/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label26.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 04:55:15,195 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 04:55:15,199 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 04:55:15,260 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 04:55:15,261 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 04:55:15,267 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 04:55:15,271 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 04:55:15,276 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 04:55:15,279 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 04:55:15,285 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 04:55:15,287 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 04:55:15,289 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 04:55:15,289 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 04:55:15,293 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 04:55:15,295 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 04:55:15,297 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 04:55:15,298 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 04:55:15,302 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 04:55:15,309 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 04:55:15,317 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 04:55:15,319 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 04:55:15,321 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 04:55:15,322 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 04:55:15,325 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 04:55:15,341 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 04:55:15,342 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 04:55:15,342 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 04:55:15,345 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 04:55:15,345 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 04:55:15,346 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 04:55:15,347 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 04:55:15,348 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 04:55:15,350 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 04:55:15,351 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 04:55:15,352 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 04:55:15,352 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 04:55:15,353 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 04:55:15,353 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 04:55:15,354 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 04:55:15,355 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 04:55:15,355 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 04:55:15,363 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 04:55:15,411 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 04:55:15,412 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 04:55:15,415 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 04:55:15,416 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 04:55:15,416 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 04:55:15,417 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 04:55:15,417 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 04:55:15,417 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 04:55:15,417 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 04:55:15,417 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 04:55:15,418 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 04:55:15,419 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 04:55:15,419 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 04:55:15,419 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 04:55:15,419 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 04:55:15,419 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 04:55:15,419 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 04:55:15,420 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 04:55:15,420 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 04:55:15,420 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 04:55:15,420 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 04:55:15,420 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 04:55:15,421 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 04:55:15,421 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 04:55:15,421 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 04:55:15,421 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 04:55:15,421 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 04:55:15,422 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 04:55:15,422 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 04:55:15,422 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 04:55:15,815 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 04:55:15,866 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 04:55:15,870 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 04:55:15,871 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 04:55:15,872 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 04:55:15,874 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label26.c [2020-10-29 04:55:15,965 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8f1f129a4/0ab0bab6924246058c6d8996128781db/FLAGb41ebcfad [2020-10-29 04:55:16,747 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 04:55:16,748 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label26.c [2020-10-29 04:55:16,771 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8f1f129a4/0ab0bab6924246058c6d8996128781db/FLAGb41ebcfad [2020-10-29 04:55:16,914 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8f1f129a4/0ab0bab6924246058c6d8996128781db [2020-10-29 04:55:16,925 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 04:55:16,933 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 04:55:16,938 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 04:55:16,938 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 04:55:16,942 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 04:55:16,943 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:55:16" (1/1) ... [2020-10-29 04:55:16,952 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ea0322d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:16, skipping insertion in model container [2020-10-29 04:55:16,952 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 04:55:16" (1/1) ... [2020-10-29 04:55:16,961 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 04:55:17,051 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 04:55:17,860 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 04:55:17,871 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 04:55:18,149 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 04:55:18,176 INFO L208 MainTranslator]: Completed translation [2020-10-29 04:55:18,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:18 WrapperNode [2020-10-29 04:55:18,178 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 04:55:18,179 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 04:55:18,180 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 04:55:18,180 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 04:55:18,194 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:18" (1/1) ... [2020-10-29 04:55:18,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:18" (1/1) ... [2020-10-29 04:55:18,254 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:18" (1/1) ... [2020-10-29 04:55:18,255 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:18" (1/1) ... [2020-10-29 04:55:18,358 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:18" (1/1) ... [2020-10-29 04:55:18,372 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:18" (1/1) ... [2020-10-29 04:55:18,386 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:18" (1/1) ... [2020-10-29 04:55:18,403 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 04:55:18,404 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 04:55:18,404 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 04:55:18,404 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 04:55:18,405 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:18" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 04:55:18,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 04:55:18,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 04:55:18,480 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 04:55:18,481 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 04:55:18,481 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 04:55:18,481 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 04:55:18,481 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 04:55:18,481 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 04:55:18,481 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 04:55:18,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 04:55:18,482 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 04:55:18,482 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 04:55:18,482 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 04:55:18,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 04:55:18,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 04:55:18,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 04:55:18,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 04:55:18,483 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 04:55:18,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 04:55:20,734 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 04:55:20,735 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 04:55:20,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:55:20 BoogieIcfgContainer [2020-10-29 04:55:20,737 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 04:55:20,739 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 04:55:20,739 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 04:55:20,743 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 04:55:20,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 04:55:16" (1/3) ... [2020-10-29 04:55:20,744 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3485637 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:55:20, skipping insertion in model container [2020-10-29 04:55:20,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 04:55:18" (2/3) ... [2020-10-29 04:55:20,745 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3485637 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 04:55:20, skipping insertion in model container [2020-10-29 04:55:20,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 04:55:20" (3/3) ... [2020-10-29 04:55:20,746 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label26.c [2020-10-29 04:55:20,760 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 04:55:20,765 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 04:55:20,780 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 04:55:20,811 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 04:55:20,811 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 04:55:20,811 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 04:55:20,811 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 04:55:20,812 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 04:55:20,812 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 04:55:20,812 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 04:55:20,812 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 04:55:20,838 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states. [2020-10-29 04:55:20,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-29 04:55:20,855 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:55:20,856 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:55:20,857 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:55:20,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:55:20,864 INFO L82 PathProgramCache]: Analyzing trace with hash -1608130892, now seen corresponding path program 1 times [2020-10-29 04:55:20,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:55:20,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [685411447] [2020-10-29 04:55:20,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:55:21,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:21,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:22,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:25,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:25,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-29 04:55:25,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:55:25,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4127 [2020-10-29 04:55:25,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:25,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:25,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 04:55:25,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:55:25,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-29 04:55:25,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 04:55:25,990 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:55:25,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:55:26,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:26,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:26,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:26,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:55:26,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:26,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-29 04:55:26,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:26,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:26,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:55:26,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:26,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:55:26,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:55:26,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:55:26,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [685411447] [2020-10-29 04:55:26,182 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 04:55:26,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 04:55:26,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780357511] [2020-10-29 04:55:26,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 04:55:26,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:55:26,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 04:55:26,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 04:55:26,211 INFO L87 Difference]: Start difference. First operand 315 states. Second operand 4 states. [2020-10-29 04:55:26,471 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:55:30,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:55:30,267 INFO L93 Difference]: Finished difference Result 863 states and 1524 transitions. [2020-10-29 04:55:30,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:55:30,269 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 163 [2020-10-29 04:55:30,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:55:30,308 INFO L225 Difference]: With dead ends: 863 [2020-10-29 04:55:30,308 INFO L226 Difference]: Without dead ends: 484 [2020-10-29 04:55:30,321 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 [2020-10-29 04:55:30,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2020-10-29 04:55:30,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 466. [2020-10-29 04:55:30,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 466 states. [2020-10-29 04:55:30,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 