/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 18:54:23,934 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 18:54:23,938 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 18:54:23,997 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 18:54:23,997 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 18:54:24,004 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 18:54:24,007 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 18:54:24,012 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 18:54:24,016 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 18:54:24,022 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 18:54:24,032 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 18:54:24,034 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 18:54:24,034 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 18:54:24,038 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 18:54:24,041 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 18:54:24,044 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 18:54:24,046 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 18:54:24,049 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 18:54:24,056 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 18:54:24,065 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 18:54:24,067 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 18:54:24,069 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 18:54:24,070 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 18:54:24,073 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 18:54:24,082 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 18:54:24,083 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 18:54:24,083 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 18:54:24,085 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 18:54:24,086 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 18:54:24,087 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 18:54:24,087 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 18:54:24,088 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 18:54:24,090 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 18:54:24,091 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 18:54:24,093 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 18:54:24,093 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 18:54:24,094 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 18:54:24,094 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 18:54:24,094 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 18:54:24,095 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 18:54:24,096 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 18:54:24,104 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 18:54:24,156 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 18:54:24,156 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 18:54:24,162 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 18:54:24,162 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 18:54:24,162 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 18:54:24,163 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 18:54:24,163 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 18:54:24,163 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 18:54:24,163 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 18:54:24,163 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 18:54:24,165 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 18:54:24,165 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 18:54:24,165 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 18:54:24,165 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 18:54:24,165 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 18:54:24,166 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 18:54:24,166 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 18:54:24,166 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 18:54:24,166 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 18:54:24,167 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 18:54:24,167 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 18:54:24,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 18:54:24,167 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 18:54:24,167 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 18:54:24,168 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 18:54:24,168 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 18:54:24,168 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 18:54:24,168 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 18:54:24,168 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 18:54:24,169 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 18:54:24,614 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 18:54:24,654 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 18:54:24,658 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 18:54:24,659 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 18:54:24,660 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 18:54:24,662 INFO L432 ainManager$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.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-28 18:54:24,741 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9deb4f329/504d7453df9b47abb64c9e905ede4fe4/FLAGff2d85018 [2020-10-28 18:54:25,400 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 18:54:25,400 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-28 18:54:25,413 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9deb4f329/504d7453df9b47abb64c9e905ede4fe4/FLAGff2d85018 [2020-10-28 18:54:25,665 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9deb4f329/504d7453df9b47abb64c9e905ede4fe4 [2020-10-28 18:54:25,669 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 18:54:25,675 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 18:54:25,680 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 18:54:25,681 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 18:54:25,685 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 18:54:25,687 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 06:54:25" (1/1) ... [2020-10-28 18:54:25,691 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c22b16b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:54:25, skipping insertion in model container [2020-10-28 18:54:25,692 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 06:54:25" (1/1) ... [2020-10-28 18:54:25,701 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 18:54:25,770 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 18:54:26,064 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 18:54:26,095 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 18:54:26,225 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 18:54:26,254 INFO L208 MainTranslator]: Completed translation [2020-10-28 18:54:26,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:54:26 WrapperNode [2020-10-28 18:54:26,255 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 18:54:26,256 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 18:54:26,257 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 18:54:26,257 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 18:54:26,269 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:54:26" (1/1) ... [2020-10-28 18:54:26,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:54:26" (1/1) ... [2020-10-28 18:54:26,283 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:54:26" (1/1) ... [2020-10-28 18:54:26,283 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:54:26" (1/1) ... [2020-10-28 18:54:26,301 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:54:26" (1/1) ... [2020-10-28 18:54:26,313 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:54:26" (1/1) ... [2020-10-28 18:54:26,318 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:54:26" (1/1) ... [2020-10-28 18:54:26,324 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 18:54:26,326 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 18:54:26,326 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 18:54:26,326 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 18:54:26,327 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:54:26" (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 18:54:26,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 18:54:26,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 18:54:26,434 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 18:54:26,434 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 18:54:26,434 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 18:54:26,434 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 18:54:26,434 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 18:54:26,434 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 18:54:26,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 18:54:26,435 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-28 18:54:26,435 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-28 18:54:26,435 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-28 18:54:26,435 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 18:54:26,435 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-28 18:54:26,436 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-28 18:54:26,436 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-28 18:54:26,436 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-28 18:54:26,436 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-28 18:54:26,436 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-28 18:54:26,436 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-28 18:54:26,437 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 18:54:26,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 18:54:26,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 18:54:26,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 18:54:26,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 18:54:26,437 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 18:54:26,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 18:54:27,395 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 18:54:27,395 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-28 18:54:27,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 06:54:27 BoogieIcfgContainer [2020-10-28 18:54:27,399 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 18:54:27,402 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 18:54:27,402 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 18:54:27,407 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 18:54:27,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 06:54:25" (1/3) ... [2020-10-28 18:54:27,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34d4112b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 06:54:27, skipping insertion in model container [2020-10-28 18:54:27,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 06:54:26" (2/3) ... [2020-10-28 18:54:27,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34d4112b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 06:54:27, skipping insertion in model container [2020-10-28 18:54:27,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 06:54:27" (3/3) ... [2020-10-28 18:54:27,413 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2020-10-28 18:54:27,427 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 18:54:27,434 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 18:54:27,449 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 18:54:27,489 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 18:54:27,489 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 18:54:27,489 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 18:54:27,489 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 18:54:27,489 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 18:54:27,489 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 18:54:27,490 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 18:54:27,490 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 18:54:27,514 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states. [2020-10-28 18:54:27,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-28 18:54:27,522 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:54:27,523 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] [2020-10-28 18:54:27,524 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:54:27,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:54:27,531 INFO L82 PathProgramCache]: Analyzing trace with hash -1411810681, now seen corresponding path program 1 times [2020-10-28 18:54:27,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:54:27,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1285010075] [2020-10-28 18:54:27,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:54:27,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:54:27,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:54:28,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:54:28,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:54:29,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:54:29,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-28 