [2020-10-28 00:13:51,454 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:13:51,454 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2010734593] [2020-10-28 00:13:51,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:13:51,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:13:51,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:13:51,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:13:51,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:13:51,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:13:51,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:13:53,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:13:53,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:13:55,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:13:55,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:13:56,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:13:56,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 00:13:56,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-28 00:13:56,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 00:13:56,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:13:56,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 00:13:56,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-28 00:13:56,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 00:13:56,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:13:57,429 WARN L193 SmtUtils]: Spent 821.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-28 00:13:57,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:13:57,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:13:57,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:13:57,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:13:57,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:13:57,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:13:57,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 00:13:57,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:13:57,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:13:57,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:13:57,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:13:57,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:13:57,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:13:57,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2010734593] [2020-10-28 00:13:57,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:13:57,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 00:13:57,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095705828] [2020-10-28 00:13:57,485 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 00:13:57,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:13:57,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 00:13:57,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:13:57,485 INFO L87 Difference]: Start difference. First operand 1696 states and 2327 transitions. Second operand 6 states. [2020-10-28 00:14:02,341 WARN L193 SmtUtils]: Spent 813.00 ms on a formula simplification that was a NOOP. DAG size: 333 [2020-10-28 00:14:03,976 WARN L193 SmtUtils]: Spent 821.00 ms on a formula simplification that was a NOOP. DAG size: 332 [2020-10-28 00:14:04,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:14:04,117 INFO L93 Difference]: Finished difference Result 4246 states and 6085 transitions. [2020-10-28 00:14:04,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 00:14:04,117 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 69 [2020-10-28 00:14:04,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:14:04,135 INFO L225 Difference]: With dead ends: 4246 [2020-10-28 00:14:04,135 INFO L226 Difference]: Without dead ends: 3492 [2020-10-28 00:14:04,139 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 00:14:04,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3492 states. [2020-10-28 00:14:04,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3492 to 1712. [2020-10-28 00:14:04,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1712 states. [2020-10-28 00:14:04,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1712 states to 1712 states and 2335 transitions. [2020-10-28 00:14:04,250 INFO L78 Accepts]: Start accepts. Automaton has 1712 states and 2335 transitions. Word has length 69 [2020-10-28 00:14:04,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:14:04,250 INFO L481 AbstractCegarLoop]: Abstraction has 1712 states and 2335 transitions. [2020-10-28 00:14:04,250 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 00:14:04,250 INFO L276 IsEmpty]: Start isEmpty. Operand 1712 states and 2335 transitions. [2020-10-28 00:14:04,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-28 00:14:04,254 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:14:04,255 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] [2020-10-28 00:14:04,255 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 00:14:04,255 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:14:04,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:14:04,256 INFO L82 PathProgramCache]: Analyzing trace with hash -1335239324, now seen corresponding path program 1 times [2020-10-28 00:14:04,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:14:04,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [964827953] [2020-10-28 00:14:04,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:14:04,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:14:04,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:14:04,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:14:04,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:14:04,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:14:04,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:14:04,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:14:07,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:14:08,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:14:08,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:14:08,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:14:08,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:14:09,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:14:09,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:14:09,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-28 00:14:09,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 00:14:09,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-28 00:14:09,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:14:09,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 00:14:09,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-28 00:14:09,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 00:14:09,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:14:10,324 WARN L193 SmtUtils]: Spent 774.