/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.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 00:05:28,280 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 00:05:28,284 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 00:05:28,341 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 00:05:28,342 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 00:05:28,349 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 00:05:28,351 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 00:05:28,356 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 00:05:28,360 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 00:05:28,367 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 00:05:28,368 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 00:05:28,370 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 00:05:28,370 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 00:05:28,373 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 00:05:28,375 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 00:05:28,377 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 00:05:28,378 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 00:05:28,381 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 00:05:28,388 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 00:05:28,397 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 00:05:28,399 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 00:05:28,401 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 00:05:28,403 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 00:05:28,406 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 00:05:28,414 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 00:05:28,415 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 00:05:28,415 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 00:05:28,417 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 00:05:28,418 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 00:05:28,419 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 00:05:28,420 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 00:05:28,421 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 00:05:28,423 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 00:05:28,424 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 00:05:28,425 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 00:05:28,426 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 00:05:28,440 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 00:05:28,441 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 00:05:28,441 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 00:05:28,442 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 00:05:28,443 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 00:05:28,452 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 00:05:28,502 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 00:05:28,502 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 00:05:28,507 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 00:05:28,508 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 00:05:28,508 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 00:05:28,508 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 00:05:28,508 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 00:05:28,509 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 00:05:28,509 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 00:05:28,509 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 00:05:28,510 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 00:05:28,511 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 00:05:28,511 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 00:05:28,511 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 00:05:28,512 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 00:05:28,512 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 00:05:28,512 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 00:05:28,512 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 00:05:28,513 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 00:05:28,513 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 00:05:28,513 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 00:05:28,514 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 00:05:28,514 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 00:05:28,514 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 00:05:28,514 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 00:05:28,515 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 00:05:28,515 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 00:05:28,515 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 00:05:28,516 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 00:05:28,516 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-28 00:05:28,958 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 00:05:28,995 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 00:05:28,999 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 00:05:29,000 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 00:05:29,001 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 00:05:29,002 INFO L432 ainManager$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.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-28 00:05:29,091 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3490c1c16/551434fb582842abb280390394eacc6f/FLAGfabfb44e8 [2020-10-28 00:05:29,741 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 00:05:29,742 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-28 00:05:29,762 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3490c1c16/551434fb582842abb280390394eacc6f/FLAGfabfb44e8 [2020-10-28 00:05:30,056 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3490c1c16/551434fb582842abb280390394eacc6f [2020-10-28 00:05:30,059 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 00:05:30,065 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 00:05:30,068 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 00:05:30,068 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 00:05:30,073 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 00:05:30,074 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:05:30" (1/1) ... [2020-10-28 00:05:30,083 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11746558 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:05:30, skipping insertion in model container [2020-10-28 00:05:30,083 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:05:30" (1/1) ... [2020-10-28 00:05:30,091 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 00:05:30,162 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 00:05:30,467 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 00:05:30,500 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 00:05:30,681 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 00:05:30,718 INFO L208 MainTranslator]: Completed translation [2020-10-28 00:05:30,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:05:30 WrapperNode [2020-10-28 00:05:30,719 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 00:05:30,721 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 00:05:30,721 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 00:05:30,721 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 00:05:30,738 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:05:30" (1/1) ... [2020-10-28 00:05:30,740 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:05:30" (1/1) ... [2020-10-28 00:05:30,774 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:05:30" (1/1) ... [2020-10-28 00:05:30,774 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:05:30" (1/1) ... [2020-10-28 00:05:30,812 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:05:30" (1/1) ... [2020-10-28 00:05:30,826 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:05:30" (1/1) ... [2020-10-28 00:05:30,832 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:05:30" (1/1) ... [2020-10-28 00:05:30,842 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 00:05:30,843 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 00:05:30,843 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 00:05:30,844 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 00:05:30,847 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:05:30" (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 00:05:30,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 00:05:30,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 00:05:30,924 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 00:05:30,925 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 00:05:30,925 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 00:05:30,925 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 00:05:30,925 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 00:05:30,925 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 00:05:30,926 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 00:05:30,926 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 00:05:30,926 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 00:05:30,926 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 00:05:30,926 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 00:05:30,926 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 00:05:30,927 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 00:05:30,927 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 00:05:30,927 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 00:05:30,927 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 00:05:30,927 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 00:05:30,927 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 00:05:30,928 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 00:05:30,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 00:05:30,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 00:05:30,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 00:05:30,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 00:05:30,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 00:05:30,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 00:05:32,114 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 00:05:32,115 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 00:05:32,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:05:32 BoogieIcfgContainer [2020-10-28 00:05:32,127 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 00:05:32,132 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 00:05:32,132 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 00:05:32,139 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 00:05:32,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:05:30" (1/3) ... [2020-10-28 00:05:32,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@662cf79f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:05:32, skipping insertion in model container [2020-10-28 00:05:32,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:05:30" (2/3) ... [2020-10-28 00:05:32,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@662cf79f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:05:32, skipping insertion in model container [2020-10-28 00:05:32,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:05:32" (3/3) ... [2020-10-28 00:05:32,150 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-28 00:05:32,178 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 00:05:32,194 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 00:05:32,210 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 00:05:32,238 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 00:05:32,238 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 00:05:32,238 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 00:05:32,239 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 00:05:32,239 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 00:05:32,239 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 00:05:32,239 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 00:05:32,239 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 00:05:32,262 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states. [2020-10-28 00:05:32,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-28 00:05:32,269 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:05:32,270 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] [2020-10-28 00:05:32,271 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:05:32,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:05:32,278 INFO L82 PathProgramCache]: Analyzing trace with hash -1354154435, now seen corresponding path program 1 times [2020-10-28 00:05:32,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:05:32,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1226151940] [2020-10-28 