18:54:29,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 18:54:29,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2161 [2020-10-28 18:54:29,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:54:29,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:54:29,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:54:29,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-28 18:54:29,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 18:54:29,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 18:54:30,305 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-28 18:54:30,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:54:30,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:54:30,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:54:30,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:54:30,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:54:30,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:54:30,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 18:54:30,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:54:30,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:54:30,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:54:30,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:54:30,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:54:30,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:54:30,369 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 18:54:30,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1285010075] [2020-10-28 18:54:30,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:54:30,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:54:30,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064347986] [2020-10-28 18:54:30,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:54:30,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:54:30,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:54:30,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:54:30,398 INFO L87 Difference]: Start difference. First operand 171 states. Second operand 4 states. [2020-10-28 18:54:30,638 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-28 18:54:31,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:54:31,632 INFO L93 Difference]: Finished difference Result 323 states and 519 transitions. [2020-10-28 18:54:31,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:54:31,635 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2020-10-28 18:54:31,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:54:31,650 INFO L225 Difference]: With dead ends: 323 [2020-10-28 18:54:31,650 INFO L226 Difference]: Without dead ends: 243 [2020-10-28 18:54:31,655 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 18:54:31,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2020-10-28 18:54:31,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 240. [2020-10-28 18:54:31,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240 states. [2020-10-28 18:54:31,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 354 transitions. [2020-10-28 18:54:31,734 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 354 transitions. Word has length 55 [2020-10-28 18:54:31,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:54:31,735 INFO L481 AbstractCegarLoop]: Abstraction has 240 states and 354 transitions. [2020-10-28 18:54:31,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:54:31,735 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 354 transitions. [2020-10-28 18:54:31,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-28 18:54:31,738 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:54:31,738 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 18:54:31,739 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 18:54:31,739 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:54:31,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:54:31,740 INFO L82 PathProgramCache]: Analyzing trace with hash -1521986906, now seen corresponding path program 1 times [2020-10-28 18:54:31,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:54:31,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [755112400] [2020-10-28 18:54:31,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:54:31,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:54:31,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:54:31,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:54:31,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:54:32,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:54:33,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:54:36,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:54:36,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-28 18:54:36,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 18:54:36,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-28 18:54:36,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:54:36,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:54:36,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:54:36,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-28 18:54:36,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 18:54:36,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 18:54:37,085 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-28 18:54:37,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:54:37,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:54:37,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:54:37,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:54:37,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:54:37,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:54:37,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 18:54:37,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:54:37,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:54:37,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:54:37,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:54:37,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:54:37,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:54:37,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 18:54:37,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [755112400] [2020-10-28 18:54:37,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:54:37,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:54:37,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630622696] [2020-10-28 18:54:37,148 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:54:37,149 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:54:37,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:54:37,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:54:37,151 INFO L87 Difference]: Start difference. First operand 240 states and 354 transitions. Second operand 4 states. [2020-10-28 18:54:37,499 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-28 18:54:38,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:54:38,365 INFO L93 Difference]: Finished difference Result 578 states and 874 transitions. [2020-10-28 18:54:38,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:54:38,366 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2020-10-28 18:54:38,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:54:38,375 INFO L225 Difference]: With dead ends: 578 [2020-10-28 18:54:38,376 INFO L226 Difference]: Without dead ends: 410 [2020-10-28 18:54:38,378 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 18:54:38,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2020-10-28 18:54:38,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 407. [2020-10-28 18:54:38,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 407 states. [2020-10-28 18:54:38,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 604 transitions. [2020-10-28 18:54:38,446 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 604 transitions. Word has length 58 [2020-10-28 18:54:38,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:54:38,446 INFO L481 AbstractCegarLoop]: Abstraction has 407 states and 604 transitions. [2020-10-28 18:54:38,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:54:38,446 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 604 transitions. [2020-10-28 18:54:38,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-28 18:54:38,449 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:54:38,449 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 18:54:38,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 18:54:38,450 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:54:38,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:54:38,451 INFO L82 PathProgramCache]: Analyzing trace with hash 1260689956, now seen corresponding path program 1 times [2020-10-28 18:54:38,451 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:54:38,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1231682660] [2020-10-28 18:54:38,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:54:38,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:54:38,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:54:38,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:54:38,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:54:38,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:54:38,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:54:43,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:54:43,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-28 18:54:43,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 18:54:43,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 18:54:43,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:54:43,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:54:43,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:54:43,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-28 18:54:43,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 18:54:43,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 18:54:43,799 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-28 18:54:43,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:54:43,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:54:43,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:54:43,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:54:43,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:54:43,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:54:43,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 18:54:43,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:54:43,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:54:43,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:54:43,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:54:43,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:54:43,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:54:43,845 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 18:54:43,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1231682660] [2020-10-28 18:54:43,846 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:54:43,846 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:54:43,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780963220] [2020-10-28 18:54:43,848 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:54:43,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:54:43,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:54:43,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:54:43,850 INFO L87 Difference]: Start difference. First operand 407 states and 604 transitions. Second operand 4 states. [2020-10-28 18:54:44,102 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-28 18:54:44,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:54:44,791 INFO L93 Difference]: Finished difference Result 985 states and 1482 transitions. [2020-10-28 18:54:44,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:54:44,793 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2020-10-28 18:54:44,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:54:44,798 INFO L225 Difference]: With dead ends: 985 [2020-10-28 18:54:44,798 INFO L226 Difference]: Without dead ends: 698 [2020-10-28 18:54:44,800 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 18:54:44,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2020-10-28 18:54:44,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 695. [2020-10-28 18:54:44,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-10-28 18:54:44,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 1026 transitions. [2020-10-28 18:54:44,846 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 1026 transitions. Word has length 58 [2020-10-28 18:54:44,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:54:44,847 INFO L481 AbstractCegarLoop]: Abstraction has 695 states and 1026 transitions. [2020-10-28 18:54:44,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:54:44,847 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 1026 transitions. [2020-10-28 18:54:44,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-28 18:54:44,851 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:54:44,851 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 18:54:44,851 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 18:54:44,852 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:54:44,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:54:44,852 