466 states to 466 states and 744 transitions. [2020-10-29 04:55:30,463 INFO L78 Accepts]: Start accepts. Automaton has 466 states and 744 transitions. Word has length 163 [2020-10-29 04:55:30,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:55:30,467 INFO L481 AbstractCegarLoop]: Abstraction has 466 states and 744 transitions. [2020-10-29 04:55:30,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 04:55:30,467 INFO L276 IsEmpty]: Start isEmpty. Operand 466 states and 744 transitions. [2020-10-29 04:55:30,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-29 04:55:30,474 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:55:30,474 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:55:30,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 04:55:30,475 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:55:30,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:55:30,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1742190307, now seen corresponding path program 1 times [2020-10-29 04:55:30,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:55:30,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1797397612] [2020-10-29 04:55:30,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:55:30,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:30,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:31,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:32,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:33,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:33,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-29 04:55:33,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:55:33,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3115 [2020-10-29 04:55:33,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:33,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:33,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:55:33,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 04:55:33,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-10-29 04:55:33,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:55:34,083 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:55:34,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:55:34,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:34,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:34,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:34,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:55:34,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:34,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 04:55:34,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:34,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:34,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:55:34,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:34,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:55:34,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:55:34,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:55:34,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:34,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:34,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:34,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 04:55:34,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:34,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 04:55:34,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:34,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:34,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:55:34,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:34,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 04:55:34,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:55:34,376 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:55:34,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1797397612] [2020-10-29 04:55:34,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:55:34,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:55:34,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145912148] [2020-10-29 04:55:34,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:55:34,380 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:55:34,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:55:34,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:55:34,381 INFO L87 Difference]: Start difference. First operand 466 states and 744 transitions. Second operand 5 states. [2020-10-29 04:55:34,661 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:55:38,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:55:38,379 INFO L93 Difference]: Finished difference Result 1362 states and 2201 transitions. [2020-10-29 04:55:38,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:55:38,380 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 172 [2020-10-29 04:55:38,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:55:38,394 INFO L225 Difference]: With dead ends: 1362 [2020-10-29 04:55:38,395 INFO L226 Difference]: Without dead ends: 902 [2020-10-29 04:55:38,397 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:55:38,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 902 states. [2020-10-29 04:55:38,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 902 to 897. [2020-10-29 04:55:38,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 897 states. [2020-10-29 04:55:38,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 897 states to 897 states and 1337 transitions. [2020-10-29 04:55:38,457 INFO L78 Accepts]: Start accepts. Automaton has 897 states and 1337 transitions. Word has length 172 [2020-10-29 04:55:38,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:55:38,458 INFO L481 AbstractCegarLoop]: Abstraction has 897 states and 1337 transitions. [2020-10-29 04:55:38,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:55:38,459 INFO L276 IsEmpty]: Start isEmpty. Operand 897 states and 1337 transitions. [2020-10-29 04:55:38,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-29 04:55:38,464 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:55:38,465 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:55:38,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 04:55:38,465 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:55:38,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:55:38,466 INFO L82 PathProgramCache]: Analyzing trace with hash -186142553, now seen corresponding path program 1 times [2020-10-29 04:55:38,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:55:38,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2111292213] [2020-10-29 04:55:38,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:55:38,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:38,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:38,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:40,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:42,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:42,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-29 04:55:42,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:55:42,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4022 [2020-10-29 04:55:42,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:42,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:42,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:55:42,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 04:55:42,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-10-29 04:55:42,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 04:55:43,012 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:55:43,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:55:43,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:43,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:43,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:43,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:55:43,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:43,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 04:55:43,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:43,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:43,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:55:43,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:43,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:55:43,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:43,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:55:43,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:43,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:43,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:43,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 04:55:43,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:43,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 04:55:43,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:43,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:43,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:55:43,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:43,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:55:43,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:43,294 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:55:43,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2111292213] [2020-10-29 04:55:43,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:55:43,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:55:43,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855486305] [2020-10-29 04:55:43,297 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:55:43,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:55:43,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:55:43,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:55:43,303 INFO L87 Difference]: Start difference. First operand 897 states and 1337 transitions. Second operand 5 states. [2020-10-29 04:55:43,653 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:55:46,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:55:46,896 INFO L93 Difference]: Finished difference Result 2628 states and 3981 transitions. [2020-10-29 04:55:46,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:55:46,897 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 174 [2020-10-29 04:55:46,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:55:46,909 INFO L225 Difference]: With dead ends: 2628 [2020-10-29 04:55:46,910 INFO L226 Difference]: Without dead ends: 1737 [2020-10-29 04:55:46,914 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:55:46,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1737 states. [2020-10-29 04:55:46,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1737 to 1733. [2020-10-29 04:55:46,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1733 states. [2020-10-29 04:55:46,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1733 states to 1733 states and 2298 transitions. [2020-10-29 04:55:46,986 INFO L78 Accepts]: Start accepts. Automaton has 1733 states and 2298 transitions. Word has length 174 [2020-10-29 04:55:46,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:55:46,986 INFO L481 AbstractCegarLoop]: Abstraction has 1733 states and 2298 transitions. [2020-10-29 04:55:46,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:55:46,987 INFO L276 IsEmpty]: Start isEmpty. Operand 1733 states and 2298 transitions. [2020-10-29 04:55:46,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-10-29 04:55:46,993 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:55:46,994 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:55:46,994 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 04:55:46,994 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:55:46,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:55:46,995 INFO L82 PathProgramCache]: Analyzing trace with hash 603745846, now seen corresponding path program 1 times [2020-10-29 04:55:46,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:55:46,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1052502297] [2020-10-29 04:55:46,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:55:47,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:47,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:47,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:47,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:47,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:50,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:52,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:52,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-10-29 04:55:52,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 04:55:52,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 04:55:52,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:52,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:52,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 04:55:52,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:55:52,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 04:55:52,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:55:52,351 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:55:52,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:55:52,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:52,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:52,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:52,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:55:52,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:52,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 04:55:52,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:52,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:52,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:55:52,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:52,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:55:52,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:52,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:55:52,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:52,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:52,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:52,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:52,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 04:55:52,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:55:52,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-29 04:55:52,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:52,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:52,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:55:52,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:52,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 04:55:52,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:52,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 04:55:52,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:52,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:52,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:52,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:52,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 04:55:52,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:55:52,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 04:55:52,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:52,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:52,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:55:52,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:55:52,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 04:55:52,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:52,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 04:55:52,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:52,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:52,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:52,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-29 04:55:52,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:52,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-29 04:55:52,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:52,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:52,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:55:52,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:55:52,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 04:55:52,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:52,976 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 50 proven. 