00:05:32,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:05:32,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:05:32,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:32,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:33,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:34,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:05:34,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-28 00:05:34,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 00:05:34,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2309 [2020-10-28 00:05:34,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:05:34,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:05:34,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-28 00:05:34,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 00:05:34,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 00:05:35,413 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-28 00:05:35,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:05:35,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:05:35,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:35,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:05:35,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:05:35,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:05:35,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 00:05:35,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:05:35,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:05:35,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:05:35,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:05:35,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:05:35,497 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 00:05:35,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1226151940] [2020-10-28 00:05:35,500 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:05:35,501 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:05:35,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321336556] [2020-10-28 00:05:35,509 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:05:35,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:05:35,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:05:35,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:05:35,535 INFO L87 Difference]: Start difference. First operand 157 states. Second operand 4 states. [2020-10-28 00:05:36,000 WARN L193 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-28 00:05:36,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:05:36,998 INFO L93 Difference]: Finished difference Result 299 states and 480 transitions. [2020-10-28 00:05:36,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:05:37,001 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-10-28 00:05:37,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:05:37,015 INFO L225 Difference]: With dead ends: 299 [2020-10-28 00:05:37,015 INFO L226 Difference]: Without dead ends: 224 [2020-10-28 00:05:37,020 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:05:37,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-10-28 00:05:37,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 221. [2020-10-28 00:05:37,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-10-28 00:05:37,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 324 transitions. [2020-10-28 00:05:37,103 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 324 transitions. Word has length 54 [2020-10-28 00:05:37,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:05:37,106 INFO L481 AbstractCegarLoop]: Abstraction has 221 states and 324 transitions. [2020-10-28 00:05:37,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:05:37,106 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 324 transitions. [2020-10-28 00:05:37,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-28 00:05:37,111 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:05:37,112 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] [2020-10-28 00:05:37,112 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 00:05:37,113 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:05:37,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:05:37,114 INFO L82 PathProgramCache]: Analyzing trace with hash -604795160, now seen corresponding path program 1 times [2020-10-28 00:05:37,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:05:37,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2042725727] [2020-10-28 00:05:37,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:05:37,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:05:37,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:37,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:37,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:37,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:37,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:42,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:05:42,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-28 00:05:42,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 00:05:42,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 00:05:42,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:05:42,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:05:42,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-28 00:05:42,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 00:05:42,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 00:05:42,435 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-28 00:05:42,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:05:42,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:05:42,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:42,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:05:42,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:05:42,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:05:42,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 00:05:42,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:05:42,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:05:42,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:05:42,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:05:42,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 00:05:42,479 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 00:05:42,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2042725727] [2020-10-28 00:05:42,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:05:42,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:05:42,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020383548] [2020-10-28 00:05:42,484 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:05:42,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:05:42,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:05:42,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:05:42,486 INFO L87 Difference]: Start difference. First operand 221 states and 324 transitions. Second operand 4 states. [2020-10-28 00:05:42,720 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-28 00:05:43,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:05:43,420 INFO L93 Difference]: Finished difference Result 547 states and 824 transitions. [2020-10-28 00:05:43,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:05:43,421 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2020-10-28 00:05:43,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:05:43,425 INFO L225 Difference]: With dead ends: 547 [2020-10-28 00:05:43,425 INFO L226 Difference]: Without dead ends: 384 [2020-10-28 00:05:43,428 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:05:43,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2020-10-28 00:05:43,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 381. [2020-10-28 00:05:43,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 381 states. [2020-10-28 00:05:43,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 381 states to 381 states and 561 transitions. [2020-10-28 00:05:43,479 INFO L78 Accepts]: Start accepts. Automaton has 381 states and 561 transitions. Word has length 57 [2020-10-28 00:05:43,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:05:43,480 INFO L481 AbstractCegarLoop]: Abstraction has 381 states and 561 transitions. [2020-10-28 00:05:43,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:05:43,480 INFO L276 IsEmpty]: Start isEmpty. Operand 381 states and 561 transitions. [2020-10-28 00:05:43,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-28 00:05:43,487 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:05:43,487 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:05:43,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 00:05:43,490 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:05:43,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:05:43,491 INFO L82 PathProgramCache]: Analyzing trace with hash -1612176600, now seen corresponding path program 1 times [2020-10-28 00:05:43,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:05:43,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [882466928] [2020-10-28 00:05:43,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:05:43,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:05:43,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:43,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:43,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:43,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:43,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:48,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:05:48,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-28 00:05:48,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 00:05:48,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 00:05:48,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:05:48,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:05:48,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-28 00:05:48,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 00:05:48,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:05:48,810 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-28 00:05:48,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:05:48,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:05:48,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:48,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:05:48,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:05:48,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:05:48,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 00:05:48,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:05:48,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:05:48,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:05:48,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:05:48,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 00:05:48,854 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 00:05:48,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [882466928] [2020-10-28 00:05:48,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:05:48,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:05:48,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136999255] [2020-10-28 00:05:48,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:05:48,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:05:48,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:05:48,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:05:48,858 INFO L87 Difference]: Start difference. First operand 381 states and 561 transitions. Second operand 4 states. [2020-10-28 00:05:49,098 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-28 00:05:49,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:05:49,734 INFO L93 Difference]: Finished difference Result 899 states and 1342 transitions. [2020-10-28 00:05:49,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:05:49,735 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2020-10-28 00:05:49,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:05:49,740 INFO L225 Difference]: With dead ends: 899 [2020-10-28 00:05:49,740 INFO L226 Difference]: Without dead ends: 640 [2020-10-28 00:05:49,748 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:05:49,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2020-10-28 00:05:49,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 637. [2020-10-28 00:05:49,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 637 states. [2020-10-28 00:05:49,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 637 states to 637 states and 932 transitions. [2020-10-28 00:05:49,824 INFO L78 Accepts]: Start accepts. Automaton has 637 states and 932 transitions. Word has length 57 [2020-10-28 00:05:49,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:05:49,827 INFO L481 AbstractCegarLoop]: Abstraction has 637 states and 932 transitions. [2020-10-28 00:05:49,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:05:49,827 INFO L276 IsEmpty]: Start isEmpty. Operand 637 states and 932 transitions. [2020-10-28 00:05:49,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-28 