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-28 00:14:10,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:14:10,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:14:10,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:14:10,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:14:10,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:14:10,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:14:10,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 00:14:10,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:14:10,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:14:10,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:14:10,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:14:10,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:14:10,379 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 00:14:10,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [964827953] [2020-10-28 00:14:10,380 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:14:10,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 00:14:10,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411728458] [2020-10-28 00:14:10,381 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 00:14:10,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:14:10,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 00:14:10,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-28 00:14:10,382 INFO L87 Difference]: Start difference. First operand 1712 states and 2335 transitions. Second operand 10 states. [2020-10-28 00:14:11,304 WARN L193 SmtUtils]: Spent 823.00 ms on a formula simplification that was a NOOP. DAG size: 339 [2020-10-28 00:14:16,963 WARN L193 SmtUtils]: Spent 802.00 ms on a formula simplification that was a NOOP. DAG size: 333 [2020-10-28 00:14:18,583 WARN L193 SmtUtils]: Spent 796.00 ms on a formula simplification that was a NOOP. DAG size: 332 [2020-10-28 00:14:18,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:14:18,774 INFO L93 Difference]: Finished difference Result 5178 states and 7345 transitions. [2020-10-28 00:14:18,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 00:14:18,775 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 70 [2020-10-28 00:14:18,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:14:18,793 INFO L225 Difference]: With dead ends: 5178 [2020-10-28 00:14:18,794 INFO L226 Difference]: Without dead ends: 4527 [2020-10-28 00:14:18,798 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2020-10-28 00:14:18,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4527 states. [2020-10-28 00:14:18,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4527 to 2082. [2020-10-28 00:14:18,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2082 states. [2020-10-28 00:14:18,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2082 states to 2082 states and 2789 transitions. [2020-10-28 00:14:18,958 INFO L78 Accepts]: Start accepts. Automaton has 2082 states and 2789 transitions. Word has length 70 [2020-10-28 00:14:18,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:14:18,958 INFO L481 AbstractCegarLoop]: Abstraction has 2082 states and 2789 transitions. [2020-10-28 00:14:18,958 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 00:14:18,959 INFO L276 IsEmpty]: Start isEmpty. Operand 2082 states and 2789 transitions. [2020-10-28 00:14:18,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-28 00:14:18,964 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:14:18,964 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] [2020-10-28 00:14:18,964 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 00:14:18,964 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:14:18,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:14:18,965 INFO L82 PathProgramCache]: Analyzing trace with hash 960906770, now seen corresponding path program 1 times [2020-10-28 00:14:18,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:14:18,965 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1345345715] [2020-10-28 00:14:18,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:14:19,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:14:19,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:14:19,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:14:19,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:14:19,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:14:19,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:14:19,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:14:20,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:14:20,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:14:21,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:14:22,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:14:24,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:14:24,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-28 00:14:24,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 00:14:24,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-28 00:14:24,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:14:24,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 00:14:24,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-28 00:14:24,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-28 00:14:24,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:14:24,929 WARN L193 SmtUtils]: Spent 810.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-28 00:14:24,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:14:24,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:14:24,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:14:24,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:14:24,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:14:24,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:14:24,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 00:14:24,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:14:24,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:14:24,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:14:24,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:14:24,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:14:24,978 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 00:14:24,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1345345715] [2020-10-28 00:14:24,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:14:24,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 00:14:24,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992984272] [2020-10-28 00:14:24,980 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 00:14:24,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:14:24,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 00:14:24,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:14:24,981 INFO L87 Difference]: Start difference. First operand 2082 states and 2789 transitions. Second operand 6 states. [2020-10-28 00:14:25,875 WARN L193 SmtUtils]: Spent 822.00 ms on a formula simplification that was a NOOP. DAG size: 332 [2020-10-28 00:14:31,323 WARN L193 SmtUtils]: Spent 857.00 ms on a formula simplification that was a NOOP. DAG size: 333 [2020-10-28 00:14:32,579 WARN L193 SmtUtils]: Spent 825.00 ms on a formula simplification that was a NOOP. DAG size: 332 [2020-10-28 