7 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-29 04:55:52,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1052502297] [2020-10-29 04:55:52,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:55:52,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 04:55:52,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245131328] [2020-10-29 04:55:52,979 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 04:55:52,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:55:52,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 04:55:52,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-29 04:55:52,982 INFO L87 Difference]: Start difference. First operand 1733 states and 2298 transitions. Second operand 8 states. [2020-10-29 04:55:53,269 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:55:55,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:55:55,450 INFO L93 Difference]: Finished difference Result 3437 states and 4596 transitions. [2020-10-29 04:55:55,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 04:55:55,451 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 211 [2020-10-29 04:55:55,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:55:55,462 INFO L225 Difference]: With dead ends: 3437 [2020-10-29 04:55:55,462 INFO L226 Difference]: Without dead ends: 1710 [2020-10-29 04:55:55,467 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-29 04:55:55,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1710 states. [2020-10-29 04:55:55,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1710 to 1706. [2020-10-29 04:55:55,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1706 states. [2020-10-29 04:55:55,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1706 states to 1706 states and 2188 transitions. [2020-10-29 04:55:55,527 INFO L78 Accepts]: Start accepts. Automaton has 1706 states and 2188 transitions. Word has length 211 [2020-10-29 04:55:55,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:55:55,528 INFO L481 AbstractCegarLoop]: Abstraction has 1706 states and 2188 transitions. [2020-10-29 04:55:55,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 04:55:55,528 INFO L276 IsEmpty]: Start isEmpty. Operand 1706 states and 2188 transitions. [2020-10-29 04:55:55,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-29 04:55:55,535 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:55:55,535 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:55:55,535 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 04:55:55,536 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:55:55,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:55:55,536 INFO L82 PathProgramCache]: Analyzing trace with hash -826924569, now seen corresponding path program 1 times [2020-10-29 04:55:55,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:55:55,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1282686549] [2020-10-29 04:55:55,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:55:55,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:55,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:56,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:57,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:57,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:57,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 228 [2020-10-29 04:55:57,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:55:57,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2305 [2020-10-29 04:55:57,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:57,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:57,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:55:57,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-29 04:55:57,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-10-29 04:55:57,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:58,382 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:55:58,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:55:58,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:58,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:58,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:58,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:55:58,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:58,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 04:55:58,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:58,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:58,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:55:58,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:58,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:55:58,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:58,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:55:58,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:58,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:58,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:58,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 04:55:58,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:58,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 04:55:58,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:58,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:58,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:55:58,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:58,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:55:58,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:58,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 04:55:58,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:55:58,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:55:58,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:55:58,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-29 04:55:58,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:55:58,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-29 04:55:58,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:55:58,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:55:58,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:55:58,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:55:58,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 04:55:58,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:55:58,795 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 46 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-29 04:55:58,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1282686549] [2020-10-29 04:55:58,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:55:58,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 04:55:58,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451615233] [2020-10-29 04:55:58,797 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 04:55:58,797 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:55:58,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 04:55:58,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 04:55:58,798 INFO L87 Difference]: Start difference. First operand 1706 states and 2188 transitions. Second operand 5 states. [2020-10-29 04:55:59,223 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:56:02,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:56:02,209 INFO L93 Difference]: Finished difference Result 5089 states and 6642 transitions. [2020-10-29 04:56:02,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 04:56:02,210 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 214 [2020-10-29 04:56:02,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:56:02,232 INFO L225 Difference]: With dead ends: 5089 [2020-10-29 04:56:02,232 INFO L226 Difference]: Without dead ends: 3389 [2020-10-29 04:56:02,238 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 04:56:02,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3389 states. [2020-10-29 04:56:02,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3389 to 3378. [2020-10-29 04:56:02,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3378 states. [2020-10-29 04:56:02,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3378 states to 3378 states and 4331 transitions. [2020-10-29 04:56:02,371 INFO L78 Accepts]: Start accepts. Automaton has 3378 states and 4331 transitions. Word has length 214 [2020-10-29 04:56:02,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:56:02,372 INFO L481 AbstractCegarLoop]: Abstraction has 3378 states and 4331 transitions. [2020-10-29 04:56:02,372 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 04:56:02,372 INFO L276 IsEmpty]: Start isEmpty. Operand 3378 states and 4331 transitions. [2020-10-29 04:56:02,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-10-29 04:56:02,384 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:56:02,385 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:56:02,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 04:56:02,385 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:56:02,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:56:02,386 INFO L82 PathProgramCache]: Analyzing trace with hash -1957960721, now seen corresponding path program 1 times [2020-10-29 04:56:02,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:56:02,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [127204441] [2020-10-29 04:56:02,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:56:02,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:02,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:03,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:03,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-10-29 04:56:03,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:03,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1163 [2020-10-29 04:56:03,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:03,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:03,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 04:56:03,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:56:03,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 04:56:03,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:03,895 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:56:03,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:56:03,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:03,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:03,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:03,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:56:03,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:03,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 04:56:03,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:03,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:03,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:56:03,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:03,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:56:03,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:04,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:56:04,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:04,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:04,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:04,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-29 04:56:04,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:04,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-29 04:56:04,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:04,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:04,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:56:04,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:56:04,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-29 04:56:04,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:04,463 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 04:56:04,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [127204441] [2020-10-29 04:56:04,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 04:56:04,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 04:56:04,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247341896] [2020-10-29 04:56:04,465 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:56:04,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:56:04,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:56:04,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:56:04,466 INFO L87 Difference]: Start difference. First operand 3378 states and 4331 transitions. Second operand 7 states. [2020-10-29 04:56:04,733 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-29 04:56:08,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:56:08,820 INFO L93 Difference]: Finished difference Result 9373 states and 12524 transitions. [2020-10-29 04:56:08,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 04:56:08,821 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 245 [2020-10-29 04:56:08,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:56:08,868 INFO L225 Difference]: With dead ends: 9373 [2020-10-29 04:56:08,868 INFO L226 Difference]: Without dead ends: 6001 [2020-10-29 04:56:08,880 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-29 04:56:08,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6001 states. [2020-10-29 04:56:09,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6001 to 5939. [2020-10-29 04:56:09,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5939 states. [2020-10-29 04:56:09,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5939 states to 5939 states and 7783 transitions. [2020-10-29 04:56:09,172 INFO L78 Accepts]: Start accepts. Automaton has 5939 states and 7783 transitions. Word has length 245 [2020-10-29 04:56:09,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:56:09,173 INFO L481 AbstractCegarLoop]: Abstraction has 5939 states and 7783 transitions. [2020-10-29 04:56:09,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 04:56:09,173 INFO L276 IsEmpty]: Start isEmpty. Operand 5939 states and 7783 transitions. [2020-10-29 04:56:09,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2020-10-29 04:56:09,200 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:56:09,200 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:56:09,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 04:56:09,201 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:56:09,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:56:09,202 INFO L82 PathProgramCache]: Analyzing trace with hash 1378754852, now seen corresponding path program 1 times [2020-10-29 04:56:09,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:56:09,204 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [707563858] [2020-10-29 04:56:09,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:56:09,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:09,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:09,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:09,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:12,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:13,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:13,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:14,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:14,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 