00:05:49,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:05:49,838 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 00:05:49,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 00:05:49,839 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:05:49,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:05:49,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1880238250, now seen corresponding path program 1 times [2020-10-28 00:05:49,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:05:49,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1460685270] [2020-10-28 00:05:49,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:05:49,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:05:49,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:49,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:49,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:50,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:50,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:54,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:05:54,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-28 00:05:54,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 00:05:54,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 00:05:54,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:05:54,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 00:05:54,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-28 00:05:54,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 00:05:54,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:05:55,086 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-28 00:05:55,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:05:55,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:05:55,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:55,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:05:55,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:05:55,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:05:55,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 00:05:55,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:05:55,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:05:55,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:05:55,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:05:55,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:05:55,121 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 00:05:55,121 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1460685270] [2020-10-28 00:05:55,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:05:55,121 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 00:05:55,122 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170327209] [2020-10-28 00:05:55,122 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 00:05:55,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:05:55,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 00:05:55,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 00:05:55,123 INFO L87 Difference]: Start difference. First operand 637 states and 932 transitions. Second operand 4 states. [2020-10-28 00:05:55,341 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-28 00:05:55,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:05:55,992 INFO L93 Difference]: Finished difference Result 1619 states and 2380 transitions. [2020-10-28 00:05:55,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 00:05:55,993 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 57 [2020-10-28 00:05:55,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:05:56,000 INFO L225 Difference]: With dead ends: 1619 [2020-10-28 00:05:56,000 INFO L226 Difference]: Without dead ends: 1112 [2020-10-28 00:05:56,002 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 00:05:56,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1112 states. [2020-10-28 00:05:56,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1112 to 1109. [2020-10-28 00:05:56,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1109 states. [2020-10-28 00:05:56,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1109 states to 1109 states and 1594 transitions. [2020-10-28 00:05:56,064 INFO L78 Accepts]: Start accepts. Automaton has 1109 states and 1594 transitions. Word has length 57 [2020-10-28 00:05:56,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:05:56,065 INFO L481 AbstractCegarLoop]: Abstraction has 1109 states and 1594 transitions. [2020-10-28 00:05:56,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 00:05:56,065 INFO L276 IsEmpty]: Start isEmpty. Operand 1109 states and 1594 transitions. [2020-10-28 00:05:56,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-28 00:05:56,066 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:05:56,067 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] [2020-10-28 00:05:56,067 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 00:05:56,067 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:05:56,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:05:56,068 INFO L82 PathProgramCache]: Analyzing trace with hash -1166450857, now seen corresponding path program 1 times [2020-10-28 00:05:56,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:05:56,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2094537314] [2020-10-28 00:05:56,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:05:56,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:05:56,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:56,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:56,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:56,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:56,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:59,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:05:59,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-28 00:05:59,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 00:05:59,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3519 [2020-10-28 00:05:59,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:05:59,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 00:05:59,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 00:05:59,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 00:05:59,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:05:59,861 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-28 00:05:59,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:05:59,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:05:59,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:05:59,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:05:59,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:05:59,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:05:59,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 00:05:59,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:05:59,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:05:59,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:05:59,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:05:59,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:05:59,894 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 00:05:59,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2094537314] [2020-10-28 00:05:59,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:05:59,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 00:05:59,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595530513] [2020-10-28 00:05:59,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 00:05:59,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:05:59,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 00:05:59,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:05:59,898 INFO L87 Difference]: Start difference. First operand 1109 states and 1594 transitions. Second operand 6 states. [2020-10-28 00:06:00,537 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-28 00:06:01,264 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-28 00:06:01,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:06:01,422 INFO L93 Difference]: Finished difference Result 4645 states and 6776 transitions. [2020-10-28 00:06:01,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 00:06:01,422 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2020-10-28 00:06:01,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:06:01,444 INFO L225 Difference]: With dead ends: 4645 [2020-10-28 00:06:01,445 INFO L226 Difference]: Without dead ends: 3862 [2020-10-28 00:06:01,448 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 00:06:01,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3862 states. [2020-10-28 00:06:01,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3862 to 1121. [2020-10-28 00:06:01,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1121 states. [2020-10-28 00:06:01,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1121 states to 1121 states and 1594 transitions. [2020-10-28 00:06:01,569 INFO L78 Accepts]: Start accepts. Automaton has 1121 states and 1594 transitions. Word has length 58 [2020-10-28 00:06:01,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:06:01,569 INFO L481 AbstractCegarLoop]: Abstraction has 1121 states and 1594 transitions. [2020-10-28 00:06:01,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 00:06:01,570 INFO L276 IsEmpty]: Start isEmpty. Operand 1121 states and 1594 transitions. [2020-10-28 00:06:01,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-28 00:06:01,571 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:06:01,571 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] [2020-10-28 00:06:01,572 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 00:06:01,572 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:06:01,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:06:01,572 INFO L82 PathProgramCache]: Analyzing trace with hash -73117020, now seen corresponding path program 1 times [2020-10-28 00:06:01,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:06:01,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [936188711] [2020-10-28 00:06:01,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:06:01,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:06:01,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:01,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:01,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:02,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:02,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:04,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:06:04,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-28 00:06:04,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 00:06:04,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2949 [2020-10-28 00:06:04,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:06:04,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 00:06:04,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 00:06:04,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 00:06:04,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:06:04,837 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-28 00:06:04,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:06:04,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:06:04,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:04,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:06:04,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:06:04,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:06:04,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 00:06:04,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:06:04,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:06:04,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:06:04,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:06:04,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 00:06:04,877 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 00:06:04,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [936188711] [2020-10-28 00:06:04,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:06:04,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 00:06:04,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411167178] [2020-10-28 00:06:04,879 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 00:06:04,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:06:04,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 00:06:04,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:06:04,881 INFO L87 Difference]: Start difference. First operand 1121 states and 1594 transitions. Second operand 6 states. [2020-10-28 00:06:05,598 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-28 00:06:06,311 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-28 00:06:06,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:06:06,486 INFO L93 Difference]: Finished difference Result 4783 states and 6892 transitions. [2020-10-28 00:06:06,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 