INFO L82 PathProgramCache]: Analyzing trace with hash 1777280484, now seen corresponding path program 1 times [2020-10-28 18:54:44,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:54:44,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1691930899] [2020-10-28 18:54:44,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:54:44,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:54:44,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:54:44,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:54:44,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:54:44,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:54:45,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:54:49,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:54:49,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-28 18:54:49,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 18:54:49,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 18:54:49,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:54:49,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:54:49,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:54:49,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-28 18:54:49,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 18:54:49,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:54:50,135 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-28 18:54:50,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:54:50,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:54:50,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:54:50,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:54:50,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:54:50,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:54:50,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 18:54:50,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:54:50,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:54:50,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:54:50,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:54:50,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:54:50,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:54:50,179 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 18:54:50,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1691930899] [2020-10-28 18:54:50,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:54:50,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 18:54:50,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011320439] [2020-10-28 18:54:50,181 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 18:54:50,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:54:50,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 18:54:50,182 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 18:54:50,182 INFO L87 Difference]: Start difference. First operand 695 states and 1026 transitions. Second operand 4 states. [2020-10-28 18:54:50,411 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 146 [2020-10-28 18:54:51,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:54:51,368 INFO L93 Difference]: Finished difference Result 1775 states and 2632 transitions. [2020-10-28 18:54:51,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 18:54:51,369 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2020-10-28 18:54:51,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:54:51,376 INFO L225 Difference]: With dead ends: 1775 [2020-10-28 18:54:51,376 INFO L226 Difference]: Without dead ends: 1176 [2020-10-28 18:54:51,380 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 18:54:51,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1176 states. [2020-10-28 18:54:51,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1176 to 1173. [2020-10-28 18:54:51,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1173 states. [2020-10-28 18:54:51,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1173 states to 1173 states and 1696 transitions. [2020-10-28 18:54:51,452 INFO L78 Accepts]: Start accepts. Automaton has 1173 states and 1696 transitions. Word has length 58 [2020-10-28 18:54:51,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:54:51,453 INFO L481 AbstractCegarLoop]: Abstraction has 1173 states and 1696 transitions. [2020-10-28 18:54:51,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 18:54:51,453 INFO L276 IsEmpty]: Start isEmpty. Operand 1173 states and 1696 transitions. [2020-10-28 18:54:51,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-28 18:54:51,457 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:54:51,457 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 18:54:51,457 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 18:54:51,457 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:54:51,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:54:51,458 INFO L82 PathProgramCache]: Analyzing trace with hash 352662626, now seen corresponding path program 1 times [2020-10-28 18:54:51,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:54:51,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [353413455] [2020-10-28 18:54:51,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:54:51,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:54:51,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:54:51,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:54:51,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:54:51,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:54:51,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:54:54,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:54:54,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-28 18:54:54,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 18:54:54,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2971 [2020-10-28 18:54:54,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:54:54,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:54:54,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 18:54:54,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:54:54,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-28 18:54:54,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:54:54,861 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-28 18:54:54,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:54:54,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:54:54,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:54:54,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:54:54,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:54:54,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:54:54,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 18:54:54,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:54:54,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:54:54,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:54:54,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:54:54,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:54:54,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:54:54,922 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 18:54:54,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [353413455] [2020-10-28 18:54:54,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:54:54,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 18:54:54,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381841666] [2020-10-28 18:54:54,924 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 18:54:54,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:54:54,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 18:54:54,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-28 18:54:54,925 INFO L87 Difference]: Start difference. First operand 1173 states and 1696 transitions. Second operand 8 states. [2020-10-28 18:54:55,159 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-28 18:54:55,926 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-28 18:54:56,868 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-28 18:54:57,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:54:57,088 INFO L93 Difference]: Finished difference Result 5019 states and 7330 transitions. [2020-10-28 18:54:57,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 18:54:57,089 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 59 [2020-10-28 18:54:57,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:54:57,114 INFO L225 Difference]: With dead ends: 5019 [2020-10-28 18:54:57,114 INFO L226 Difference]: Without dead ends: 4212 [2020-10-28 18:54:57,119 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-10-28 18:54:57,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4212 states. [2020-10-28 18:54:57,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4212 to 1271. [2020-10-28 18:54:57,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1271 states. [2020-10-28 18:54:57,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1271 states to 1271 states and 1802 transitions. [2020-10-28 18:54:57,263 INFO L78 Accepts]: Start accepts. Automaton has 1271 states and 1802 transitions. Word has length 59 [2020-10-28 18:54:57,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:54:57,264 INFO L481 AbstractCegarLoop]: Abstraction has 1271 states and 1802 transitions. [2020-10-28 18:54:57,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 18:54:57,264 INFO L276 IsEmpty]: Start isEmpty. Operand 1271 states and 1802 transitions. [2020-10-28 18:54:57,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-28 18:54:57,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:54:57,266 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 18:54:57,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 18:54:57,267 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:54:57,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:54:57,267 INFO L82 PathProgramCache]: Analyzing trace with hash 1062520981, now seen corresponding path program 1 times [2020-10-28 18:54:57,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:54:57,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [215644003] [2020-10-28 18:54:57,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:54:57,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:54:57,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:54:57,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:54:57,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:54:57,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:54:57,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:00,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:55:00,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-28 18:55:00,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 18:55:00,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3223 [2020-10-28 18:55:00,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:55:00,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:55:00,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 18:55:00,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:55:00,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-28 18:55:00,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:55:00,792 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-28 18:55:00,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:55:00,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:55:00,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:00,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:55:00,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:55:00,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:55:00,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 18:55:00,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:55:00,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:55:00,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:55:00,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:55:00,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:55:00,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:55:00,850 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 18:55:00,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [215644003] [2020-10-28 18:55:00,852 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:55:00,852 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 18:55:00,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200350471] [2020-10-28 18:55:00,853 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 18:55:00,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:55:00,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 18:55:00,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-28 18:55:00,854 INFO L87 Difference]: Start difference. First operand 1271 states and 1802 transitions. Second operand 8 states. [2020-10-28 18:55:01,115 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-28 18:55:01,938 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-28 18:55:02,874 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-28 18:55:03,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:55:03,152 INFO L93 Difference]: Finished difference Result 5665 states and 8095 transitions. [2020-10-28 18:55:03,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 18:55:03,153 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 