04:56:14,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 04:56:14,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 04:56:14,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:14,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:14,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 04:56:14,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-29 04:56:14,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 229 [2020-10-29 04:56:14,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:14,643 WARN L193 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:56:14,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:56:14,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:14,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:14,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:14,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:56:14,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:14,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 04:56:14,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:14,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:14,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:56:14,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:14,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:56:14,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 04:56:14,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:56:14,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:14,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:14,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:14,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 04:56:14,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:14,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 04:56:14,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:14,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:14,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:56:14,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:14,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:56:14,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:56:14,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 04:56:14,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:14,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:14,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:14,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-29 04:56:14,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:14,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 04:56:14,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:14,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:14,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:56:14,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:14,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 04:56:14,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:56:14,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 04:56:14,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:14,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:15,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:15,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:15,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-29 04:56:15,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:56:15,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-10-29 04:56:15,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:15,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:15,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:56:15,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:56:15,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-29 04:56:15,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:56:15,410 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 48 proven. 63 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-29 04:56:15,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [707563858] [2020-10-29 04:56:15,412 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:56:15,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:56:15,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228167247] [2020-10-29 04:56:15,413 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:56:15,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:56:15,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:56:15,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:56:15,414 INFO L87 Difference]: Start difference. First operand 5939 states and 7783 transitions. Second operand 7 states. [2020-10-29 04:56:15,690 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:56:18,884 WARN L193 SmtUtils]: Spent 295.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:56:19,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:56:19,740 INFO L93 Difference]: Finished difference Result 17351 states and 23869 transitions. [2020-10-29 04:56:19,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 04:56:19,741 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 259 [2020-10-29 04:56:19,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:56:19,815 INFO L225 Difference]: With dead ends: 17351 [2020-10-29 04:56:19,815 INFO L226 Difference]: Without dead ends: 11418 [2020-10-29 04:56:19,839 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 04:56:19,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11418 states. [2020-10-29 04:56:20,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11418 to 11300. [2020-10-29 04:56:20,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11300 states. [2020-10-29 04:56:20,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11300 states to 11300 states and 14659 transitions. [2020-10-29 04:56:20,281 INFO L78 Accepts]: Start accepts. Automaton has 11300 states and 14659 transitions. Word has length 259 [2020-10-29 04:56:20,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:56:20,281 INFO L481 AbstractCegarLoop]: Abstraction has 11300 states and 14659 transitions. [2020-10-29 04:56:20,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 04:56:20,281 INFO L276 IsEmpty]: Start isEmpty. Operand 11300 states and 14659 transitions. [2020-10-29 04:56:20,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-10-29 04:56:20,316 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:56:20,317 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:56:20,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 04:56:20,317 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:56:20,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:56:20,318 INFO L82 PathProgramCache]: Analyzing trace with hash 203565525, now seen corresponding path program 1 times [2020-10-29 04:56:20,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:56:20,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1265185970] [2020-10-29 04:56:20,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:56:20,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:20,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:20,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:20,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:25,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:25,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 279 [2020-10-29 04:56:25,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:56:25,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 04:56:25,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:25,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:25,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:56:25,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-29 04:56:25,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-29 04:56:25,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:25,691 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:56:25,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:56:25,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:25,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:25,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:25,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:56:25,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:25,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 04:56:25,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:25,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:25,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:56:25,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:25,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:56:25,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:25,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:56:25,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:25,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:25,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:25,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 04:56:25,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:25,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 04:56:25,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:25,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:25,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:56:25,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:25,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:56:25,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 04:56:25,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 04:56:25,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:25,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:25,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:25,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-29 04:56:25,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:25,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 04:56:25,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:25,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:25,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:56:25,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:25,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 04:56:25,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 04:56:25,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 04:56:25,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:25,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:26,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:26,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-29 04:56:26,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:26,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-10-29 04:56:26,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:26,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:26,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:56:26,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:56:26,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-29 04:56:26,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:26,373 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 125 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-29 04:56:26,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1265185970] [2020-10-29 04:56:26,373 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:56:26,374 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 04:56:26,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725307585] [2020-10-29 04:56:26,375 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 04:56:26,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:56:26,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 04:56:26,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 04:56:26,376 INFO L87 Difference]: Start difference. First operand 11300 states and 14659 transitions. Second operand 8 states. [2020-10-29 04:56:26,636 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:56:27,073 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:56:28,296 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:56:31,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:56:31,939 INFO L93 Difference]: Finished difference Result 26120 states and 35170 transitions. [2020-10-29 04:56:31,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 04:56:31,939 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 263 [2020-10-29 04:56:31,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:56:32,015 INFO L225 Difference]: With dead ends: 26120 [2020-10-29 04:56:32,015 INFO L226 Difference]: Without dead ends: 14826 [2020-10-29 04:56:32,047 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-29 04:56:32,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14826 states. [2020-10-29 04:56:32,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14826 to 14742. [2020-10-29 04:56:32,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14742 states. [2020-10-29 04:56:32,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14742 states to 14742 states and 18912 transitions. [2020-10-29 04:56:32,531 INFO L78 Accepts]: Start accepts. Automaton has 14742 states and 18912 transitions. Word has length 263 [2020-10-29 04:56:32,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:56:32,532 INFO L481 AbstractCegarLoop]: Abstraction has 14742 states and 18912 transitions. [2020-10-29 04:56:32,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 04:56:32,532 INFO L276 IsEmpty]: Start isEmpty. Operand 14742 states and 18912 transitions. [2020-10-29 04:56:32,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2020-10-29 04:56:32,568 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:56:32,568 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:56:32,569 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 04:56:32,569 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:56:32,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:56:32,570 INFO L82 PathProgramCache]: Analyzing trace with hash -876037386, now seen corresponding path program 1 times [2020-10-29 04:56:32,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:56:32,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1795108394] [2020-10-29 04:56:32,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:56:32,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:32,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:33,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:33,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 280 [2020-10-29 04:56:33,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:33,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 972 [2020-10-29 04:56:33,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:33,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:33,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:56:33,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-29 04:56:33,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-29 04:56:33,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:33,964 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:56:33,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:56:33,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:33,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:33,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:33,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:56:33,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:33,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 04:56:33,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:33,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:33,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:56:33,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:33,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:56:33,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:34,095 