00:06:06,487 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 58 [2020-10-28 00:06:06,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:06:06,507 INFO L225 Difference]: With dead ends: 4783 [2020-10-28 00:06:06,507 INFO L226 Difference]: Without dead ends: 4026 [2020-10-28 00:06:06,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 00:06:06,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4026 states. [2020-10-28 00:06:06,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4026 to 1225. [2020-10-28 00:06:06,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1225 states. [2020-10-28 00:06:06,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 1706 transitions. [2020-10-28 00:06:06,628 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 1706 transitions. Word has length 58 [2020-10-28 00:06:06,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:06:06,629 INFO L481 AbstractCegarLoop]: Abstraction has 1225 states and 1706 transitions. [2020-10-28 00:06:06,629 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 00:06:06,629 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 1706 transitions. [2020-10-28 00:06:06,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-28 00:06:06,631 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:06:06,631 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] [2020-10-28 00:06:06,631 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 00:06:06,631 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:06:06,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:06:06,632 INFO L82 PathProgramCache]: Analyzing trace with hash -31198825, now seen corresponding path program 1 times [2020-10-28 00:06:06,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:06:06,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1974108714] [2020-10-28 00:06:06,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:06:06,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:06:06,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:06,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:06,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:06,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:07,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:07,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:07,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:07,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:07,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:08,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:08,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:08,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:11,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:06:11,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-28 00:06:11,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 00:06:11,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 00:06:11,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:06:11,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 00:06:11,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 00:06:11,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 00:06:11,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:06:12,165 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-28 00:06:12,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:06:12,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:06:12,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:12,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:06:12,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:06:12,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:06:12,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 00:06:12,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:06:12,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:06:12,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:06:12,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:06:12,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:06:12,211 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 00:06:12,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1974108714] [2020-10-28 00:06:12,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:06:12,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-28 00:06:12,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104155707] [2020-10-28 00:06:12,213 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 00:06:12,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:06:12,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 00:06:12,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-28 00:06:12,214 INFO L87 Difference]: Start difference. First operand 1225 states and 1706 transitions. Second operand 11 states. [2020-10-28 00:06:12,471 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-28 00:06:13,685 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-28 00:06:15,037 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-28 00:06:15,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:06:15,550 INFO L93 Difference]: Finished difference Result 9000 states and 12707 transitions. [2020-10-28 00:06:15,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-28 00:06:15,551 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 59 [2020-10-28 00:06:15,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:06:15,592 INFO L225 Difference]: With dead ends: 9000 [2020-10-28 00:06:15,592 INFO L226 Difference]: Without dead ends: 8191 [2020-10-28 00:06:15,597 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 425 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=332, Invalid=1228, Unknown=0, NotChecked=0, Total=1560 [2020-10-28 00:06:15,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8191 states. [2020-10-28 00:06:15,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8191 to 1311. [2020-10-28 00:06:15,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1311 states. [2020-10-28 00:06:15,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1311 states to 1311 states and 1812 transitions. [2020-10-28 00:06:15,786 INFO L78 Accepts]: Start accepts. Automaton has 1311 states and 1812 transitions. Word has length 59 [2020-10-28 00:06:15,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:06:15,786 INFO L481 AbstractCegarLoop]: Abstraction has 1311 states and 1812 transitions. [2020-10-28 00:06:15,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 00:06:15,787 INFO L276 IsEmpty]: Start isEmpty. Operand 1311 states and 1812 transitions. [2020-10-28 00:06:15,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-28 00:06:15,789 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:06:15,789 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] [2020-10-28 00:06:15,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 00:06:15,789 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:06:15,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:06:15,790 INFO L82 PathProgramCache]: Analyzing trace with hash -1705879036, now seen corresponding path program 1 times [2020-10-28 00:06:15,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:06:15,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1673024243] [2020-10-28 00:06:15,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:06:15,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:06:15,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:15,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:15,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:15,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:16,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:18,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:06:18,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-28 00:06:18,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 00:06:18,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2859 [2020-10-28 00:06:18,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:06:18,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 00:06:18,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 00:06:18,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 00:06:18,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:06:18,975 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-28 00:06:18,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:06:18,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:06:18,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:18,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:06:18,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:06:18,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:06:18,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 00:06:18,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:06:18,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:06:18,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:06:18,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:06:18,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:06:19,016 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 00:06:19,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1673024243] [2020-10-28 00:06:19,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:06:19,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 00:06:19,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600163055] [2020-10-28 00:06:19,018 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 00:06:19,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:06:19,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 00:06:19,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:06:19,019 INFO L87 Difference]: Start difference. First operand 1311 states and 1812 transitions. Second operand 6 states. [2020-10-28 00:06:19,752 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-28 00:06:20,437 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-28 00:06:20,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:06:20,639 INFO L93 Difference]: Finished difference Result 4433 states and 6207 transitions. [2020-10-28 00:06:20,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 00:06:20,640 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 59 [2020-10-28 00:06:20,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:06:20,658 INFO L225 Difference]: With dead ends: 4433 [2020-10-28 00:06:20,658 INFO L226 Difference]: Without dead ends: 3588 [2020-10-28 00:06:20,662 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 00:06:20,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3588 states. [2020-10-28 00:06:20,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3588 to 1353. [2020-10-28 00:06:20,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1353 states. [2020-10-28 00:06:20,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1353 states to 1353 states and 1838 transitions. [2020-10-28 00:06:20,809 INFO L78 Accepts]: Start accepts. Automaton has 1353 states and 1838 transitions. Word has length 59 [2020-10-28 00:06:20,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:06:20,810 INFO L481 AbstractCegarLoop]: Abstraction has 1353 states and 1838 transitions. [2020-10-28 00:06:20,810 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 00:06:20,810 INFO L276 IsEmpty]: Start isEmpty. Operand 1353 states and 1838 transitions. [2020-10-28 00:06:20,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-28 00:06:20,812 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:06:20,813 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] [2020-10-28 00:06:20,813 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 00:06:20,813 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:06:20,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:06:20,814 INFO L82 PathProgramCache]: Analyzing trace with hash -447056751, now seen corresponding path program 1 times [2020-10-28 00:06:20,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:06:20,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1297992644] [2020-10-28 00:06:20,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:06:20,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:06:20,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:20,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:20,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:20,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:21,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:21,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:22,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:22,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:22,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:22,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:22,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:22,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:23,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:25,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:06:25,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-28 