00:14:34,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:14:34,185 INFO L93 Difference]: Finished difference Result 8502 states and 11915 transitions. [2020-10-28 00:14:34,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 00:14:34,185 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 70 [2020-10-28 00:14:34,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:14:34,213 INFO L225 Difference]: With dead ends: 8502 [2020-10-28 00:14:34,213 INFO L226 Difference]: Without dead ends: 6916 [2020-10-28 00:14:34,217 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-28 00:14:34,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6916 states. [2020-10-28 00:14:34,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6916 to 4402. [2020-10-28 00:14:34,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4402 states. [2020-10-28 00:14:34,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4402 states to 4402 states and 6087 transitions. [2020-10-28 00:14:34,547 INFO L78 Accepts]: Start accepts. Automaton has 4402 states and 6087 transitions. Word has length 70 [2020-10-28 00:14:34,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:14:34,547 INFO L481 AbstractCegarLoop]: Abstraction has 4402 states and 6087 transitions. [2020-10-28 00:14:34,547 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 00:14:34,548 INFO L276 IsEmpty]: Start isEmpty. Operand 4402 states and 6087 transitions. [2020-10-28 00:14:34,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-28 00:14:34,555 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:14:34,555 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] [2020-10-28 00:14:34,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 00:14:34,556 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:14:34,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:14:34,556 INFO L82 PathProgramCache]: Analyzing trace with hash 1321597758, now seen corresponding path program 1 times [2020-10-28 00:14:34,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:14:34,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [905858139] [2020-10-28 00:14:34,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:14:34,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:14:34,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:14:34,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:14:34,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:14:34,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:14:34,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:14:35,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:14:39,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:14:39,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-28 00:14:39,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 00:14:39,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 00:14:39,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:14:39,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 00:14:39,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-28 00:14:39,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 00:14:39,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:14:40,480 WARN L193 SmtUtils]: Spent 801.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-28 00:14:40,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:14:40,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:14:40,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:14:40,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:14:40,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:14:40,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:14:40,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 00:14:40,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:14:40,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:14:40,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:14:40,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:14:40,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:14:40,522 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 00:14:40,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [905858139] [2020-10-28 00:14:40,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:14:40,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 00:14:40,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125990297] [2020-10-28 00:14:40,524 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 00:14:40,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:14:40,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 00:14:40,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-28 00:14:40,525 INFO L87 Difference]: Start difference. First operand 4402 states and 6087 transitions. Second operand 7 states. [2020-10-28 00:14:41,458 WARN L193 SmtUtils]: Spent 845.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-28 00:14:46,220 WARN L193 SmtUtils]: Spent 842.00 ms on a formula simplification that was a NOOP. DAG size: 337 [2020-10-28 00:14:47,206 WARN L193 SmtUtils]: Spent 820.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-28 00:14:48,126 WARN L193 SmtUtils]: Spent 797.00 ms on a formula simplification that was a NOOP. DAG size: 332 [2020-10-28 00:14:49,168 WARN L193 SmtUtils]: Spent 762.00 ms on a formula simplification that was a NOOP. DAG size: 333 [2020-10-28 00:14:51,256 WARN L193 SmtUtils]: Spent 768.00 ms on a formula simplification that was a NOOP. DAG size: 333 [2020-10-28 00:14:52,145 WARN L193 SmtUtils]: Spent 855.00 ms on a formula simplification that was a NOOP. DAG size: 334 [2020-10-28 00:14:53,027 WARN L193 SmtUtils]: Spent 757.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-28 00:14:54,450 WARN L193 SmtUtils]: Spent 866.00 ms on a formula simplification that was a NOOP. DAG size: 336 [2020-10-28 00:14:54,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:14:54,613 INFO L93 Difference]: Finished difference Result 25264 states and 36298 transitions. [2020-10-28 00:14:54,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-28 00:14:54,614 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 71 [2020-10-28 00:14:54,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:14:54,679 INFO L225 Difference]: With dead ends: 25264 [2020-10-28 00:14:54,679 INFO L226 Difference]: Without dead ends: 21170 [2020-10-28 00:14:54,693 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=133, Invalid=329, Unknown=0, NotChecked=0, Total=462 [2020-10-28 00:14:54,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21170 states. [2020-10-28 00:14:56,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21170 to 15955. [2020-10-28 00:14:56,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15955 states. [2020-10-28 00:14:56,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15955 states to 15955 states and 22739 transitions. [2020-10-28 00:14:56,068 INFO L78 Accepts]: Start accepts. Automaton has 15955 states and 22739 transitions. Word has length 71 [2020-10-28 00:14:56,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:14:56,069 INFO L481 AbstractCegarLoop]: Abstraction has 15955 states and 22739 transitions. [2020-10-28 00:14:56,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 00:14:56,069 INFO L276 IsEmpty]: Start isEmpty. Operand 15955 states and 22739 transitions. [2020-10-28 00:14:56,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-28 00:14:56,083 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:14:56,083 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] [2020-10-28 00:14:56,083 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 00:14:56,084 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:14:56,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:14:56,084 INFO L82 PathProgramCache]: Analyzing trace with hash -943879340, now seen corresponding path program 1 times [2020-10-28 00:14:56,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:14:56,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [491652738] [2020-10-28 00:14:56,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:14:56,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:14:56,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:14:56,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:14:56,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:14:56,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:14:56,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:14:56,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:14:57,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:14:57,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:14:57,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:14:58,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:14:58,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:15:01,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:15:01,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-28 00:15:01,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 00:15:01,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 00:15:01,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:15:01,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:15:01,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-28 00:15:01,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 00:15:01,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:15:01,931 WARN L193 SmtUtils]: Spent 752.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-28 00:15:01,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:15:01,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:15:01,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:15:01,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:15:01,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:15:01,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:15:01,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 00:15:01,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:15:01,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:15:01,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:15:01,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:15:01,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 00:15:01,994 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 00:15:01,994 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [491652738] [2020-10-28 00:15:01,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:15:01,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:15:01,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848283351] [2020-10-28 00:15:01,995 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:15:01,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:15:01,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:15:01,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:15:01,996 INFO L87 Difference]: Start difference. First operand 15955 states and 22739 transitions. Second operand 4 states. [2020-10-28 00:15:02,832 WARN L193 SmtUtils]: Spent 781.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-28 00:15:08,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:15:08,068 INFO L93 Difference]: Finished difference Result 40013 states and 57863 transitions. [2020-10-28 00:15:08,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:15:08,068 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2020-10-28 00:15:08,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:15:08,148 INFO L225 Difference]: With dead ends: 40013 [2020-10-28 00:15:08,148 INFO L226 Difference]: Without dead ends: 27249 [2020-10-28 00:15:08,186 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:15:08,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27249 states. [2020-10-28 00:15:10,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27249 to 27146. [2020-10-28 00:15:10,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27146 states. [2020-10-28 00:15:10,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27146 states to 27146 states and 38673 transitions. [2020-10-28 00:15:10,184 INFO L78 Accepts]: Start accepts. Automaton has 27146 states and 38673 transitions. Word has length 71 [2020-10-28 00:15:10,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:15:10,184 INFO L481 AbstractCegarLoop]: Abstraction has 27146 states and 38673 transitions. [2020-10-28 00:15:10,184 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:15:10,184 INFO L276 IsEmpty]: Start isEmpty. Operand 27146 states and 38673 transitions. [2020-10-28 00:15:10,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-28 00:15:10,202 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:15:10,202 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] [2020-10-28 00:15:10,202 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 00:15:10,202 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:15:10,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:15:10,203 INFO L82 PathProgramCache]: Analyzing trace with hash -836519980, now seen corresponding path program 1 times [2020-10-28 00:15:10,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:15:10,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1299338832] [2020-10-28 00:15:10,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:15:10,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:15:10,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:15:10,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:15:10,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:15:10,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:15:11,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:15:11,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:15:11,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:15:11,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:15:12,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:15:13,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:15:15,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:15:15,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-28 00:15:15,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-28 00:15:15,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-28 00:15:15,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:15:15,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 00:15:15,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-28 00:15:15,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 00:15:15,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:15:16,097 WARN L193 SmtUtils]: Spent 780.