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-29 04:56:34,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:56:34,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:34,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:34,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:34,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 04:56:34,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:34,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 04:56:34,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:34,137 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:34,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:56:34,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:34,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 04:56:34,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:34,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 04:56:34,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:34,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:34,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:34,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-29 04:56:34,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:34,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-10-29 04:56:34,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:34,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:34,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:56:34,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:56:34,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-29 04:56:34,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:34,779 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 115 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 04:56:34,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1795108394] [2020-10-29 04:56:34,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:56:34,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:56:34,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650030682] [2020-10-29 04:56:34,780 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:56:34,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:56:34,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:56:34,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:56:34,781 INFO L87 Difference]: Start difference. First operand 14742 states and 18912 transitions. Second operand 7 states. [2020-10-29 04:56:35,226 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:56:36,457 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-29 04:56:39,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:56:39,457 INFO L93 Difference]: Finished difference Result 32078 states and 44520 transitions. [2020-10-29 04:56:39,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 04:56:39,458 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 266 [2020-10-29 04:56:39,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:56:39,571 INFO L225 Difference]: With dead ends: 32078 [2020-10-29 04:56:39,571 INFO L226 Difference]: Without dead ends: 17342 [2020-10-29 04:56:39,622 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 04:56:39,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17342 states. [2020-10-29 04:56:40,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17342 to 16694. [2020-10-29 04:56:40,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16694 states. [2020-10-29 04:56:40,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16694 states to 16694 states and 21526 transitions. [2020-10-29 04:56:40,314 INFO L78 Accepts]: Start accepts. Automaton has 16694 states and 21526 transitions. Word has length 266 [2020-10-29 04:56:40,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:56:40,315 INFO L481 AbstractCegarLoop]: Abstraction has 16694 states and 21526 transitions. [2020-10-29 04:56:40,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 04:56:40,315 INFO L276 IsEmpty]: Start isEmpty. Operand 16694 states and 21526 transitions. [2020-10-29 04:56:40,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-10-29 04:56:40,359 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:56:40,360 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:56:40,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 04:56:40,360 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:56:40,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:56:40,361 INFO L82 PathProgramCache]: Analyzing trace with hash -457031553, now seen corresponding path program 1 times [2020-10-29 04:56:40,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:56:40,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [580478437] [2020-10-29 04:56:40,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:56:40,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:40,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:40,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:42,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:42,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 291 [2020-10-29 04:56:42,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:56:42,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2477 [2020-10-29 04:56:42,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:42,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:42,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 04:56:42,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:56:42,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-29 04:56:42,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:43,168 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:56:43,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:56:43,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:43,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:43,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:43,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:56:43,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:43,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 04:56:43,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:43,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:43,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:56:43,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:43,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:56:43,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:43,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:56:43,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:43,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:43,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:43,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 04:56:43,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:43,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-29 04:56:43,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:43,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:43,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:56:43,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:56:43,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 04:56:43,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:43,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-29 04:56:43,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:43,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:43,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:43,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-29 04:56:43,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:43,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-29 04:56:43,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:43,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:43,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:56:43,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:56:43,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-29 04:56:43,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:44,111 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 109 proven. 27 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 04:56:44,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [580478437] [2020-10-29 04:56:44,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:56:44,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:56:44,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730890342] [2020-10-29 04:56:44,113 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 04:56:44,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:56:44,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 04:56:44,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-29 04:56:44,114 INFO L87 Difference]: Start difference. First operand 16694 states and 21526 transitions. Second operand 8 states. [2020-10-29 04:56:44,398 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:56:48,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:56:48,499 INFO L93 Difference]: Finished difference Result 46147 states and 62333 transitions. [2020-10-29 04:56:48,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 04:56:48,500 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 277 [2020-10-29 04:56:48,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:56:48,640 INFO L225 Difference]: With dead ends: 46147 [2020-10-29 04:56:48,640 INFO L226 Difference]: Without dead ends: 29459 [2020-10-29 04:56:48,687 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 04:56:48,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29459 states. [2020-10-29 04:56:49,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29459 to 28147. [2020-10-29 04:56:49,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28147 states. [2020-10-29 04:56:49,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28147 states to 28147 states and 36656 transitions. [2020-10-29 04:56:49,841 INFO L78 Accepts]: Start accepts. Automaton has 28147 states and 36656 transitions. Word has length 277 [2020-10-29 04:56:49,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:56:49,841 INFO L481 AbstractCegarLoop]: Abstraction has 28147 states and 36656 transitions. [2020-10-29 04:56:49,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 04:56:49,842 INFO L276 IsEmpty]: Start isEmpty. Operand 28147 states and 36656 transitions. [2020-10-29 04:56:49,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2020-10-29 04:56:49,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:56:49,898 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:56:49,899 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 04:56:49,899 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:56:49,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:56:49,900 INFO L82 PathProgramCache]: Analyzing trace with hash 1886475890, now seen corresponding path program 1 times [2020-10-29 04:56:49,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:56:49,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1321710577] [2020-10-29 04:56:49,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:56:50,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:50,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:50,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:50,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 294 [2020-10-29 04:56:50,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:50,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 839 [2020-10-29 04:56:50,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:50,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:50,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:56:50,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-29 04:56:50,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-29 04:56:50,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:51,157 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:56:51,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:56:51,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:51,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:51,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:51,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:56:51,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:51,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:56:51,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:51,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:51,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:56:51,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:51,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:56:51,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:51,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:56:51,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:51,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:51,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:51,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-29 04:56:51,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:51,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 04:56:51,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:51,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:51,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:56:51,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:56:51,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 04:56:51,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:51,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 04:56:51,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:51,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:51,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:56:51,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-29 04:56:51,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:56:51,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-29 04:56:51,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:56:51,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:56:51,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:56:51,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:56:51,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-29 04:56:51,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:56:52,318 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 143 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 04:56:52,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1321710577] [2020-10-29 04:56:52,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:56:52,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:56:52,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521124200] [2020-10-29 04:56:52,320 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:56:52,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:56:52,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:56:52,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:56:52,321 INFO L87 Difference]: Start difference. First operand 28147 states and 36656 transitions. Second operand 7 states. [2020-10-29 04:56:52,841 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 04:56:53,907 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-29 04:56:56,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:56:56,894 INFO L93 Difference]: Finished difference Result 60986 states and 84421 transitions. [2020-10-29 04:56:56,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 04:56:56,895 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 280 [2020-10-29 04:56:56,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:56:57,084 INFO L225 Difference]: With dead ends: 60986 [2020-10-29 