00:06:25,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 00:06:25,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 00:06:25,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:06:25,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 00:06:25,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-28 00:06:25,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-28 00:06:25,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:06:26,187 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 36 [2020-10-28 00:06:26,473 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-28 00:06:26,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:06:26,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:06:26,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:26,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:06:26,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:06:26,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:06:26,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 00:06:26,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:06:26,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:06:26,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:06:26,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:06:26,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:06:26,514 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 00:06:26,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1297992644] [2020-10-28 00:06:26,515 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:06:26,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-28 00:06:26,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126303779] [2020-10-28 00:06:26,516 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 00:06:26,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:06:26,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 00:06:26,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-10-28 00:06:26,518 INFO L87 Difference]: Start difference. First operand 1353 states and 1838 transitions. Second operand 12 states. [2020-10-28 00:06:26,750 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-28 00:06:27,219 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-10-28 00:06:27,464 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2020-10-28 00:06:27,758 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2020-10-28 00:06:27,908 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 43 [2020-10-28 00:06:28,540 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 42 [2020-10-28 00:06:29,443 WARN L193 SmtUtils]: Spent 478.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 154 [2020-10-28 00:06:29,786 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-28 00:06:30,891 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-10-28 00:06:32,540 WARN L193 SmtUtils]: Spent 433.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 148 [2020-10-28 00:06:32,806 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-28 00:06:33,221 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-10-28 00:06:33,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:06:33,812 INFO L93 Difference]: Finished difference Result 8625 states and 11939 transitions. [2020-10-28 00:06:33,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-10-28 00:06:33,813 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 60 [2020-10-28 00:06:33,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:06:33,846 INFO L225 Difference]: With dead ends: 8625 [2020-10-28 00:06:33,846 INFO L226 Difference]: Without dead ends: 7618 [2020-10-28 00:06:33,852 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1005 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=532, Invalid=2548, Unknown=0, NotChecked=0, Total=3080 [2020-10-28 00:06:33,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7618 states. [2020-10-28 00:06:34,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7618 to 2104. [2020-10-28 00:06:34,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2104 states. [2020-10-28 00:06:34,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2104 states to 2104 states and 2898 transitions. [2020-10-28 00:06:34,135 INFO L78 Accepts]: Start accepts. Automaton has 2104 states and 2898 transitions. Word has length 60 [2020-10-28 00:06:34,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:06:34,136 INFO L481 AbstractCegarLoop]: Abstraction has 2104 states and 2898 transitions. [2020-10-28 00:06:34,136 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 00:06:34,136 INFO L276 IsEmpty]: Start isEmpty. Operand 2104 states and 2898 transitions. [2020-10-28 00:06:34,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-28 00:06:34,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:06:34,138 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] [2020-10-28 00:06:34,138 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 00:06:34,138 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:06:34,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:06:34,139 INFO L82 PathProgramCache]: Analyzing trace with hash -470428881, now seen corresponding path program 1 times [2020-10-28 00:06:34,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:06:34,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [999274472] [2020-10-28 00:06:34,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:06:34,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:06:34,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:34,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:34,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:34,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:34,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:34,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:36,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:39,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:06:39,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-28 00:06:39,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 00:06:39,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 00:06:39,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:06:39,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 00:06:39,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-28 00:06:39,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-28 00:06:39,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:06:39,407 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-28 00:06:39,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:06:39,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:06:39,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:39,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:06:39,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:06:39,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:06:39,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 00:06:39,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:06:39,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:06:39,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:06:39,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:06:39,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:06:39,436 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 00:06:39,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [999274472] [2020-10-28 00:06:39,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:06:39,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 00:06:39,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347887367] [2020-10-28 00:06:39,438 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 00:06:39,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:06:39,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 00:06:39,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:06:39,439 INFO L87 Difference]: Start difference. First operand 2104 states and 2898 transitions. Second operand 6 states. [2020-10-28 00:06:39,685 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-28 00:06:40,524 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-28 00:06:40,931 WARN L193 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-28 00:06:42,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:06:42,647 INFO L93 Difference]: Finished difference Result 9106 states and 12860 transitions. [2020-10-28 00:06:42,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 00:06:42,647 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-10-28 00:06:42,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:06:42,664 INFO L225 Difference]: With dead ends: 9106 [2020-10-28 00:06:42,664 INFO L226 Difference]: Without dead ends: 7735 [2020-10-28 00:06:42,669 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-28 00:06:42,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7735 states. [2020-10-28 00:06:43,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7735 to 3664. [2020-10-28 00:06:43,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3664 states. [2020-10-28 00:06:43,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3664 states to 3664 states and 5085 transitions. [2020-10-28 00:06:43,029 INFO L78 Accepts]: Start accepts. Automaton has 3664 states and 5085 transitions. Word has length 60 [2020-10-28 00:06:43,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:06:43,030 INFO L481 AbstractCegarLoop]: Abstraction has 3664 states and 5085 transitions. [2020-10-28 00:06:43,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 00:06:43,030 INFO L276 IsEmpty]: Start isEmpty. Operand 3664 states and 5085 transitions. [2020-10-28 00:06:43,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-28 00:06:43,032 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:06:43,033 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] [2020-10-28 00:06:43,033 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 00:06:43,033 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:06:43,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:06:43,034 INFO L82 PathProgramCache]: Analyzing trace with hash -940312645, now seen corresponding path program 1 times [2020-10-28 00:06:43,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:06:43,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [562656238] [2020-10-28 00:06:43,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:06:43,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:06:43,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:43,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:43,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:43,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:43,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:43,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:44,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:44,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:44,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:44,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:44,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:45,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:48,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:06:48,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-28 00:06:48,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 00:06:48,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 00:06:48,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:06:48,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 00:06:48,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 00:06:48,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-28 00:06:48,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:06:48,460 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-28 00:06:48,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:06:48,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:06:48,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:48,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:06:48,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:06:48,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:06:48,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 00:06:48,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:06:48,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:06:48,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:06:48,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:06:48,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:06:48,483 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 00:06:48,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [562656238] [2020-10-28 00:06:48,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:06:48,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-28 00:06:48,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389108959] [2020-10-28 00:06:48,485 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 00:06:48,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:06:48,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 