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-28 00:15:16,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:15:16,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:15:16,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:15:16,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:15:16,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:15:16,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:15:16,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 00:15:16,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:15:16,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:15:16,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:15:16,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:15:16,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:15:16,141 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 00:15:16,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1299338832] [2020-10-28 00:15:16,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:15:16,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 00:15:16,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241298281] [2020-10-28 00:15:16,142 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 00:15:16,143 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:15:16,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 00:15:16,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-28 00:15:16,143 INFO L87 Difference]: Start difference. First operand 27146 states and 38673 transitions. Second operand 7 states. [2020-10-28 00:15:17,145 WARN L193 SmtUtils]: Spent 925.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-28 00:15:21,603 WARN L193 SmtUtils]: Spent 853.00 ms on a formula simplification that was a NOOP. DAG size: 337 [2020-10-28 00:15:22,589 WARN L193 SmtUtils]: Spent 829.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-28 00:15:23,657 WARN L193 SmtUtils]: Spent 923.00 ms on a formula simplification that was a NOOP. DAG size: 332 [2020-10-28 00:15:24,681 WARN L193 SmtUtils]: Spent 828.00 ms on a formula simplification that was a NOOP. DAG size: 333 [2020-10-28 00:15:27,493 WARN L193 SmtUtils]: Spent 947.00 ms on a formula simplification that was a NOOP. DAG size: 333 [2020-10-28 00:15:28,630 WARN L193 SmtUtils]: Spent 786.00 ms on a formula simplification that was a NOOP. DAG size: 334 [2020-10-28 00:15:29,669 WARN L193 SmtUtils]: Spent 762.00 ms on a formula simplification that was a NOOP. DAG size: 335 [2020-10-28 00:15:32,307 WARN L193 SmtUtils]: Spent 797.00 ms on a formula simplification that was a NOOP. DAG size: 336 [2020-10-28 00:15:32,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:15:32,961 INFO L93 Difference]: Finished difference Result 74531 states and 107612 transitions. [2020-10-28 00:15:32,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-28 00:15:32,962 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 71 [2020-10-28 00:15:32,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:15:33,117 INFO L225 Difference]: With dead ends: 74531 [2020-10-28 00:15:33,117 INFO L226 Difference]: Without dead ends: 59593 [2020-10-28 00:15:33,156 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=133, Invalid=329, Unknown=0, NotChecked=0, Total=462 [2020-10-28 00:15:33,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59593 states. [2020-10-28 00:15:36,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59593 to 35261. [2020-10-28 00:15:36,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35261 states. [2020-10-28 00:15:36,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35261 states to 35261 states and 50607 transitions. [2020-10-28 00:15:36,233 INFO L78 Accepts]: Start accepts. Automaton has 35261 states and 50607 transitions. Word has length 71 [2020-10-28 00:15:36,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:15:36,233 INFO L481 AbstractCegarLoop]: Abstraction has 35261 states and 50607 transitions. [2020-10-28 00:15:36,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 00:15:36,233 INFO L276 IsEmpty]: Start isEmpty. Operand 35261 states and 50607 transitions. [2020-10-28 00:15:36,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-28 00:15:36,245 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:15:36,245 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] [2020-10-28 00:15:36,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 00:15:36,246 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:15:36,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:15:36,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1057908116, now seen corresponding path program 1 times [2020-10-28 00:15:36,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:15:36,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1173998473] [2020-10-28 00:15:36,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:15:36,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:15:36,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:15:36,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:15:36,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:15:36,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:15:37,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:15:37,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:15:37,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:15:37,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:15:37,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:15:37,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:15:38,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:15:38,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:15:41,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:15:41,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-28 00:15:41,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 00:15:41,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 00:15:41,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:15:41,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 00:15:41,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-28 00:15:41,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-28 00:15:41,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:15:42,221 WARN L193 SmtUtils]: Spent 871.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-28 00:15:42,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:15:42,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:15:42,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:15:42,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:15:42,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:15:42,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:15:42,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 00:15:42,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:15:42,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:15:42,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:15:42,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:15:42,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:15:42,272 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 00:15:42,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1173998473] [2020-10-28 00:15:42,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:15:42,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 00:15:42,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513629369] [2020-10-28 00:15:42,273 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 00:15:42,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:15:42,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 00:15:42,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:15:42,274 INFO L87 Difference]: Start difference. First operand 35261 states and 50607 transitions. Second operand 6 states. [2020-10-28 00:15:43,165 WARN L193 SmtUtils]: Spent 813.00 ms on a formula simplification that was a NOOP. DAG size: 332 [2020-10-28 00:15:47,956 WARN L193 SmtUtils]: Spent 804.00 ms on a formula simplification that was a NOOP. DAG size: 333 [2020-10-28 00:15:49,016 WARN L193 SmtUtils]: Spent 786.00 ms on a formula simplification that was a NOOP. DAG size: 332 [2020-10-28 00:16:00,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:16:00,288 INFO L93 Difference]: Finished difference Result 172077 states and 249970 transitions. [2020-10-28 00:16:00,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 00:16:00,289 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 72 [2020-10-28 00:16:00,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:16:00,788 INFO L225 Difference]: With dead ends: 172077 [2020-10-28 00:16:00,789 INFO L226 Difference]: Without dead ends: 144402 [2020-10-28 00:16:00,871 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-28 00:16:01,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144402 states. [2020-10-28 00:16:07,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144402 to 75140. [2020-10-28 00:16:07,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75140 states. [2020-10-28 00:16:07,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75140 states to 75140 states and 108172 transitions. [2020-10-28 00:16:07,525 INFO L78 Accepts]: Start accepts. Automaton has 75140 states and 108172 transitions. Word has length 72 [2020-10-28 00:16:07,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:16:07,525 INFO L481 AbstractCegarLoop]: Abstraction has 75140 states and 108172 transitions. [2020-10-28 00:16:07,525 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 00:16:07,525 INFO L276 IsEmpty]: Start isEmpty. Operand 75140 states and 108172 transitions. [2020-10-28 00:16:07,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-28 00:16:07,712 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:16:07,713 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] [2020-10-28 00:16:07,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 00:16:07,713 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:16:07,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:16:07,714 INFO L82 PathProgramCache]: Analyzing trace with hash -1053444128, now seen corresponding path program 1 times [2020-10-28 00:16:07,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:16:07,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1804492567] [2020-10-28 00:16:07,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:16:07,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:16:07,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:16:07,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:16:07,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:16:07,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:16:08,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:16:08,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:16:08,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:16:08,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:16:09,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:16:09,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:16:10,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:16:10,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:16:10,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:16:12,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:16:12,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-28 00:16:12,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 00:16:12,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 00:16:12,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:16:12,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 00:16:12,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 00:16:12,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-28 00:16:12,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:16:13,855 WARN L193 SmtUtils]: Spent 760.00 ms on a formula simplification that was a NOOP. DAG size: 331 [2020-10-28 00:16:13,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:16:13,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:16:13,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:16:13,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:16:13,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:16:13,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:16:13,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 00:16:13,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:16:13,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:16:13,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:16:13,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:16:13,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:16:13,904 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 00:16:13,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1804492567] [2020-10-28 00:16:13,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:16:13,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-28 00:16:13,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416966329] [2020-10-28 00:16:13,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 00:16:13,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:16:13,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 00:16:13,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-10-28 00:16:13,906 INFO L87 Difference]: Start difference. First operand 75140 states and 108172 transitions. Second operand 12 states. [2020-10-28 00:16:14,778 WARN L193 SmtUtils]: Spent 784.00 ms on a formula simplification that was a NOOP. DAG size: 332 [2020-10-28 00:16:21,830 WARN L193 SmtUtils]: Spent 810.00 ms on a formula simplification that was a NOOP. DAG size: 334 [2020-10-28 00:16:22,788 WARN L193 SmtUtils]: Spent 809.00 ms on a formula simplification that was a NOOP. DAG size: 346