04:56:57,085 INFO L226 Difference]: Without dead ends: 32845 [2020-10-29 04:56:57,150 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 04:56:57,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32845 states. [2020-10-29 04:56:58,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32845 to 32158. [2020-10-29 04:56:58,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32158 states. [2020-10-29 04:56:58,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32158 states to 32158 states and 41494 transitions. [2020-10-29 04:56:58,471 INFO L78 Accepts]: Start accepts. Automaton has 32158 states and 41494 transitions. Word has length 280 [2020-10-29 04:56:58,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:56:58,472 INFO L481 AbstractCegarLoop]: Abstraction has 32158 states and 41494 transitions. [2020-10-29 04:56:58,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 04:56:58,472 INFO L276 IsEmpty]: Start isEmpty. Operand 32158 states and 41494 transitions. [2020-10-29 04:56:58,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-10-29 04:56:58,510 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:56:58,510 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:56:58,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 04:56:58,510 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:56:58,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:56:58,511 INFO L82 PathProgramCache]: Analyzing trace with hash -6132949, now seen corresponding path program 1 times [2020-10-29 04:56:58,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:56:58,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [882829274] [2020-10-29 04:56:58,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:56:58,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:56:58,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:56:58,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:01,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:01,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 297 [2020-10-29 04:57:01,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:57:01,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3382 [2020-10-29 04:57:01,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:01,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:01,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:57:01,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-29 04:57:01,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-29 04:57:01,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:02,270 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:57:02,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:57:02,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:02,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:02,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:02,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:57:02,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:02,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:57:02,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:02,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:02,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:57:02,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:57:02,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:57:02,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:02,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:57:02,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:02,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:02,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:02,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 04:57:02,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:02,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 04:57:02,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:02,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:02,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:57:02,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:57:02,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 04:57:02,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:02,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-29 04:57:02,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:02,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:02,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:02,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-29 04:57:02,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:02,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-29 04:57:02,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:02,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:02,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:57:02,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:57:02,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-29 04:57:02,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:02,810 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 149 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 04:57:02,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [882829274] [2020-10-29 04:57:02,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:57:02,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 04:57:02,811 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615821138] [2020-10-29 04:57:02,812 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 04:57:02,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:57:02,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 04:57:02,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 04:57:02,813 INFO L87 Difference]: Start difference. First operand 32158 states and 41494 transitions. Second operand 8 states. [2020-10-29 04:57:03,068 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:57:04,261 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:57:04,540 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:57:08,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:57:08,454 INFO L93 Difference]: Finished difference Result 86097 states and 111051 transitions. [2020-10-29 04:57:08,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 04:57:08,454 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 283 [2020-10-29 04:57:08,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:57:08,673 INFO L225 Difference]: With dead ends: 86097 [2020-10-29 04:57:08,673 INFO L226 Difference]: Without dead ends: 53945 [2020-10-29 04:57:08,740 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-10-29 04:57:08,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53945 states. [2020-10-29 04:57:10,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53945 to 47839. [2020-10-29 04:57:10,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47839 states. [2020-10-29 04:57:10,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47839 states to 47839 states and 60744 transitions. [2020-10-29 04:57:10,199 INFO L78 Accepts]: Start accepts. Automaton has 47839 states and 60744 transitions. Word has length 283 [2020-10-29 04:57:10,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:57:10,199 INFO L481 AbstractCegarLoop]: Abstraction has 47839 states and 60744 transitions. [2020-10-29 04:57:10,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 04:57:10,199 INFO L276 IsEmpty]: Start isEmpty. Operand 47839 states and 60744 transitions. [2020-10-29 04:57:10,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-10-29 04:57:10,256 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:57:10,256 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:57:10,257 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 04:57:10,257 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:57:10,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:57:10,258 INFO L82 PathProgramCache]: Analyzing trace with hash -994890362, now seen corresponding path program 1 times [2020-10-29 04:57:10,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:57:10,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1838204809] [2020-10-29 04:57:10,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:57:10,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:10,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:10,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:12,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:12,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 327 [2020-10-29 04:57:12,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:57:12,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2440 [2020-10-29 04:57:12,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:12,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:12,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 04:57:12,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 04:57:12,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 04:57:12,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:13,059 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:57:13,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:57:13,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:13,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:13,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:13,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:57:13,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:13,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 04:57:13,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:13,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:13,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:57:13,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:57:13,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 04:57:13,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:13,215 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-29 04:57:13,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:57:13,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:13,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:13,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:13,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:13,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 04:57:13,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:57:13,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-29 04:57:13,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:13,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:13,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:57:13,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:57:13,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 04:57:13,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:13,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-29 04:57:13,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:13,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:13,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:13,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 04:57:13,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:13,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-29 04:57:13,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:13,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:13,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:57:13,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:57:13,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 04:57:13,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:13,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-29 04:57:13,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:13,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:13,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:13,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-29 04:57:13,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:13,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-29 04:57:13,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:13,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:13,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:57:13,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-29 04:57:13,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:57:13,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:13,598 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 158 proven. 44 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-29 04:57:13,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1838204809] [2020-10-29 04:57:13,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:57:13,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:57:13,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478529896] [2020-10-29 04:57:13,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:57:13,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:57:13,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:57:13,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:57:13,600 INFO L87 Difference]: Start difference. First operand 47839 states and 60744 transitions. Second operand 7 states. [2020-10-29 04:57:13,879 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:57:15,341 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-29 04:57:17,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:57:17,775 INFO L93 Difference]: Finished difference Result 113392 states and 145896 transitions. [2020-10-29 04:57:17,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 04:57:17,776 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 311 [2020-10-29 04:57:17,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:57:18,322 INFO L225 Difference]: With dead ends: 113392 [2020-10-29 04:57:18,322 INFO L226 Difference]: Without dead ends: 66190 [2020-10-29 04:57:18,395 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 04:57:18,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66190 states. [2020-10-29 04:57:20,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66190 to 65609. [2020-10-29 04:57:20,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65609 states. [2020-10-29 04:57:21,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65609 states to 65609 states and 82314 transitions. [2020-10-29 04:57:21,119 INFO L78 Accepts]: Start accepts. Automaton has 65609 states and 82314 transitions. Word has length 311 [2020-10-29 04:57:21,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:57:21,119 INFO L481 AbstractCegarLoop]: Abstraction has 65609 states and 82314 transitions. [2020-10-29 04:57:21,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 04:57:21,119 INFO L276 IsEmpty]: Start isEmpty. Operand 65609 states and 82314 transitions. [2020-10-29 04:57:21,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2020-10-29 04:57:21,331 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:57:21,331 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:57:21,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 04:57:21,332 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:57:21,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:57:21,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1009985605, now seen corresponding path program 1 times [2020-10-29 04:57:21,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:57:21,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [256155235] [2020-10-29 04:57:21,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:57:21,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:21,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:21,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:23,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:26,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:26,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 