00:06:48,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-10-28 00:06:48,486 INFO L87 Difference]: Start difference. First operand 3664 states and 5085 transitions. Second operand 11 states. [2020-10-28 00:06:48,758 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-28 00:06:50,310 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-28 00:06:52,983 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-28 00:06:54,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:06:54,788 INFO L93 Difference]: Finished difference Result 28143 states and 39052 transitions. [2020-10-28 00:06:54,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-28 00:06:54,788 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 60 [2020-10-28 00:06:54,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:06:54,850 INFO L225 Difference]: With dead ends: 28143 [2020-10-28 00:06:54,850 INFO L226 Difference]: Without dead ends: 25336 [2020-10-28 00:06:54,864 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=217, Invalid=839, Unknown=0, NotChecked=0, Total=1056 [2020-10-28 00:06:54,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25336 states. [2020-10-28 00:06:55,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25336 to 3894. [2020-10-28 00:06:55,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3894 states. [2020-10-28 00:06:55,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3894 states to 3894 states and 5378 transitions. [2020-10-28 00:06:55,608 INFO L78 Accepts]: Start accepts. Automaton has 3894 states and 5378 transitions. Word has length 60 [2020-10-28 00:06:55,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:06:55,609 INFO L481 AbstractCegarLoop]: Abstraction has 3894 states and 5378 transitions. [2020-10-28 00:06:55,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 00:06:55,609 INFO L276 IsEmpty]: Start isEmpty. Operand 3894 states and 5378 transitions. [2020-10-28 00:06:55,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-28 00:06:55,613 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:06:55,613 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] [2020-10-28 00:06:55,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 00:06:55,614 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:06:55,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:06:55,614 INFO L82 PathProgramCache]: Analyzing trace with hash 1160402632, now seen corresponding path program 1 times [2020-10-28 00:06:55,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:06:55,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1178886456] [2020-10-28 00:06:55,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:06:55,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:06:55,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:55,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:55,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:55,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:55,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:55,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:56,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:56,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:56,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:56,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:58,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:06:58,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:00,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:07:00,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-28 00:07:00,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 00:07:00,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 00:07:00,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:07:00,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 00:07:00,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 00:07:00,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 00:07:00,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:07:00,924 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 22 [2020-10-28 00:07:01,216 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-28 00:07:01,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:07:01,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:07:01,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:01,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:07:01,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:07:01,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:07:01,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 00:07:01,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:07:01,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:07:01,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:07:01,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:07:01,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:07:01,248 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 00:07:01,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1178886456] [2020-10-28 00:07:01,249 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:07:01,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-28 00:07:01,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316748315] [2020-10-28 00:07:01,249 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 00:07:01,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:07:01,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 00:07:01,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-28 00:07:01,251 INFO L87 Difference]: Start difference. First operand 3894 states and 5378 transitions. Second operand 11 states. [2020-10-28 00:07:01,592 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-28 00:07:03,014 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-28 00:07:05,983 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-28 00:07:06,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:07:06,864 INFO L93 Difference]: Finished difference Result 15034 states and 20871 transitions. [2020-10-28 00:07:06,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-28 00:07:06,865 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 60 [2020-10-28 00:07:06,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:07:06,904 INFO L225 Difference]: With dead ends: 15034 [2020-10-28 00:07:06,905 INFO L226 Difference]: Without dead ends: 13486 [2020-10-28 00:07:06,912 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=149, Invalid=607, Unknown=0, NotChecked=0, Total=756 [2020-10-28 00:07:06,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13486 states. [2020-10-28 00:07:07,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13486 to 3909. [2020-10-28 00:07:07,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3909 states. [2020-10-28 00:07:07,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3909 states to 3909 states and 5383 transitions. [2020-10-28 00:07:07,524 INFO L78 Accepts]: Start accepts. Automaton has 3909 states and 5383 transitions. Word has length 60 [2020-10-28 00:07:07,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:07:07,524 INFO L481 AbstractCegarLoop]: Abstraction has 3909 states and 5383 transitions. [2020-10-28 00:07:07,524 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 00:07:07,524 INFO L276 IsEmpty]: Start isEmpty. Operand 3909 states and 5383 transitions. [2020-10-28 00:07:07,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-28 00:07:07,527 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:07:07,527 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] [2020-10-28 00:07:07,527 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 00:07:07,527 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:07:07,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:07:07,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1565813890, now seen corresponding path program 1 times [2020-10-28 00:07:07,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:07:07,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1399571801] [2020-10-28 00:07:07,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:07:07,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:07:07,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:07,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:07,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:07,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:07,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:07,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:08,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:08,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:09,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:09,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:09,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:12,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:07:12,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-28 00:07:12,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 00:07:12,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-28 00:07:12,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:07:12,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 00:07:12,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 00:07:12,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-28 00:07:12,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:07:12,846 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-28 00:07:12,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:07:12,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:07:12,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:12,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:07:12,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:07:12,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:07:12,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 00:07:12,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:07:12,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:07:12,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:07:12,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:07:12,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:07:12,878 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 00:07:12,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1399571801] [2020-10-28 00:07:12,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:07:12,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 00:07:12,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295800274] [2020-10-28 00:07:12,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 00:07:12,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:07:12,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 00:07:12,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:07:12,881 INFO L87 Difference]: Start difference. First operand 3909 states and 5383 transitions. Second operand 6 states. [2020-10-28 00:07:13,151 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-28 00:07:13,816 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-28 00:07:14,945 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-28 00:07:15,266 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-28 00:07:15,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:07:15,570 INFO L93 Difference]: Finished difference Result 10923 states and 15365 transitions. [2020-10-28 00:07:15,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 00:07:15,571 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-10-28 00:07:15,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:07:15,587 INFO L225 Difference]: With dead ends: 10923 [2020-10-28 00:07:15,587 INFO L226 Difference]: Without dead ends: 8328 [2020-10-28 00:07:15,594 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-28 00:07:15,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8328 states. [2020-10-28 00:07:16,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8328 to 4771. [2020-10-28 00:07:16,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4771 states. [2020-10-28 00:07:16,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4771 states to 4771 states and 6624 transitions. [2020-10-28 00:07:16,266 INFO L78 Accepts]: Start accepts. Automaton has 4771 states and 6624 transitions. Word has length 61 [2020-10-28 00:07:16,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:07:16,267 INFO L481 AbstractCegarLoop]: Abstraction has 4771 states and 6624 transitions. [2020-10-28 00:07:16,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 00:07:16,267 INFO L276 IsEmpty]: Start isEmpty. Operand 4771 states and 6624 transitions. [2020-10-28 00:07:16,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-28 00:07:16,270 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:07:16,270 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] [2020-10-28 00:07:16,270 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 00:07:16,270 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:07:16,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:07:16,271 INFO L82 PathProgramCache]: Analyzing