59 [2020-10-28 18:55:03,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:55:03,179 INFO L225 Difference]: With dead ends: 5665 [2020-10-28 18:55:03,179 INFO L226 Difference]: Without dead ends: 5266 [2020-10-28 18:55:03,183 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-10-28 18:55:03,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5266 states. [2020-10-28 18:55:03,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5266 to 1315. [2020-10-28 18:55:03,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1315 states. [2020-10-28 18:55:03,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1315 states to 1315 states and 1860 transitions. [2020-10-28 18:55:03,354 INFO L78 Accepts]: Start accepts. Automaton has 1315 states and 1860 transitions. Word has length 59 [2020-10-28 18:55:03,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:55:03,354 INFO L481 AbstractCegarLoop]: Abstraction has 1315 states and 1860 transitions. [2020-10-28 18:55:03,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 18:55:03,355 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states and 1860 transitions. [2020-10-28 18:55:03,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-28 18:55:03,357 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:55:03,357 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 18:55:03,357 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 18:55:03,357 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:55:03,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:55:03,358 INFO L82 PathProgramCache]: Analyzing trace with hash -1300051068, now seen corresponding path program 1 times [2020-10-28 18:55:03,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:55:03,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1152913579] [2020-10-28 18:55:03,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:55:03,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:55:03,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:03,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:03,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:03,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:03,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:06,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:55:06,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-28 18:55:06,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 18:55:06,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2794 [2020-10-28 18:55:06,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:55:06,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:55:06,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 18:55:06,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:55:06,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-28 18:55:06,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:55:06,601 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-28 18:55:06,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:55:06,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:55:06,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:06,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:55:06,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:55:06,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:55:06,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 18:55:06,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:55:06,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:55:06,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:55:06,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:55:06,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:55:06,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:55:06,679 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 18:55:06,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1152913579] [2020-10-28 18:55:06,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:55:06,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 18:55:06,681 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732638956] [2020-10-28 18:55:06,681 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 18:55:06,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:55:06,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 18:55:06,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-28 18:55:06,683 INFO L87 Difference]: Start difference. First operand 1315 states and 1860 transitions. Second operand 8 states. [2020-10-28 18:55:06,943 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-28 18:55:07,702 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-28 18:55:08,543 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-28 18:55:08,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:55:08,822 INFO L93 Difference]: Finished difference Result 4666 states and 6664 transitions. [2020-10-28 18:55:08,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 18:55:08,823 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 59 [2020-10-28 18:55:08,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:55:08,842 INFO L225 Difference]: With dead ends: 4666 [2020-10-28 18:55:08,842 INFO L226 Difference]: Without dead ends: 3773 [2020-10-28 18:55:08,847 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-10-28 18:55:08,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3773 states. [2020-10-28 18:55:09,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3773 to 1364. [2020-10-28 18:55:09,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1364 states. [2020-10-28 18:55:09,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1364 states to 1364 states and 1893 transitions. [2020-10-28 18:55:09,019 INFO L78 Accepts]: Start accepts. Automaton has 1364 states and 1893 transitions. Word has length 59 [2020-10-28 18:55:09,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:55:09,019 INFO L481 AbstractCegarLoop]: Abstraction has 1364 states and 1893 transitions. [2020-10-28 18:55:09,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 18:55:09,019 INFO L276 IsEmpty]: Start isEmpty. Operand 1364 states and 1893 transitions. [2020-10-28 18:55:09,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-28 18:55:09,021 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:55:09,021 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 18:55:09,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 18:55:09,022 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:55:09,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:55:09,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1131971501, now seen corresponding path program 1 times [2020-10-28 18:55:09,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:55:09,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [962170667] [2020-10-28 18:55:09,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:55:09,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:55:09,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:09,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:09,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:09,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:09,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:09,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:09,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:09,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:10,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:10,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:10,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:10,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:14,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:55:14,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-28 18:55:14,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 18:55:14,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 18:55:14,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:55:14,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:55:14,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:55:14,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 18:55:14,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-28 18:55:14,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:55:14,360 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-28 18:55:14,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:55:14,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:55:14,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:14,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:55:14,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:55:14,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:55:14,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 18:55:14,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:55:14,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:55:14,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:55:14,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:55:14,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:55:14,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:55:14,416 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 18:55:14,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [962170667] [2020-10-28 18:55:14,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:55:14,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 18:55:14,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157562251] [2020-10-28 18:55:14,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:55:14,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:55:14,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:55:14,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:55:14,421 INFO L87 Difference]: Start difference. First operand 1364 states and 1893 transitions. Second operand 6 states. [2020-10-28 18:55:14,775 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-28 18:55:15,470 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-28 18:55:16,304 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-28 18:55:16,508 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-28 18:55:16,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:55:16,604 INFO L93 Difference]: Finished difference Result 3357 states and 4769 transitions. [2020-10-28 18:55:16,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 18:55:16,604 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-10-28 18:55:16,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:55:16,616 INFO L225 Difference]: With dead ends: 3357 [2020-10-28 18:55:16,617 INFO L226 Difference]: Without dead ends: 2642 [2020-10-28 18:55:16,619 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 18:55:16,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2642 states. [2020-10-28 18:55:16,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2642 to 1601. [2020-10-28 18:55:16,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1601 states. [2020-10-28 18:55:16,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1601 states to 1601 states and 2241 transitions. [2020-10-28 18:55:16,796 INFO L78 Accepts]: Start accepts. Automaton has 1601 states and 2241 transitions. Word has length 60 [2020-10-28 18:55:16,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:55:16,796 INFO L481 AbstractCegarLoop]: Abstraction has 1601 states and 2241 transitions. [2020-10-28 18:55:16,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:55:16,796 INFO L276 IsEmpty]: Start isEmpty. Operand 1601 states and 2241 transitions. [2020-10-28 18:55:16,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-28 18:55:16,798 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:55:16,798 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 18:55:16,799 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 18:55:16,799 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:55:16,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:55:16,799 INFO L82 PathProgramCache]: Analyzing trace with hash -38744446, now seen corresponding path program 1 times [2020-10-28 18:55:16,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:55:16,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [796306888] [2020-10-28 18:55:16,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:55:16,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:55:16,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:16,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:16,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:16,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:17,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:17,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:17,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:17,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:17,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:18,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:20,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:20,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:21,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:55:21,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-28 18:55:21,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 18:55:21,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 18:55:21,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:55:21,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:55:21,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:55:21,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 18:55:21,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-28 18:55:21,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:55:22,069 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-28 18:55:22,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:55:22,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:55:22,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:22,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:55:22,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:55:22,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:55:22,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 18:55:22,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:55:22,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:55:22,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:55:22,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:55:22,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:55:22,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 18:55:22,103 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 18:55:22,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [796306888] [2020-10-28 18:55:22,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:55:22,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 18:55:22,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761156139] [2020-10-28 18:55:22,104 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:55:22,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:55:22,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:55:22,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:55:22,106 INFO L87 Difference]: Start difference. First operand 1601 states and 2241 transitions. Second operand 6 states. [2020-10-28 18:55:22,353 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-28 18:55:23,139 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-28 18:55:23,847 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-28 18:55:24,077 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-28 18:55:24,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:55:24,208 INFO L93 Difference]: Finished difference Result 3915 states and 5571 transitions. [2020-10-28 18:55:24,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 18:55:24,209 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-10-28 18:55:24,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:55:24,224 INFO L225 Difference]: With dead ends: 3915 [2020-10-28 18:55:24,224 INFO L226 Difference]: Without dead ends: 3200 [2020-10-28 18:55:24,228 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-28 18:55:24,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3200 states. [2020-10-28 18:55:24,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3200 to 1947. [2020-10-28 18:55:24,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1947 states. [2020-10-28 18:55:24,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1947 states to 1947 states and 2758 transitions. [2020-10-28 18:55:24,479 INFO L78 Accepts]: Start accepts. Automaton has 1947 states and 2758 transitions. Word has length 60 [2020-10-28 18:55:24,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:55:24,479 INFO L481 AbstractCegarLoop]: Abstraction has 1947 states and 2758 transitions. [2020-10-28 18:55:24,479 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:55:24,479 INFO L276 IsEmpty]: Start isEmpty. Operand 1947 states and 2758 transitions. [2020-10-28 18:55:24,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-28 18:55:24,481 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:55:24,482 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 18:55:24,482 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 18:55:24,482 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:55:24,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:55:24,483 INFO L82 PathProgramCache]: Analyzing trace with hash 154523381, now seen corresponding path program 1 times [2020-10-28 18:55:24,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:55:24,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2098865640] [2020-10-28 18:55:24,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:55:24,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:55:24,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:24,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:24,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:24,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:24,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:24,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:25,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:25,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:25,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:26,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:26,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:26,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:29,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:55:29,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-28 18:55:29,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-28 18:55:29,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 18:55:29,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:55:29,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:55:29,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:55:29,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 18:55:29,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-28 18:55:29,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:55:29,731 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-28 18:55:29,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:55:29,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:55:29,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:29,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:55:29,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:55:29,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:55:29,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 18:55:29,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:55:29,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:55:29,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:55:29,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:55:29,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:55:29,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:55:29,760 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 18:55:29,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2098865640] [2020-10-28 18:55:29,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:55:29,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 18:55:29,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855110579] [2020-10-28 18:55:29,761 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:55:29,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:55:29,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:55:29,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:55:29,762 INFO L87 Difference]: Start difference. First operand 1947 states and 2758 transitions. Second operand 6 states. [2020-10-28 18:55:30,037 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-28 18:55:30,729 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-28 18:55:31,388 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-28 18:55:31,614 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 145 [2020-10-28 18:55:31,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:55:31,748 INFO L93 Difference]: Finished difference Result 4330 states and 6173 transitions. [2020-10-28 18:55:31,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 18:55:31,748 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 60 [2020-10-28 18:55:31,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:55:31,767 INFO L225 Difference]: With dead ends: 4330 [2020-10-28 18:55:31,767 INFO L226 Difference]: Without dead ends: 3615 [2020-10-28 18:55:31,771 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-28 18:55:31,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3615 states. [2020-10-28 18:55:32,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3615 to 2333. [2020-10-28 18:55:32,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2333 states. [2020-10-28 18:55:32,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2333 states to 2333 states and 3321 transitions. [2020-10-28 18:55:32,134 INFO L78 Accepts]: Start accepts. Automaton has 2333 states and 3321 transitions. Word has length 60 [2020-10-28 18:55:32,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:55:32,135 INFO L481 AbstractCegarLoop]: Abstraction has 2333 states and 3321 transitions. [2020-10-28 18:55:32,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:55:32,135 INFO L276 IsEmpty]: Start isEmpty. Operand 2333 states and 3321 transitions. [2020-10-28 18:55:32,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-28 18:55:32,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:55:32,138 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, 1, 1, 1, 1] [2020-10-28 18:55:32,138 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 18:55:32,138 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:55:32,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:55:32,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1286147210, now seen corresponding path program 1 times [2020-10-28 18:55:32,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:55:32,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1138988761] [2020-10-28 18:55:32,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:55:32,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:55:32,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:32,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:32,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:32,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:32,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:32,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:32,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:32,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:32,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:32,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:32,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:33,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:36,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:36,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:36,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:36,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:36,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:36,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:36,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:37,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:37,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:37,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:55:37,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 18:55:37,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-28 18:55:37,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 18:55:37,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:55:37,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:55:37,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:55:37,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-28 18:55:37,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-28 18:55:37,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:55:37,407 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-28 18:55:37,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:55:37,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:55:37,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:37,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:55:37,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:55:37,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:55:37,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 18:55:37,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:55:37,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:55:37,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:55:37,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:55:37,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:55:37,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:55:37,437 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 18:55:37,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1138988761] [2020-10-28 18:55:37,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:55:37,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 18:55:37,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269378596] [2020-10-28 18:55:37,439 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:55:37,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:55:37,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:55:37,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:55:37,440 INFO L87 Difference]: Start difference. First operand 2333 states and 3321 transitions. Second operand 6 states. [2020-10-28 18:55:37,676 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-28 18:55:38,928 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-28 18:55:39,279 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-28 18:55:41,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:55:41,372 INFO L93 Difference]: Finished difference Result 15265 states and 22235 transitions. [2020-10-28 18:55:41,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 18:55:41,373 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-10-28 18:55:41,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:55:41,404 INFO L225 Difference]: With dead ends: 15265 [2020-10-28 18:55:41,405 INFO L226 Difference]: Without dead ends: 13387 [2020-10-28 18:55:41,414 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-28 18:55:41,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13387 states. [2020-10-28 18:55:42,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13387 to 7346. [2020-10-28 18:55:42,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7346 states. [2020-10-28 18:55:42,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7346 states to 7346 states and 10614 transitions. [2020-10-28 18:55:42,367 INFO L78 Accepts]: Start accepts. Automaton has 7346 states and 10614 transitions. Word has length 64 [2020-10-28 18:55:42,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:55:42,367 INFO L481 AbstractCegarLoop]: Abstraction has 7346 states and 10614 transitions. [2020-10-28 18:55:42,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:55:42,368 INFO L276 IsEmpty]: Start isEmpty. Operand 7346 states and 10614 transitions. [2020-10-28 18:55:42,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-28 18:55:42,372 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:55:42,372 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] [2020-10-28 18:55:42,372 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 18:55:42,372 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:55:42,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:55:42,373 INFO L82 PathProgramCache]: Analyzing trace with hash -1625610246, now seen corresponding path program 1 times [2020-10-28 18:55:42,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:55:42,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [604203601] [2020-10-28 18:55:42,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:55:42,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:55:42,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:42,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:42,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:42,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:42,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:43,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:43,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:43,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:43,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:43,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:43,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:43,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:44,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:47,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:55:47,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 18:55:47,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 18:55:47,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 18:55:47,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:55:47,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:55:47,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:55:47,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:55:47,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-28 18:55:47,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:55:47,624 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-28 18:55:47,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:55:47,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:55:47,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:47,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:55:47,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:55:47,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:55:47,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 18:55:47,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:55:47,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:55:47,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:55:47,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:55:47,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:55:47,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:55:47,658 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 18:55:47,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [604203601] [2020-10-28 18:55:47,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:55:47,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:55:47,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354412932] [2020-10-28 18:55:47,659 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:55:47,659 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:55:47,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:55:47,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:55:47,660 INFO L87 Difference]: Start difference. First operand 7346 states and 10614 transitions. Second operand 6 states. [2020-10-28 18:55:47,928 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-28 18:55:48,768 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 147 [2020-10-28 18:55:49,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:55:49,405 INFO L93 Difference]: Finished difference Result 9864 states and 14283 transitions. [2020-10-28 18:55:49,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 18:55:49,407 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 64 [2020-10-28 18:55:49,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:55:49,420 INFO L225 Difference]: With dead ends: 9864 [2020-10-28 18:55:49,420 INFO L226 Difference]: Without dead ends: 4421 [2020-10-28 18:55:49,433 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-28 18:55:49,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4421 states. [2020-10-28 18:55:49,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4421 to 4405. [2020-10-28 18:55:49,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4405 states. [2020-10-28 18:55:49,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4405 states to 4405 states and 6304 transitions. [2020-10-28 18:55:49,919 INFO L78 Accepts]: Start accepts. Automaton has 4405 states and 6304 transitions. Word has length 64 [2020-10-28 18:55:49,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:55:49,920 INFO L481 AbstractCegarLoop]: Abstraction has 4405 states and 6304 transitions. [2020-10-28 18:55:49,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:55:49,920 INFO L276 IsEmpty]: Start isEmpty. Operand 4405 states and 6304 transitions. [2020-10-28 18:55:49,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-28 18:55:49,922 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:55:49,922 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 18:55:49,922 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 18:55:49,923 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:55:49,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:55:49,923 INFO L82 PathProgramCache]: Analyzing trace with hash 884572129, now seen corresponding path program 1 times [2020-10-28 18:55:49,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:55:49,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [332399430] [2020-10-28 18:55:49,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:55:49,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:55:49,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:49,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:50,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:50,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:50,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:50,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:50,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:50,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:50,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:51,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:53,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:54,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:54,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:54,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:54,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:55:54,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 18:55:54,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 18:55:54,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-28 18:55:54,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:55:54,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:55:54,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:55:54,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-28 18:55:54,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-28 18:55:54,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:55:55,204 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-28 18:55:55,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:55:55,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:55:55,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:55:55,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:55:55,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:55:55,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:55:55,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 18:55:55,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:55:55,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:55:55,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:55:55,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:55:55,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:55:55,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:55:55,232 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 18:55:55,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [332399430] [2020-10-28 18:55:55,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:55:55,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 18:55:55,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655059548] [2020-10-28 18:55:55,234 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:55:55,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:55:55,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:55:55,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:55:55,235 INFO L87 Difference]: Start difference. First operand 4405 states and 6304 transitions. Second operand 6 states. [2020-10-28 18:55:55,463 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-28 18:55:56,929 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-28 18:55:57,273 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-28 18:56:00,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:56:00,624 INFO L93 Difference]: Finished difference Result 33005 states and 47968 transitions. [2020-10-28 18:56:00,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 18:56:00,625 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-10-28 18:56:00,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:56:00,682 INFO L225 Difference]: With dead ends: 33005 [2020-10-28 18:56:00,682 INFO L226 Difference]: Without dead ends: 29064 [2020-10-28 18:56:00,698 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 18:56:00,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29064 states. [2020-10-28 18:56:02,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29064 to 15311. [2020-10-28 18:56:02,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15311 states. [2020-10-28 18:56:02,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15311 states to 15311 states and 22126 transitions. [2020-10-28 18:56:02,668 INFO L78 Accepts]: Start accepts. Automaton has 15311 states and 22126 transitions. Word has length 65 [2020-10-28 18:56:02,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:56:02,668 INFO L481 AbstractCegarLoop]: Abstraction has 15311 states and 22126 transitions. [2020-10-28 18:56:02,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:56:02,668 INFO L276 IsEmpty]: Start isEmpty. Operand 15311 states and 22126 transitions. [2020-10-28 18:56:02,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-28 18:56:02,672 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:56:02,672 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 18:56:02,673 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 18:56:02,673 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:56:02,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:56:02,673 INFO L82 PathProgramCache]: Analyzing trace with hash -967181341, now seen corresponding path program 1 times [2020-10-28 18:56:02,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:56:02,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1523623679] [2020-10-28 18:56:02,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:56:02,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:56:02,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:02,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:02,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:02,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:02,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:03,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:03,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:03,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:03,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:05,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:06,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:06,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:06,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:06,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:06,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:06,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:07,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:07,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:07,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:07,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:56:07,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 18:56:07,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-28 18:56:07,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 18:56:07,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:56:07,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:56:07,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:56:07,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-28 18:56:07,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-28 18:56:07,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:56:07,930 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-28 18:56:07,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:56:07,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:56:07,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:07,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:56:07,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:56:07,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:56:07,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 18:56:07,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:56:07,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:56:07,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 18:56:07,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:56:07,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 18:56:07,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:56:07,951 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 18:56:07,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1523623679] [2020-10-28 18:56:07,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:56:07,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 18:56:07,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426706883] [2020-10-28 18:56:07,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:56:07,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:56:07,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:56:07,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:56:07,953 INFO L87 Difference]: Start difference. First operand 15311 states and 22126 transitions. Second operand 6 states. [2020-10-28 18:56:08,187 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-28 18:56:10,081 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2020-10-28 18:56:10,515 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 143 [2020-10-28 18:56:22,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:56:22,851 INFO L93 Difference]: Finished difference Result 123943 states and 179154 transitions. [2020-10-28 18:56:22,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 18:56:22,851 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 65 [2020-10-28 18:56:22,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:56:23,097 INFO L225 Difference]: With dead ends: 123943 [2020-10-28 18:56:23,097 INFO L226 Difference]: Without dead ends: 109349 [2020-10-28 18:56:23,152 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-28 18:56:23,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109349 states. [2020-10-28 18:56:31,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109349 to 56268. [2020-10-28 18:56:31,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56268 states. [2020-10-28 18:56:31,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56268 states to 56268 states and 80752 transitions. [2020-10-28 18:56:31,105 INFO L78 Accepts]: Start accepts. Automaton has 56268 states and 80752 transitions. Word has length 65 [2020-10-28 18:56:31,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:56:31,106 INFO L481 AbstractCegarLoop]: Abstraction has 56268 states and 80752 transitions. [2020-10-28 18:56:31,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:56:31,106 INFO L276 IsEmpty]: Start isEmpty. Operand 56268 states and 80752 transitions. [2020-10-28 18:56:31,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-28 18:56:31,118 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:56:31,118 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:56:31,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 18:56:31,119 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:56:31,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:56:31,119 INFO L82 PathProgramCache]: Analyzing trace with hash -1993214981, now seen corresponding path program 1 times [2020-10-28 18:56:31,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:56:31,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [975954391] [2020-10-28 18:56:31,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:56:31,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:56:31,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:31,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:31,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:31,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:31,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:31,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:31,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:32,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:32,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:32,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:33,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:33,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:33,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:33,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:33,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:33,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:34,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:34,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:35,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:35,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:36,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:56:36,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 18:56:36,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-28 18:56:36,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 18:56:36,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:56:36,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:56:36,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:56:36,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:56:36,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 18:56:36,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:56:36,423 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-28 18:56:36,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:56:36,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:56:36,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:36,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:56:36,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:56:36,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:56:36,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 18:56:36,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:56:36,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:56:36,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:56:36,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:56:36,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:56:36,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:56:36,471 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 18:56:36,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [975954391] [2020-10-28 18:56:36,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:56:36,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:56:36,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953905838] [2020-10-28 18:56:36,473 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:56:36,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:56:36,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:56:36,473 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:56:36,474 INFO L87 Difference]: Start difference. First operand 56268 states and 80752 transitions. Second operand 6 states. [2020-10-28 18:56:36,732 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-28 18:56:37,829 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-28 18:56:42,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:56:42,588 INFO L93 Difference]: Finished difference Result 86694 states and 124529 transitions. [2020-10-28 18:56:42,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 18:56:42,588 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-10-28 18:56:42,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:56:42,675 INFO L225 Difference]: With dead ends: 86694 [2020-10-28 18:56:42,676 INFO L226 Difference]: Without dead ends: 41497 [2020-10-28 18:56:42,750 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-28 18:56:42,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41497 states. [2020-10-28 18:56:47,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41497 to 41347. [2020-10-28 18:56:47,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41347 states. [2020-10-28 18:56:47,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41347 states to 41347 states and 59055 transitions. [2020-10-28 18:56:47,847 INFO L78 Accepts]: Start accepts. Automaton has 41347 states and 59055 transitions. Word has length 66 [2020-10-28 18:56:47,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:56:47,847 INFO L481 AbstractCegarLoop]: Abstraction has 41347 states and 59055 transitions. [2020-10-28 18:56:47,848 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:56:47,848 INFO L276 IsEmpty]: Start isEmpty. Operand 41347 states and 59055 transitions. [2020-10-28 18:56:47,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-28 18:56:47,855 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:56:47,855 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:56:47,855 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 18:56:47,856 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:56:47,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:56:47,856 INFO L82 PathProgramCache]: Analyzing trace with hash 1396531320, now seen corresponding path program 1 times [2020-10-28 18:56:47,856 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:56:47,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1346500095] [2020-10-28 18:56:47,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:56:47,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:56:47,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:47,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:47,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:48,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:48,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:48,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:48,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:48,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:48,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:49,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:49,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:49,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:49,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:50,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:50,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:51,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:51,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:51,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:51,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:52,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:52,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:52,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:52,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:56:52,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 18:56:52,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-10-28 18:56:52,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-28 18:56:52,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:56:52,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:56:52,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 18:56:52,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:56:52,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 18:56:52,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:56:53,131 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-28 18:56:53,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:56:53,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:56:53,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:56:53,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:56:53,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:56:53,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:56:53,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 18:56:53,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:56:53,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:56:53,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:56:53,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:56:53,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:56:53,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:56:53,167 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 18:56:53,168 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1346500095] [2020-10-28 18:56:53,168 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:56:53,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 18:56:53,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008038551] [2020-10-28 18:56:53,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 18:56:53,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:56:53,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 18:56:53,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 18:56:53,170 INFO L87 Difference]: Start difference. First operand 41347 states and 59055 transitions. Second operand 6 states. [2020-10-28 18:56:53,435 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 151 [2020-10-28 18:56:54,368 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 149 [2020-10-28 18:56:57,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:56:57,917 INFO L93 Difference]: Finished difference Result 63875 states and 91522 transitions. [2020-10-28 18:56:57,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 18:56:57,917 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 66 [2020-10-28 18:56:57,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:56:57,953 INFO L225 Difference]: With dead ends: 63875 [2020-10-28 18:56:57,954 INFO L226 Difference]: Without dead ends: 30324 [2020-10-28 18:56:57,984 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-28 18:56:58,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30324 states. [2020-10-28 18:57:02,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30324 to 30228. [2020-10-28 18:57:02,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30228 states. [2020-10-28 18:57:02,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30228 states to 30228 states and 43149 transitions. [2020-10-28 18:57:02,197 INFO L78 Accepts]: Start accepts. Automaton has 30228 states and 43149 transitions. Word has length 66 [2020-10-28 18:57:02,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:57:02,198 INFO L481 AbstractCegarLoop]: Abstraction has 30228 states and 43149 transitions. [2020-10-28 18:57:02,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 18:57:02,198 INFO L276 IsEmpty]: Start isEmpty. Operand 30228 states and 43149 transitions. [2020-10-28 18:57:02,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-28 18:57:02,202 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:57:02,202 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:57:02,202 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 18:57:02,202 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:57:02,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:57:02,203 INFO L82 PathProgramCache]: Analyzing trace with hash -1732566522, now seen corresponding path program 1 times [2020-10-28 18:57:02,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:57:02,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1380202574] [2020-10-28 18:57:02,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:57:02,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:57:02,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:02,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:02,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:02,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:02,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:02,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:03,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:03,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:03,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:04,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:04,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:04,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:05,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:05,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:07,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:57:07,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 18:57:07,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-28 18:57:07,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 18:57:07,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:57:07,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:57:07,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 18:57:07,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:57:07,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-28 18:57:07,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:57:07,713 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-28 18:57:07,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:57:07,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:57:07,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:07,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:57:07,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:57:07,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:57:07,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 18:57:07,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:57:07,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:57:07,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:57:07,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:57:07,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:57:07,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:57:07,757 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 18:57:07,757 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1380202574] [2020-10-28 18:57:07,758 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:57:07,758 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-28 18:57:07,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199344851] [2020-10-28 18:57:07,758 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 18:57:07,758 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:57:07,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 18:57:07,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-10-28 18:57:07,759 INFO L87 Difference]: Start difference. First operand 30228 states and 43149 transitions. Second operand 13 states. [2020-10-28 18:57:08,412 WARN L193 SmtUtils]: Spent 526.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 163 [2020-10-28 18:57:09,839 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-10-28 18:57:10,107 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-10-28 18:57:12,844 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 18:57:18,281 WARN L193 SmtUtils]: Spent 494.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 158 [2020-10-28 18:57:18,922 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 152 [2020-10-28 18:57:44,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 18:57:44,958 INFO L93 Difference]: Finished difference Result 223162 states and 311749 transitions. [2020-10-28 18:57:44,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2020-10-28 18:57:44,959 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 67 [2020-10-28 18:57:44,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 18:57:45,457 INFO L225 Difference]: With dead ends: 223162 [2020-10-28 18:57:45,457 INFO L226 Difference]: Without dead ends: 197403 [2020-10-28 18:57:45,518 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2068 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=1082, Invalid=4468, Unknown=0, NotChecked=0, Total=5550 [2020-10-28 18:57:45,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197403 states. [2020-10-28 18:57:51,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197403 to 30213. [2020-10-28 18:57:51,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30213 states. [2020-10-28 18:57:51,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30213 states to 30213 states and 43130 transitions. [2020-10-28 18:57:51,806 INFO L78 Accepts]: Start accepts. Automaton has 30213 states and 43130 transitions. Word has length 67 [2020-10-28 18:57:51,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 18:57:51,806 INFO L481 AbstractCegarLoop]: Abstraction has 30213 states and 43130 transitions. [2020-10-28 18:57:51,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 18:57:51,806 INFO L276 IsEmpty]: Start isEmpty. Operand 30213 states and 43130 transitions. [2020-10-28 18:57:51,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-28 18:57:51,810 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 18:57:51,810 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 18:57:51,810 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 18:57:51,810 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 18:57:51,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 18:57:51,811 INFO L82 PathProgramCache]: Analyzing trace with hash -2072029558, now seen corresponding path program 1 times [2020-10-28 18:57:51,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 18:57:51,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [296229597] [2020-10-28 18:57:51,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 18:57:51,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:57:51,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:51,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:51,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:52,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:52,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:53,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:53,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:53,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:54,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:54,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:54,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:55,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:56,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:56,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:57:56,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 18:57:56,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-28 18:57:56,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-28 18:57:56,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:57:56,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:57:56,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 18:57:56,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 18:57:56,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-28 18:57:56,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:57:57,264 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification that was a NOOP. DAG size: 142 [2020-10-28 18:57:57,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 18:57:57,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 18:57:57,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 18:57:57,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 18:57:57,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 18:57:57,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 18:57:57,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 18:57:57,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 18:57:57,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 18:57:57,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 18:57:57,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 18:57:57,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 18:57:57,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 18:57:57,302 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 18:57:57,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [296229597] [2020-10-28 18:57:57,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 18:57:57,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-28 18:57:57,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062625728] [2020-10-28 18:57:57,305 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 18:57:57,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 18:57:57,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 18:57:57,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-28 18:57:57,306 INFO L87 Difference]: Start difference. First operand 30213 states and 43130 transitions. Second operand 11 states. [2020-10-28 18:57:57,609 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 154 [2020-10-28 18:57:59,438 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 150 [2020-10-28 18:57:59,881 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification that was a NOOP. DAG size: 146