331 [2020-10-29 04:57:26,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:57:26,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5085 [2020-10-29 04:57:26,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:26,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:26,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 04:57:26,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-29 04:57:26,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-29 04:57:26,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:26,843 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:57:26,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:57:26,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:26,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:26,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:26,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:57:26,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:26,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:57:26,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:26,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:26,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:57:26,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:57:26,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:57:26,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:26,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:57:26,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:26,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:27,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:27,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 04:57:27,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:27,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 04:57:27,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:27,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:27,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:57:27,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:57:27,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 04:57:27,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:27,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-29 04:57:27,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:27,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:27,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:27,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 04:57:27,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:27,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-29 04:57:27,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:27,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:27,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 04:57:27,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:57:27,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 04:57:27,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:27,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-29 04:57:27,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:27,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:27,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:27,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-29 04:57:27,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:27,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-29 04:57:27,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:27,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:27,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:57:27,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:57:27,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-29 04:57:27,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:27,576 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 232 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 04:57:27,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [256155235] [2020-10-29 04:57:27,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:57:27,577 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 04:57:27,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263831816] [2020-10-29 04:57:27,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 04:57:27,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:57:27,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 04:57:27,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-29 04:57:27,580 INFO L87 Difference]: Start difference. First operand 65609 states and 82314 transitions. Second operand 10 states. [2020-10-29 04:57:27,901 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 04:57:28,733 WARN L193 SmtUtils]: Spent 486.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 160 [2020-10-29 04:57:30,251 WARN L193 SmtUtils]: Spent 465.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 161 [2020-10-29 04:57:32,462 WARN L193 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 165 [2020-10-29 04:57:33,822 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-29 04:57:37,032 WARN L193 SmtUtils]: Spent 477.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 159 [2020-10-29 04:57:39,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:57:39,148 INFO L93 Difference]: Finished difference Result 182591 states and 234641 transitions. [2020-10-29 04:57:39,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-29 04:57:39,149 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 315 [2020-10-29 04:57:39,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:57:39,689 INFO L225 Difference]: With dead ends: 182591 [2020-10-29 04:57:39,689 INFO L226 Difference]: Without dead ends: 117619 [2020-10-29 04:57:39,770 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=209, Invalid=721, Unknown=0, NotChecked=0, Total=930 [2020-10-29 04:57:39,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117619 states. [2020-10-29 04:57:43,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117619 to 116423. [2020-10-29 04:57:43,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116423 states. [2020-10-29 04:57:43,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116423 states to 116423 states and 144893 transitions. [2020-10-29 04:57:43,619 INFO L78 Accepts]: Start accepts. Automaton has 116423 states and 144893 transitions. Word has length 315 [2020-10-29 04:57:43,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:57:43,620 INFO L481 AbstractCegarLoop]: Abstraction has 116423 states and 144893 transitions. [2020-10-29 04:57:43,620 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 04:57:43,620 INFO L276 IsEmpty]: Start isEmpty. Operand 116423 states and 144893 transitions. [2020-10-29 04:57:43,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-10-29 04:57:43,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:57:43,695 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:57:43,695 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 04:57:43,695 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:57:43,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:57:43,696 INFO L82 PathProgramCache]: Analyzing trace with hash -984639073, now seen corresponding path program 1 times [2020-10-29 04:57:43,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:57:43,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [695751403] [2020-10-29 04:57:43,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:57:43,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:43,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:44,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:44,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:48,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:48,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 333 [2020-10-29 04:57:48,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:57:48,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-29 04:57:48,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:48,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:48,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 04:57:48,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-29 04:57:48,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-29 04:57:48,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:49,292 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:57:49,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:57:49,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:49,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:49,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:49,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:57:49,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:49,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 04:57:49,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:49,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:49,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:57:49,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:57:49,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:57:49,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:49,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:57:49,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:49,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:49,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:49,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 04:57:49,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:49,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 04:57:49,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:49,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:49,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:57:49,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:57:49,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 04:57:49,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:49,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-29 04:57:49,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:49,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:49,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:49,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 04:57:49,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:49,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-29 04:57:49,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:49,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:49,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:57:49,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:57:49,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 04:57:49,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:49,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-29 04:57:49,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:49,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:49,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:57:49,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-29 04:57:49,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:57:49,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-29 04:57:49,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:57:49,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:57:49,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:57:49,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:57:49,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-29 04:57:49,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:57:49,971 INFO L134 CoverageAnalysis]: Checked inductivity of 251 backedges. 211 proven. 6 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-10-29 04:57:49,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [695751403] [2020-10-29 04:57:49,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:57:49,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 04:57:49,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132975576] [2020-10-29 04:57:49,972 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 04:57:49,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:57:49,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 04:57:49,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 04:57:49,973 INFO L87 Difference]: Start difference. First operand 116423 states and 144893 transitions. Second operand 7 states. [2020-10-29 04:57:50,264 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-29 04:57:51,587 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 04:57:55,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:57:55,318 INFO L93 Difference]: Finished difference Result 247430 states and 309709 transitions. [2020-10-29 04:57:55,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 04:57:55,319 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 317 [2020-10-29 04:57:55,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:57:56,037 INFO L225 Difference]: With dead ends: 247430 [2020-10-29 04:57:56,037 INFO L226 Difference]: Without dead ends: 131644 [2020-10-29 04:57:56,159 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 04:57:56,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131644 states. [2020-10-29 04:57:58,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131644 to 126461. [2020-10-29 04:57:58,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126461 states. [2020-10-29 04:57:59,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126461 states to 126461 states and 154764 transitions. [2020-10-29 04:57:59,294 INFO L78 Accepts]: Start accepts. Automaton has 126461 states and 154764 transitions. Word has length 317 [2020-10-29 04:57:59,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:57:59,295 INFO L481 AbstractCegarLoop]: Abstraction has 126461 states and 154764 transitions. [2020-10-29 04:57:59,295 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 04:57:59,295 INFO L276 IsEmpty]: Start isEmpty. Operand 126461 states and 154764 transitions. [2020-10-29 04:57:59,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-10-29 04:57:59,420 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:57:59,421 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:57:59,421 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 04:57:59,421 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:57:59,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:57:59,422 INFO L82 PathProgramCache]: Analyzing trace with hash 958439962, now seen corresponding path program 1 times [2020-10-29 04:57:59,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:57:59,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1308903775] [2020-10-29 04:57:59,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:57:59,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:57:59,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:59,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:57:59,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:04,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:04,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 346 [2020-10-29 04:58:04,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 04:58:04,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5061 [2020-10-29 04:58:04,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:04,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:04,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 04:58:04,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-29 04:58:04,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-29 04:58:04,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:04,874 