trace with hash -1942189485, now seen corresponding path program 1 times [2020-10-28 00:07:16,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:07:16,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1802214957] [2020-10-28 00:07:16,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:07:16,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:07:16,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:16,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:16,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:16,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:16,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:16,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:17,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:17,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:17,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:17,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:18,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:18,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:18,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:21,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:07:21,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-28 00:07:21,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 00:07:21,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 00:07:21,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:07:21,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 00:07:21,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-28 00:07:21,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-28 00:07:21,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:07:21,533 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 27 [2020-10-28 00:07:21,832 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-28 00:07:21,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:07:21,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:07:21,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:21,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:07:21,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:07:21,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:07:21,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 00:07:21,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:07:21,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:07:21,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:07:21,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:07:21,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:07:21,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 00:07:21,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1802214957] [2020-10-28 00:07:21,900 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:07:21,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-28 00:07:21,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767446130] [2020-10-28 00:07:21,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 00:07:21,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:07:21,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 00:07:21,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-10-28 00:07:21,905 INFO L87 Difference]: Start difference. First operand 4771 states and 6624 transitions. Second operand 12 states. [2020-10-28 00:07:22,165 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-28 00:07:23,767 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-28 00:07:24,020 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-28 00:07:27,097 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-28 00:07:27,524 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-28 00:07:28,253 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-28 00:07:33,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:07:33,335 INFO L93 Difference]: Finished difference Result 45404 states and 63356 transitions. [2020-10-28 00:07:33,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-10-28 00:07:33,335 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 61 [2020-10-28 00:07:33,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:07:33,416 INFO L225 Difference]: With dead ends: 45404 [2020-10-28 00:07:33,416 INFO L226 Difference]: Without dead ends: 41693 [2020-10-28 00:07:33,436 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 892 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=535, Invalid=2117, Unknown=0, NotChecked=0, Total=2652 [2020-10-28 00:07:33,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41693 states. [2020-10-28 00:07:35,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41693 to 8278. [2020-10-28 00:07:35,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8278 states. [2020-10-28 00:07:35,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8278 states to 8278 states and 11643 transitions. [2020-10-28 00:07:35,344 INFO L78 Accepts]: Start accepts. Automaton has 8278 states and 11643 transitions. Word has length 61 [2020-10-28 00:07:35,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:07:35,344 INFO L481 AbstractCegarLoop]: Abstraction has 8278 states and 11643 transitions. [2020-10-28 00:07:35,344 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 00:07:35,344 INFO L276 IsEmpty]: Start isEmpty. Operand 8278 states and 11643 transitions. [2020-10-28 00:07:35,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-28 00:07:35,348 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:07:35,348 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] [2020-10-28 00:07:35,348 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 00:07:35,348 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:07:35,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:07:35,349 INFO L82 PathProgramCache]: Analyzing trace with hash 1247568249, now seen corresponding path program 1 times [2020-10-28 00:07:35,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:07:35,349 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2144428144] [2020-10-28 00:07:35,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:07:35,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:07:35,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:35,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:35,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:35,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:35,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:35,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:36,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:40,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:07:40,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-28 00:07:40,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 00:07:40,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 00:07:40,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:07:40,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 00:07:40,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 00:07:40,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-28 00:07:40,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:07:40,615 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-28 00:07:40,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:07:40,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:07:40,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:40,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:07:40,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:07:40,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:07:40,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 00:07:40,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:07:40,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:07:40,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:07:40,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:07:40,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:07:40,639 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 00:07:40,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2144428144] [2020-10-28 00:07:40,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:07:40,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 00:07:40,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105423627] [2020-10-28 00:07:40,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 00:07:40,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:07:40,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 00:07:40,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:07:40,641 INFO L87 Difference]: Start difference. First operand 8278 states and 11643 transitions. Second operand 6 states. [2020-10-28 00:07:40,910 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-28 00:07:41,766 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-28 00:07:43,314 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-28 00:07:43,562 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-28 00:07:45,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:07:45,392 INFO L93 Difference]: Finished difference Result 23531 states and 33404 transitions. [2020-10-28 00:07:45,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 00:07:45,393 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-10-28 00:07:45,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:07:45,424 INFO L225 Difference]: With dead ends: 23531 [2020-10-28 00:07:45,424 INFO L226 Difference]: Without dead ends: 18504 [2020-10-28 00:07:45,439 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-28 00:07:45,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18504 states. [2020-10-28 00:07:47,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18504 to 10566. [2020-10-28 00:07:47,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10566 states. [2020-10-28 00:07:47,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10566 states to 10566 states and 14995 transitions. [2020-10-28 00:07:47,460 INFO L78 Accepts]: Start accepts. Automaton has 10566 states and 14995 transitions. Word has length 61 [2020-10-28 00:07:47,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:07:47,460 INFO L481 AbstractCegarLoop]: Abstraction has 10566 states and 14995 transitions. [2020-10-28 00:07:47,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 00:07:47,460 INFO L276 IsEmpty]: Start isEmpty. Operand 10566 states and 14995 transitions. [2020-10-28 00:07:47,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-28 00:07:47,464 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:07:47,465 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] [2020-10-28 00:07:47,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 00:07:47,465 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:07:47,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:07:47,466 INFO L82 PathProgramCache]: Analyzing trace with hash -470101504, now seen corresponding path program 1 times [2020-10-28 00:07:47,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:07:47,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [574283520] [2020-10-28 00:07:47,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:07:47,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:07:47,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:47,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:47,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:47,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:47,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:48,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:48,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:52,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:07:52,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-28 00:07:52,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 00:07:52,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 00:07:52,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:07:52,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 00:07:52,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-28 00:07:52,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 00:07:52,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:07:52,738 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-28 00:07:52,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:07:52,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:07:52,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:07:52,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:07:52,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:07:52,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:07:52,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 00:07:52,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:07:52,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:07:52,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:07:52,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:07:52,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:07:52,761 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 00:07:52,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [574283520] [2020-10-28 00:07:52,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:07:52,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 00:07:52,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205681478] [2020-10-28 00:07:52,762 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 00:07:52,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:07:52,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 00:07:52,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:07:52,763 INFO L87 Difference]: Start difference. First operand 10566 states and 14995 transitions. Second operand 6 states. [2020-10-28 00:07:53,010 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-28 00:07:54,669 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-28 00:07:55,119 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-28 00:08:03,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:08:03,100 INFO L93 Difference]: Finished difference Result 54341 states and 78178 transitions. [2020-10-28 00:08:03,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 00:08:03,101 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-10-28 00:08:03,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:08:03,169 INFO L225 Difference]: With dead ends: 54341 [2020-10-28 00:08:03,169 INFO L226 Difference]: Without dead ends: 45788 [2020-10-28 00:08:03,196 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-28 00:08:03,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45788 states. [2020-10-28 00:08:06,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45788 to 20085. [2020-10-28 00:08:06,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20085 states. [2020-10-28 00:08:06,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20085 states to 20085 states and 28594 transitions. [2020-10-28 00:08:06,987 INFO L78 Accepts]: Start accepts. Automaton has 20085 states and 28594 transitions. Word has length 61 [2020-10-28 00:08:06,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:08:06,987 INFO L481 AbstractCegarLoop]: Abstraction has 20085 states and 28594 transitions. [2020-10-28 00:08:06,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 00:08:06,987 INFO L276 IsEmpty]: Start isEmpty. Operand 20085 states and 28594 transitions. [2020-10-28 00:08:06,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-28 00:08:06,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:08:06,992 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] [2020-10-28 00:08:06,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 00:08:06,992 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:08:06,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:08:06,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1768687411, now seen corresponding path program 1 times [2020-10-28 00:08:06,993 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:08:06,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [800215507] [2020-10-28 00:08:06,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:08:07,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:08:07,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:07,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:07,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:07,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:07,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:07,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:07,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:07,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:07,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:08,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:08,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:12,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:08:12,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 00:08:12,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-28 00:08:12,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 00:08:12,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:08:12,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 00:08:12,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 00:08:12,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-28 00:08:12,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:08:12,261 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-28 00:08:12,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:08:12,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:08:12,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:12,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:08:12,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:08:12,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:08:12,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 00:08:12,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:08:12,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:08:12,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:08:12,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:08:12,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:08:12,286 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 00:08:12,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [800215507] [2020-10-28 00:08:12,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:08:12,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 00:08:12,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286473934] [2020-10-28 00:08:12,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 00:08:12,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:08:12,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 00:08:12,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 00:08:12,290 INFO L87 Difference]: Start difference. First operand 20085 states and 28594 transitions. Second operand 6 states. [2020-10-28 00:08:12,567 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-28 00:08:13,740 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-28 00:08:16,453 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-28 00:08:17,130 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-28 00:08:21,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:08:21,685 INFO L93 Difference]: Finished difference Result 51080 states and 72634 transitions. [2020-10-28 00:08:21,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 00:08:21,685 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 62 [2020-10-28 00:08:21,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:08:21,752 INFO L225 Difference]: With dead ends: 51080 [2020-10-28 00:08:21,752 INFO L226 Difference]: Without dead ends: 41093 [2020-10-28 00:08:21,779 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-28 00:08:21,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41093 states. [2020-10-28 00:08:26,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41093 to 24412. [2020-10-28 00:08:26,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24412 states. [2020-10-28 00:08:26,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24412 states to 24412 states and 34866 transitions. [2020-10-28 00:08:26,765 INFO L78 Accepts]: Start accepts. Automaton has 24412 states and 34866 transitions. Word has length 62 [2020-10-28 00:08:26,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 00:08:26,765 INFO L481 AbstractCegarLoop]: Abstraction has 24412 states and 34866 transitions. [2020-10-28 00:08:26,766 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 00:08:26,766 INFO L276 IsEmpty]: Start isEmpty. Operand 24412 states and 34866 transitions. [2020-10-28 00:08:26,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-28 00:08:26,774 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 00:08:26,774 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] [2020-10-28 00:08:26,776 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 00:08:26,776 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 00:08:26,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 00:08:26,777 INFO L82 PathProgramCache]: Analyzing trace with hash 2029228951, now seen corresponding path program 1 times [2020-10-28 00:08:26,777 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 00:08:26,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [338548226] [2020-10-28 00:08:26,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 00:08:26,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:08:26,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:26,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:26,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:27,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:27,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:27,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:27,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:28,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:28,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:28,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:28,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:28,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:28,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:28,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:28,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:29,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:30,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:30,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:30,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:31,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:31,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:31,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:31,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:31,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:08:31,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 00:08:31,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 23 [2020-10-28 00:08:31,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 00:08:31,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:08:31,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 00:08:31,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 00:08:31,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-28 00:08:31,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:08:32,109 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 35 [2020-10-28 00:08:32,398 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-28 00:08:32,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 00:08:32,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 00:08:32,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 00:08:32,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 00:08:32,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 00:08:32,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 00:08:32,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 00:08:32,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-28 00:08:32,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 00:08:32,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 00:08:32,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 00:08:32,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 00:08:32,424 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 00:08:32,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [338548226] [2020-10-28 00:08:32,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 00:08:32,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-28 00:08:32,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012920795] [2020-10-28 00:08:32,425 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 00:08:32,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 00:08:32,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 00:08:32,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-28 00:08:32,426 INFO L87 Difference]: Start difference. First operand 24412 states and 34866 transitions. Second operand 11 states. [2020-10-28 00:08:32,811 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-28 00:08:33,154 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2020-10-28 00:08:34,621 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-28 00:08:38,860 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-28 00:09:03,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 00:09:03,409 INFO L93 Difference]: Finished difference Result 136721 states and 193971 transitions. [2020-10-28 00:09:03,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-28 00:09:03,409 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 65 [2020-10-28 00:09:03,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 00:09:03,624 INFO L225 Difference]: With dead ends: 136721 [2020-10-28 00:09:03,624 INFO L226 Difference]: Without dead ends: 126141 [2020-10-28 00:09:03,659 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=177, Invalid=579, Unknown=0, NotChecked=0, Total=756 [2020-10-28 00:09:03,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126141 states.