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:58:04,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:58:04,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:04,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:04,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:04,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:58:04,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:04,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 04:58:04,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:04,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:04,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:58:04,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:58:04,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:58:04,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:04,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:58:05,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:05,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:05,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:05,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 04:58:05,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:05,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-29 04:58:05,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:05,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:05,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:58:05,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:58:05,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 04:58:05,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:05,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-29 04:58:05,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:05,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:05,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:05,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 04:58:05,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:05,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 04:58:05,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:05,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:05,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:58:05,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:58:05,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 04:58:05,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:05,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-29 04:58:05,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:05,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:05,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:05,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 04:58:05,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:05,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-29 04:58:05,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:05,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:05,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:58:05,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:58:05,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 04:58:05,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:05,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-29 04:58:05,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:05,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:05,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:05,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-29 04:58:05,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:05,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 259 [2020-10-29 04:58:05,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:05,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:05,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:58:05,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:58:05,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-29 04:58:05,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:05,840 INFO L134 CoverageAnalysis]: Checked inductivity of 292 backedges. 227 proven. 20 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-29 04:58:05,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1308903775] [2020-10-29 04:58:05,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:58:05,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 04:58:05,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206737372] [2020-10-29 04:58:05,842 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 04:58:05,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:58:05,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 04:58:05,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-29 04:58:05,843 INFO L87 Difference]: Start difference. First operand 126461 states and 154764 transitions. Second operand 8 states. [2020-10-29 04:58:06,134 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 04:58:07,813 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-29 04:58:12,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:58:12,004 INFO L93 Difference]: Finished difference Result 280185 states and 348224 transitions. [2020-10-29 04:58:12,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 04:58:12,004 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 328 [2020-10-29 04:58:12,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:58:12,800 INFO L225 Difference]: With dead ends: 280185 [2020-10-29 04:58:12,800 INFO L226 Difference]: Without dead ends: 154361 [2020-10-29 04:58:12,921 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-29 04:58:13,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154361 states. [2020-10-29 04:58:15,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154361 to 149559. [2020-10-29 04:58:15,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149559 states. [2020-10-29 04:58:16,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149559 states to 149559 states and 183477 transitions. [2020-10-29 04:58:16,598 INFO L78 Accepts]: Start accepts. Automaton has 149559 states and 183477 transitions. Word has length 328 [2020-10-29 04:58:16,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:58:16,599 INFO L481 AbstractCegarLoop]: Abstraction has 149559 states and 183477 transitions. [2020-10-29 04:58:16,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 04:58:16,599 INFO L276 IsEmpty]: Start isEmpty. Operand 149559 states and 183477 transitions. [2020-10-29 04:58:16,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-10-29 04:58:16,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:58:16,694 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:58:16,694 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 04:58:16,694 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:58:16,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:58:16,695 INFO L82 PathProgramCache]: Analyzing trace with hash 890335818, now seen corresponding path program 1 times [2020-10-29 04:58:16,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:58:16,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [534015739] [2020-10-29 04:58:16,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:58:16,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:16,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:16,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:21,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:21,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 351 [2020-10-29 04:58:21,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 04:58:21,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5060 [2020-10-29 04:58:21,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:21,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:21,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 04:58:21,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-29 04:58:21,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 04:58:21,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:22,123 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 04:58:22,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 04:58:22,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:22,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:22,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:22,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 04:58:22,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:22,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 04:58:22,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:22,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:22,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:58:22,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:58:22,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:58:22,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:22,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 04:58:22,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:22,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:22,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:22,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 04:58:22,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:22,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 04:58:22,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:22,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:22,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 04:58:22,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 04:58:22,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 04:58:22,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:22,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 04:58:22,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:22,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:22,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:22,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 04:58:22,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:22,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-29 04:58:22,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:22,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:22,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 04:58:22,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:58:22,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 04:58:22,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:22,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-29 04:58:22,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:22,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:22,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:22,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 04:58:22,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:22,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-29 04:58:22,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:22,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:22,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 04:58:22,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 04:58:22,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 04:58:22,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:22,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-29 04:58:22,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:22,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:22,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 04:58:22,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-29 04:58:22,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 04:58:22,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-29 04:58:22,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 04:58:22,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 04:58:22,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 04:58:22,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-29 04:58:22,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 04:58:22,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 04:58:22,906 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 211 proven. 75 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-29 04:58:22,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [534015739] [2020-10-29 04:58:22,906 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 04:58:22,906 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 04:58:22,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571691915] [2020-10-29 04:58:22,907 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 04:58:22,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 04:58:22,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 04:58:22,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-29 04:58:22,908 INFO L87 Difference]: Start difference. First operand 149559 states and 183477 transitions. Second operand 10 states. [2020-10-29 04:58:23,465 WARN L193 SmtUtils]: Spent 509.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 161 [2020-10-29 04:58:23,835 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-29 04:58:26,081 WARN L193 SmtUtils]: Spent 259.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-29 04:58:26,853 WARN L193 SmtUtils]: Spent 481.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 165 [2020-10-29 04:58:29,404 WARN L193 SmtUtils]: Spent 503.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 162 [2020-10-29 04:58:30,840 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 16 [2020-10-29 04:58:32,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 04:58:32,508 INFO L93 Difference]: Finished difference Result 287125 states and 354407 transitions. [2020-10-29 04:58:32,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 04:58:32,509 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 333 [2020-10-29 04:58:32,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 04:58:32,962 INFO L225 Difference]: With dead ends: 287125 [2020-10-29 04:58:32,963 INFO L226 Difference]: Without dead ends: 138203 [2020-10-29 04:58:33,481 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=148, Invalid=404, Unknown=0, NotChecked=0, Total=552 [2020-10-29 04:58:33,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138203 states. [2020-10-29 04:58:36,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138203 to 125626. [2020-10-29 04:58:36,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125626 states. [2020-10-29 04:58:36,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125626 states to 125626 states and 148718 transitions. [2020-10-29 04:58:36,667 INFO L78 Accepts]: Start accepts. Automaton has 125626 states and 148718 transitions. Word has length 333 [2020-10-29 04:58:36,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 04:58:36,667 INFO L481 AbstractCegarLoop]: Abstraction has 125626 states and 148718 transitions. [2020-10-29 04:58:36,667 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 04:58:36,668 INFO L276 IsEmpty]: Start isEmpty. Operand 125626 states and 148718 transitions. [2020-10-29 04:58:36,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-10-29 04:58:36,745 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 04:58:36,745 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 04:58:36,745 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 04:58:36,745 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 04:58:36,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 04:58:36,746 INFO L82 PathProgramCache]: Analyzing trace with hash 322465981, now seen corresponding path program 1 times [2020-10-29 04:58:36,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 04:58:36,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [510396662] [2020-10-29 04:58:36,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 04:58:36,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 04:58:36,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 04:58:37,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking...