/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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 --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 interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/locks/test_locks_6.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 11:23:02,200 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 11:23:02,205 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 11:23:02,248 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 11:23:02,250 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 11:23:02,262 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 11:23:02,265 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 11:23:02,267 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 11:23:02,270 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 11:23:02,274 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 11:23:02,275 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 11:23:02,278 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 11:23:02,278 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 11:23:02,281 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 11:23:02,284 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 11:23:02,286 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 11:23:02,288 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 11:23:02,291 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 11:23:02,293 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 11:23:02,302 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 11:23:02,304 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 11:23:02,306 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 11:23:02,307 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 11:23:02,308 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 11:23:02,311 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 11:23:02,312 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 11:23:02,312 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 11:23:02,315 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 11:23:02,316 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 11:23:02,318 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 11:23:02,319 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 11:23:02,320 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 11:23:02,321 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 11:23:02,321 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 11:23:02,323 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 11:23:02,323 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 11:23:02,324 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 11:23:02,324 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 11:23:02,324 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 11:23:02,326 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 11:23:02,328 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 11:23:02,329 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 [2020-09-21 11:23:02,368 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 11:23:02,369 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 11:23:02,370 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 11:23:02,370 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 11:23:02,371 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 11:23:02,371 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 11:23:02,371 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 11:23:02,371 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 11:23:02,372 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 11:23:02,372 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 11:23:02,372 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 11:23:02,372 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 11:23:02,372 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 11:23:02,373 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 11:23:02,373 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 11:23:02,373 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 11:23:02,373 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 11:23:02,373 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 11:23:02,374 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 11:23:02,374 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 11:23:02,374 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 11:23:02,374 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:23:02,375 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 11:23:02,375 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 11:23:02,375 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 11:23:02,375 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 11:23:02,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 11:23:02,376 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 11:23:02,376 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 11:23:02,376 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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.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;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-21 11:23:02,847 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 11:23:02,874 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 11:23:02,880 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 11:23:02,883 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 11:23:02,883 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 11:23:02,885 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_6.c [2020-09-21 11:23:02,977 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3614400aa/747b7033df7c4b9cba09f3b268ca20dc/FLAG73dbccfcd [2020-09-21 11:23:03,540 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 11:23:03,541 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/locks/test_locks_6.c [2020-09-21 11:23:03,554 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3614400aa/747b7033df7c4b9cba09f3b268ca20dc/FLAG73dbccfcd [2020-09-21 11:23:03,878 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3614400aa/747b7033df7c4b9cba09f3b268ca20dc [2020-09-21 11:23:03,894 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 11:23:03,901 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 11:23:03,905 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 11:23:03,905 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 11:23:03,910 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 11:23:03,911 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:23:03" (1/1) ... [2020-09-21 11:23:03,916 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d084142 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:23:03, skipping insertion in model container [2020-09-21 11:23:03,916 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:23:03" (1/1) ... [2020-09-21 11:23:03,926 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 11:23:03,957 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 11:23:04,211 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:23:04,216 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 11:23:04,238 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:23:04,254 INFO L208 MainTranslator]: Completed translation [2020-09-21 11:23:04,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:23:04 WrapperNode [2020-09-21 11:23:04,255 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 11:23:04,255 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 11:23:04,256 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 11:23:04,256 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 11:23:04,270 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:23:04" (1/1) ... [2020-09-21 11:23:04,270 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:23:04" (1/1) ... [2020-09-21 11:23:04,276 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:23:04" (1/1) ... [2020-09-21 11:23:04,277 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:23:04" (1/1) ... [2020-09-21 11:23:04,281 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:23:04" (1/1) ... [2020-09-21 11:23:04,365 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:23:04" (1/1) ... [2020-09-21 11:23:04,366 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:23:04" (1/1) ... [2020-09-21 11:23:04,373 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 11:23:04,374 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 11:23:04,374 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 11:23:04,374 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 11:23:04,375 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:23:04" (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 [2020-09-21 11:23:04,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 11:23:04,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 11:23:04,453 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 11:23:04,453 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 11:23:04,454 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 11:23:04,454 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 11:23:04,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 11:23:04,454 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 11:23:04,716 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 11:23:04,717 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-21 11:23:04,722 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:23:04 BoogieIcfgContainer [2020-09-21 11:23:04,722 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 11:23:04,723 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 11:23:04,724 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 11:23:04,727 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 11:23:04,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:23:03" (1/3) ... [2020-09-21 11:23:04,728 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d02b9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:23:04, skipping insertion in model container [2020-09-21 11:23:04,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:23:04" (2/3) ... [2020-09-21 11:23:04,729 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d02b9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:23:04, skipping insertion in model container [2020-09-21 11:23:04,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:23:04" (3/3) ... [2020-09-21 11:23:04,732 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_6.c [2020-09-21 11:23:04,747 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 11:23:04,759 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 11:23:04,787 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 11:23:04,834 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 11:23:04,835 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 11:23:04,835 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 11:23:04,835 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 11:23:04,835 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 11:23:04,835 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 11:23:04,835 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 11:23:04,836 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 11:23:04,861 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-09-21 11:23:04,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-21 11:23:04,870 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:04,871 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:23:04,872 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:04,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:04,880 INFO L82 PathProgramCache]: Analyzing trace with hash 429652513, now seen corresponding path program 1 times [2020-09-21 11:23:04,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:04,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [75099008] [2020-09-21 11:23:04,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:05,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:05,041 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:05,041 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:05,041 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:05,041 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:05,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-21 11:23:05,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:05,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-21 11:23:05,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:05,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:05,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-21 11:23:05,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:23:05,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:23:05,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:05,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:05,124 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:05,124 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:05,125 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:05,125 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:05,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:05,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:05,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:23:05,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:05,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:05,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:05,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:05,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:23:05,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:23:05,135 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [75099008] [2020-09-21 11:23:05,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:05,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:05,139 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980399270] [2020-09-21 11:23:05,145 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:05,146 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:05,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:05,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:05,167 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2020-09-21 11:23:05,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:05,226 INFO L93 Difference]: Finished difference Result 63 states and 102 transitions. [2020-09-21 11:23:05,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:05,228 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-09-21 11:23:05,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:05,244 INFO L225 Difference]: With dead ends: 63 [2020-09-21 11:23:05,244 INFO L226 Difference]: Without dead ends: 48 [2020-09-21 11:23:05,249 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:05,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-21 11:23:05,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 34. [2020-09-21 11:23:05,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-21 11:23:05,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 57 transitions. [2020-09-21 11:23:05,304 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 57 transitions. Word has length 16 [2020-09-21 11:23:05,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:05,305 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 57 transitions. [2020-09-21 11:23:05,305 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:05,305 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 57 transitions. [2020-09-21 11:23:05,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-21 11:23:05,307 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:05,307 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:23:05,307 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 11:23:05,308 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:05,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:05,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1109710883, now seen corresponding path program 1 times [2020-09-21 11:23:05,309 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:05,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [984978469] [2020-09-21 11:23:05,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:05,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:05,340 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:05,340 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:05,341 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:05,341 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:05,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-21 11:23:05,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:05,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:23:05,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:05,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:05,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-21 11:23:05,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:23:05,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:23:05,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:05,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:05,383 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:05,383 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:05,383 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:05,384 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:05,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:05,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:05,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:23:05,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:05,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:05,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:05,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:05,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:23:05,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:23:05,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [984978469] [2020-09-21 11:23:05,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:05,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:05,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984751632] [2020-09-21 11:23:05,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:05,395 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:05,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:05,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:05,396 INFO L87 Difference]: Start difference. First operand 34 states and 57 transitions. Second operand 3 states. [2020-09-21 11:23:05,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:05,428 INFO L93 Difference]: Finished difference Result 77 states and 132 transitions. [2020-09-21 11:23:05,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:05,429 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-09-21 11:23:05,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:05,431 INFO L225 Difference]: With dead ends: 77 [2020-09-21 11:23:05,431 INFO L226 Difference]: Without dead ends: 48 [2020-09-21 11:23:05,432 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:05,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-21 11:23:05,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2020-09-21 11:23:05,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-09-21 11:23:05,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 77 transitions. [2020-09-21 11:23:05,443 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 77 transitions. Word has length 16 [2020-09-21 11:23:05,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:05,443 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 77 transitions. [2020-09-21 11:23:05,443 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:05,444 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 77 transitions. [2020-09-21 11:23:05,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-21 11:23:05,445 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:05,445 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:23:05,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 11:23:05,445 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:05,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:05,446 INFO L82 PathProgramCache]: Analyzing trace with hash 434540691, now seen corresponding path program 1 times [2020-09-21 11:23:05,446 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:05,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1572392972] [2020-09-21 11:23:05,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:05,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:05,476 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:05,476 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:05,477 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:05,477 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:05,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-21 11:23:05,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:05,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 11:23:05,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:05,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:05,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-21 11:23:05,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:23:05,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 11:23:05,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:05,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:05,546 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:05,546 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:05,547 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:05,547 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:05,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:05,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:05,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:23:05,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:05,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:05,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:05,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:05,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:23:05,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:23:05,554 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1572392972] [2020-09-21 11:23:05,554 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:05,554 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:05,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516146527] [2020-09-21 11:23:05,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:05,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:05,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:05,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:05,556 INFO L87 Difference]: Start difference. First operand 46 states and 77 transitions. Second operand 3 states. [2020-09-21 11:23:05,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:05,582 INFO L93 Difference]: Finished difference Result 72 states and 117 transitions. [2020-09-21 11:23:05,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:05,583 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-09-21 11:23:05,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:05,584 INFO L225 Difference]: With dead ends: 72 [2020-09-21 11:23:05,584 INFO L226 Difference]: Without dead ends: 51 [2020-09-21 11:23:05,585 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:05,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-09-21 11:23:05,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2020-09-21 11:23:05,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-09-21 11:23:05,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 79 transitions. [2020-09-21 11:23:05,599 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 79 transitions. Word has length 17 [2020-09-21 11:23:05,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:05,600 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 79 transitions. [2020-09-21 11:23:05,600 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:05,600 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 79 transitions. [2020-09-21 11:23:05,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-21 11:23:05,603 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:05,603 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:23:05,604 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 11:23:05,604 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:05,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:05,604 INFO L82 PathProgramCache]: Analyzing trace with hash 41513681, now seen corresponding path program 1 times [2020-09-21 11:23:05,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:05,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [211396365] [2020-09-21 11:23:05,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:05,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:05,626 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:05,627 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:05,627 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:05,627 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:05,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-21 11:23:05,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:05,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:23:05,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:05,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:05,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-21 11:23:05,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:23:05,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:05,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:05,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:05,657 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:05,658 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:05,658 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:05,658 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:05,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:05,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:05,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:05,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:05,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:05,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:05,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:05,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:05,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:23:05,664 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [211396365] [2020-09-21 11:23:05,664 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:05,664 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:05,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859303750] [2020-09-21 11:23:05,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:05,665 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:05,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:05,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:05,666 INFO L87 Difference]: Start difference. First operand 49 states and 79 transitions. Second operand 3 states. [2020-09-21 11:23:05,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:05,692 INFO L93 Difference]: Finished difference Result 88 states and 144 transitions. [2020-09-21 11:23:05,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:05,692 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-09-21 11:23:05,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:05,694 INFO L225 Difference]: With dead ends: 88 [2020-09-21 11:23:05,694 INFO L226 Difference]: Without dead ends: 86 [2020-09-21 11:23:05,695 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:05,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-09-21 11:23:05,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 64. [2020-09-21 11:23:05,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-09-21 11:23:05,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 104 transitions. [2020-09-21 11:23:05,706 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 104 transitions. Word has length 17 [2020-09-21 11:23:05,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:05,706 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 104 transitions. [2020-09-21 11:23:05,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:05,707 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 104 transitions. [2020-09-21 11:23:05,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-21 11:23:05,708 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:05,708 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:23:05,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 11:23:05,709 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:05,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:05,709 INFO L82 PathProgramCache]: Analyzing trace with hash 721572051, now seen corresponding path program 1 times [2020-09-21 11:23:05,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:05,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [957014875] [2020-09-21 11:23:05,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:05,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:05,727 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:05,728 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:05,728 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:05,728 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:05,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-21 11:23:05,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:05,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:23:05,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:05,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:05,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-21 11:23:05,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:23:05,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:05,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:05,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:05,752 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:05,752 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:05,753 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:05,753 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:05,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:05,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:05,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:05,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:05,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:05,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:05,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:05,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:23:05,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:23:05,758 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [957014875] [2020-09-21 11:23:05,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:05,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:05,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309808281] [2020-09-21 11:23:05,759 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:05,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:05,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:05,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:05,761 INFO L87 Difference]: Start difference. First operand 64 states and 104 transitions. Second operand 3 states. [2020-09-21 11:23:05,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:05,785 INFO L93 Difference]: Finished difference Result 144 states and 238 transitions. [2020-09-21 11:23:05,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:05,786 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-09-21 11:23:05,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:05,788 INFO L225 Difference]: With dead ends: 144 [2020-09-21 11:23:05,788 INFO L226 Difference]: Without dead ends: 88 [2020-09-21 11:23:05,789 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:05,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-09-21 11:23:05,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2020-09-21 11:23:05,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-09-21 11:23:05,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 138 transitions. [2020-09-21 11:23:05,808 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 138 transitions. Word has length 17 [2020-09-21 11:23:05,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:05,809 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 138 transitions. [2020-09-21 11:23:05,809 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:05,809 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 138 transitions. [2020-09-21 11:23:05,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-21 11:23:05,810 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:05,813 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:23:05,813 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 11:23:05,813 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:05,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:05,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1287139128, now seen corresponding path program 1 times [2020-09-21 11:23:05,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:05,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1793073761] [2020-09-21 11:23:05,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:05,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:05,846 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:05,847 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:05,847 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:05,850 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:05,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-21 11:23:05,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:05,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 11:23:05,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:05,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:05,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-21 11:23:05,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:23:05,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:05,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:05,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:05,904 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:05,905 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:05,905 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:05,905 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:05,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:05,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:05,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:05,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:05,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:05,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:05,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:05,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:05,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:23:05,909 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1793073761] [2020-09-21 11:23:05,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:05,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:05,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761869795] [2020-09-21 11:23:05,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:05,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:05,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:05,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:05,912 INFO L87 Difference]: Start difference. First operand 86 states and 138 transitions. Second operand 3 states. [2020-09-21 11:23:05,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:05,931 INFO L93 Difference]: Finished difference Result 129 states and 205 transitions. [2020-09-21 11:23:05,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:05,932 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-09-21 11:23:05,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:05,934 INFO L225 Difference]: With dead ends: 129 [2020-09-21 11:23:05,934 INFO L226 Difference]: Without dead ends: 90 [2020-09-21 11:23:05,935 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:05,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-09-21 11:23:05,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 88. [2020-09-21 11:23:05,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-09-21 11:23:05,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 138 transitions. [2020-09-21 11:23:05,946 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 138 transitions. Word has length 18 [2020-09-21 11:23:05,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:05,946 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 138 transitions. [2020-09-21 11:23:05,946 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:05,947 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 138 transitions. [2020-09-21 11:23:05,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-21 11:23:05,947 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:05,948 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:23:05,948 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 11:23:05,948 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:05,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:05,949 INFO L82 PathProgramCache]: Analyzing trace with hash 894112118, now seen corresponding path program 1 times [2020-09-21 11:23:05,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:05,949 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [318019585] [2020-09-21 11:23:05,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:05,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:05,964 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:05,964 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:05,964 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:05,965 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:05,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-21 11:23:05,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:05,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:23:05,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:05,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:05,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-21 11:23:05,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:23:05,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:05,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:05,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:05,986 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:05,986 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:05,986 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:05,986 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:05,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:05,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:05,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:05,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:05,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:05,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:05,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:05,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:05,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:23:05,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [318019585] [2020-09-21 11:23:05,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:05,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:05,992 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956390821] [2020-09-21 11:23:05,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:05,992 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:05,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:05,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:05,993 INFO L87 Difference]: Start difference. First operand 88 states and 138 transitions. Second operand 3 states. [2020-09-21 11:23:06,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:06,016 INFO L93 Difference]: Finished difference Result 156 states and 248 transitions. [2020-09-21 11:23:06,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:06,017 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-09-21 11:23:06,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:06,019 INFO L225 Difference]: With dead ends: 156 [2020-09-21 11:23:06,019 INFO L226 Difference]: Without dead ends: 154 [2020-09-21 11:23:06,019 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:06,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-09-21 11:23:06,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 120. [2020-09-21 11:23:06,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-09-21 11:23:06,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 186 transitions. [2020-09-21 11:23:06,035 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 186 transitions. Word has length 18 [2020-09-21 11:23:06,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:06,035 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 186 transitions. [2020-09-21 11:23:06,035 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:06,036 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 186 transitions. [2020-09-21 11:23:06,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-21 11:23:06,037 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:06,037 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:23:06,037 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 11:23:06,037 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:06,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:06,038 INFO L82 PathProgramCache]: Analyzing trace with hash 1574170488, now seen corresponding path program 1 times [2020-09-21 11:23:06,038 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:06,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [502406872] [2020-09-21 11:23:06,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:06,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:06,053 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:06,054 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:06,054 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:06,054 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:06,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-21 11:23:06,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:06,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:23:06,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:06,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:06,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-21 11:23:06,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:23:06,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:06,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:06,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:06,073 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:06,073 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:06,073 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:06,074 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:06,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:06,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:06,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:06,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:06,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:06,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:06,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:06,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:06,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:23:06,078 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [502406872] [2020-09-21 11:23:06,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:06,078 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:06,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962892133] [2020-09-21 11:23:06,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:06,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:06,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:06,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:06,080 INFO L87 Difference]: Start difference. First operand 120 states and 186 transitions. Second operand 3 states. [2020-09-21 11:23:06,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:06,101 INFO L93 Difference]: Finished difference Result 272 states and 424 transitions. [2020-09-21 11:23:06,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:06,102 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-09-21 11:23:06,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:06,104 INFO L225 Difference]: With dead ends: 272 [2020-09-21 11:23:06,104 INFO L226 Difference]: Without dead ends: 162 [2020-09-21 11:23:06,105 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:06,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-09-21 11:23:06,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 160. [2020-09-21 11:23:06,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-09-21 11:23:06,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 242 transitions. [2020-09-21 11:23:06,122 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 242 transitions. Word has length 18 [2020-09-21 11:23:06,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:06,123 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 242 transitions. [2020-09-21 11:23:06,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:06,123 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 242 transitions. [2020-09-21 11:23:06,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-21 11:23:06,124 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:06,125 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:23:06,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 11:23:06,125 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:06,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:06,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1947887240, now seen corresponding path program 1 times [2020-09-21 11:23:06,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:06,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1846300541] [2020-09-21 11:23:06,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:06,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:06,145 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:06,146 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:06,146 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:06,146 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:06,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-21 11:23:06,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:06,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:23:06,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:06,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:06,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-21 11:23:06,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:23:06,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:06,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:06,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:06,189 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:06,189 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:06,190 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:06,190 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:06,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:06,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:06,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:06,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:06,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:06,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:06,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:06,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:06,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:23:06,194 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1846300541] [2020-09-21 11:23:06,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:06,195 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:06,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498132006] [2020-09-21 11:23:06,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:06,200 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:06,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:06,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:06,201 INFO L87 Difference]: Start difference. First operand 160 states and 242 transitions. Second operand 3 states. [2020-09-21 11:23:06,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:06,239 INFO L93 Difference]: Finished difference Result 240 states and 360 transitions. [2020-09-21 11:23:06,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:06,240 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-09-21 11:23:06,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:06,242 INFO L225 Difference]: With dead ends: 240 [2020-09-21 11:23:06,242 INFO L226 Difference]: Without dead ends: 166 [2020-09-21 11:23:06,243 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:06,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-09-21 11:23:06,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 164. [2020-09-21 11:23:06,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-09-21 11:23:06,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 242 transitions. [2020-09-21 11:23:06,257 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 242 transitions. Word has length 19 [2020-09-21 11:23:06,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:06,258 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 242 transitions. [2020-09-21 11:23:06,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:06,258 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 242 transitions. [2020-09-21 11:23:06,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-21 11:23:06,259 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:06,260 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:23:06,260 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 11:23:06,260 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:06,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:06,260 INFO L82 PathProgramCache]: Analyzing trace with hash 1554860230, now seen corresponding path program 1 times [2020-09-21 11:23:06,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:06,261 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1565137556] [2020-09-21 11:23:06,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:06,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:06,273 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:06,273 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:06,273 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:06,273 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:06,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-21 11:23:06,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:06,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:23:06,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:06,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:06,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-21 11:23:06,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:23:06,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:06,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:06,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:06,295 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:06,295 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:06,296 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:06,296 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:06,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:06,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:06,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:06,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:06,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:06,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:06,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:06,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:06,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:23:06,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1565137556] [2020-09-21 11:23:06,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:06,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:06,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752744684] [2020-09-21 11:23:06,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:06,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:06,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:06,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:06,302 INFO L87 Difference]: Start difference. First operand 164 states and 242 transitions. Second operand 3 states. [2020-09-21 11:23:06,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:06,322 INFO L93 Difference]: Finished difference Result 284 states and 424 transitions. [2020-09-21 11:23:06,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:06,323 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-09-21 11:23:06,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:06,325 INFO L225 Difference]: With dead ends: 284 [2020-09-21 11:23:06,325 INFO L226 Difference]: Without dead ends: 282 [2020-09-21 11:23:06,326 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:06,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-09-21 11:23:06,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 232. [2020-09-21 11:23:06,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-09-21 11:23:06,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 334 transitions. [2020-09-21 11:23:06,349 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 334 transitions. Word has length 19 [2020-09-21 11:23:06,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:06,349 INFO L479 AbstractCegarLoop]: Abstraction has 232 states and 334 transitions. [2020-09-21 11:23:06,349 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:06,349 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 334 transitions. [2020-09-21 11:23:06,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-21 11:23:06,351 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:06,352 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:23:06,352 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-21 11:23:06,352 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:06,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:06,352 INFO L82 PathProgramCache]: Analyzing trace with hash -2060048696, now seen corresponding path program 1 times [2020-09-21 11:23:06,353 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:06,353 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [221132193] [2020-09-21 11:23:06,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:06,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:06,381 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:06,381 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:06,381 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:06,381 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:06,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-21 11:23:06,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:06,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 11:23:06,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:06,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:06,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-21 11:23:06,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:23:06,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:06,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:06,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:06,407 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:06,407 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:06,408 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:06,408 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:06,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:06,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:06,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:23:06,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:06,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:06,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:06,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:06,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:06,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:23:06,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [221132193] [2020-09-21 11:23:06,413 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:06,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:06,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315417368] [2020-09-21 11:23:06,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:06,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:06,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:06,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:06,416 INFO L87 Difference]: Start difference. First operand 232 states and 334 transitions. Second operand 3 states. [2020-09-21 11:23:06,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:06,455 INFO L93 Difference]: Finished difference Result 524 states and 752 transitions. [2020-09-21 11:23:06,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:06,457 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-09-21 11:23:06,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:06,461 INFO L225 Difference]: With dead ends: 524 [2020-09-21 11:23:06,461 INFO L226 Difference]: Without dead ends: 306 [2020-09-21 11:23:06,463 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:06,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-09-21 11:23:06,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 304. [2020-09-21 11:23:06,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2020-09-21 11:23:06,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 422 transitions. [2020-09-21 11:23:06,488 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 422 transitions. Word has length 19 [2020-09-21 11:23:06,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:06,488 INFO L479 AbstractCegarLoop]: Abstraction has 304 states and 422 transitions. [2020-09-21 11:23:06,489 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:06,490 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 422 transitions. [2020-09-21 11:23:06,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-21 11:23:06,493 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:06,493 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] [2020-09-21 11:23:06,493 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-21 11:23:06,493 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:06,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:06,496 INFO L82 PathProgramCache]: Analyzing trace with hash 956242573, now seen corresponding path program 1 times [2020-09-21 11:23:06,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:06,496 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1043165285] [2020-09-21 11:23:06,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:06,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:06,516 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:06,516 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:06,516 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:06,516 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:06,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-21 11:23:06,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:06,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 11:23:06,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:06,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:06,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-21 11:23:06,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:23:06,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-21 11:23:06,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:06,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:06,540 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:06,540 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:06,540 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:06,541 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:06,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:06,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:06,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:23:06,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:06,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:06,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:06,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:06,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:06,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:23:06,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1043165285] [2020-09-21 11:23:06,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:06,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:06,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029133914] [2020-09-21 11:23:06,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:06,544 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:06,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:06,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:06,545 INFO L87 Difference]: Start difference. First operand 304 states and 422 transitions. Second operand 3 states. [2020-09-21 11:23:06,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:06,570 INFO L93 Difference]: Finished difference Result 456 states and 628 transitions. [2020-09-21 11:23:06,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:06,571 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-09-21 11:23:06,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:06,573 INFO L225 Difference]: With dead ends: 456 [2020-09-21 11:23:06,573 INFO L226 Difference]: Without dead ends: 314 [2020-09-21 11:23:06,574 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:06,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2020-09-21 11:23:06,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 312. [2020-09-21 11:23:06,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2020-09-21 11:23:06,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 422 transitions. [2020-09-21 11:23:06,586 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 422 transitions. Word has length 20 [2020-09-21 11:23:06,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:06,586 INFO L479 AbstractCegarLoop]: Abstraction has 312 states and 422 transitions. [2020-09-21 11:23:06,586 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:06,587 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 422 transitions. [2020-09-21 11:23:06,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-21 11:23:06,587 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:06,588 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] [2020-09-21 11:23:06,588 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-21 11:23:06,588 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:06,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:06,588 INFO L82 PathProgramCache]: Analyzing trace with hash 563215563, now seen corresponding path program 1 times [2020-09-21 11:23:06,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:06,589 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [813151224] [2020-09-21 11:23:06,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:06,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:06,600 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:06,600 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:06,600 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:06,601 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:06,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-21 11:23:06,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:06,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:23:06,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:06,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:06,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-21 11:23:06,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:23:06,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:06,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:06,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:06,622 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:06,622 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:06,622 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:06,622 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:06,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:06,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:06,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:06,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:06,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:06,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:06,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:06,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:06,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:23:06,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [813151224] [2020-09-21 11:23:06,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:06,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:06,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426134851] [2020-09-21 11:23:06,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:06,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:06,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:06,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:06,629 INFO L87 Difference]: Start difference. First operand 312 states and 422 transitions. Second operand 3 states. [2020-09-21 11:23:06,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:06,655 INFO L93 Difference]: Finished difference Result 524 states and 712 transitions. [2020-09-21 11:23:06,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:06,656 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-09-21 11:23:06,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:06,659 INFO L225 Difference]: With dead ends: 524 [2020-09-21 11:23:06,659 INFO L226 Difference]: Without dead ends: 522 [2020-09-21 11:23:06,660 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:06,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2020-09-21 11:23:06,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 456. [2020-09-21 11:23:06,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 456 states. [2020-09-21 11:23:06,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 598 transitions. [2020-09-21 11:23:06,679 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 598 transitions. Word has length 20 [2020-09-21 11:23:06,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:06,680 INFO L479 AbstractCegarLoop]: Abstraction has 456 states and 598 transitions. [2020-09-21 11:23:06,680 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:06,680 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 598 transitions. [2020-09-21 11:23:06,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-21 11:23:06,684 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:06,684 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] [2020-09-21 11:23:06,685 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-21 11:23:06,685 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:06,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:06,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1243273933, now seen corresponding path program 1 times [2020-09-21 11:23:06,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:06,691 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [289544138] [2020-09-21 11:23:06,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:06,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:06,704 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:06,705 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:06,705 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:06,705 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:06,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-21 11:23:06,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:06,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:23:06,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:06,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:06,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-21 11:23:06,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:23:06,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:06,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:06,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:06,730 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:06,731 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:06,731 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:06,731 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:06,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:06,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:06,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:06,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:06,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:06,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:06,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:06,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:06,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:23:06,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [289544138] [2020-09-21 11:23:06,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:06,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:06,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029085852] [2020-09-21 11:23:06,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:06,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:06,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:06,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:06,737 INFO L87 Difference]: Start difference. First operand 456 states and 598 transitions. Second operand 3 states. [2020-09-21 11:23:06,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:06,773 INFO L93 Difference]: Finished difference Result 1020 states and 1320 transitions. [2020-09-21 11:23:06,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:06,773 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-09-21 11:23:06,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:06,776 INFO L225 Difference]: With dead ends: 1020 [2020-09-21 11:23:06,777 INFO L226 Difference]: Without dead ends: 586 [2020-09-21 11:23:06,778 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:06,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2020-09-21 11:23:06,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 584. [2020-09-21 11:23:06,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 584 states. [2020-09-21 11:23:06,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 726 transitions. [2020-09-21 11:23:06,812 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 726 transitions. Word has length 20 [2020-09-21 11:23:06,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:06,812 INFO L479 AbstractCegarLoop]: Abstraction has 584 states and 726 transitions. [2020-09-21 11:23:06,813 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:06,813 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 726 transitions. [2020-09-21 11:23:06,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-21 11:23:06,814 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:06,814 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] [2020-09-21 11:23:06,815 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-21 11:23:06,815 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:06,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:06,815 INFO L82 PathProgramCache]: Analyzing trace with hash 280029309, now seen corresponding path program 1 times [2020-09-21 11:23:06,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:06,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [417148760] [2020-09-21 11:23:06,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:06,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:06,826 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:06,826 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:06,826 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:06,826 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:06,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 11:23:06,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:06,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:23:06,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:06,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:06,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-21 11:23:06,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:23:06,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:06,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:06,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:06,846 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:06,846 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:06,846 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:06,846 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:06,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:06,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:06,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:06,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:06,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:06,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:06,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:06,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:23:06,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:23:06,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [417148760] [2020-09-21 11:23:06,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:06,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:06,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300876671] [2020-09-21 11:23:06,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:06,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:06,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:06,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:06,853 INFO L87 Difference]: Start difference. First operand 584 states and 726 transitions. Second operand 3 states. [2020-09-21 11:23:06,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:06,876 INFO L93 Difference]: Finished difference Result 876 states and 1080 transitions. [2020-09-21 11:23:06,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:06,876 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-09-21 11:23:06,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:06,880 INFO L225 Difference]: With dead ends: 876 [2020-09-21 11:23:06,880 INFO L226 Difference]: Without dead ends: 602 [2020-09-21 11:23:06,881 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:06,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2020-09-21 11:23:06,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 600. [2020-09-21 11:23:06,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 600 states. [2020-09-21 11:23:06,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 726 transitions. [2020-09-21 11:23:06,901 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 726 transitions. Word has length 21 [2020-09-21 11:23:06,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:06,902 INFO L479 AbstractCegarLoop]: Abstraction has 600 states and 726 transitions. [2020-09-21 11:23:06,902 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:06,902 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 726 transitions. [2020-09-21 11:23:06,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-21 11:23:06,903 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:06,904 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] [2020-09-21 11:23:06,904 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-21 11:23:06,904 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:06,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:06,904 INFO L82 PathProgramCache]: Analyzing trace with hash -112997701, now seen corresponding path program 1 times [2020-09-21 11:23:06,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:06,905 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1361908724] [2020-09-21 11:23:06,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:06,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:06,914 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:06,915 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:06,915 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:06,915 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:06,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 11:23:06,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:06,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:23:06,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:06,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:06,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-21 11:23:06,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:23:06,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:06,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:06,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:06,931 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:06,931 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:06,931 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:06,932 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:06,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:06,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:06,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:06,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:06,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:06,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:06,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:06,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:06,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:23:06,935 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1361908724] [2020-09-21 11:23:06,935 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:06,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:06,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320519399] [2020-09-21 11:23:06,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:06,936 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:06,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:06,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:06,937 INFO L87 Difference]: Start difference. First operand 600 states and 726 transitions. Second operand 3 states. [2020-09-21 11:23:06,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:06,965 INFO L93 Difference]: Finished difference Result 970 states and 1159 transitions. [2020-09-21 11:23:06,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:06,966 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-09-21 11:23:06,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:06,971 INFO L225 Difference]: With dead ends: 970 [2020-09-21 11:23:06,971 INFO L226 Difference]: Without dead ends: 968 [2020-09-21 11:23:06,972 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:06,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2020-09-21 11:23:06,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 904. [2020-09-21 11:23:06,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 904 states. [2020-09-21 11:23:06,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1062 transitions. [2020-09-21 11:23:06,999 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1062 transitions. Word has length 21 [2020-09-21 11:23:06,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:06,999 INFO L479 AbstractCegarLoop]: Abstraction has 904 states and 1062 transitions. [2020-09-21 11:23:06,999 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:06,999 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1062 transitions. [2020-09-21 11:23:07,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-21 11:23:07,001 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:23:07,001 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] [2020-09-21 11:23:07,002 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-21 11:23:07,002 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:23:07,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:23:07,002 INFO L82 PathProgramCache]: Analyzing trace with hash 567060669, now seen corresponding path program 1 times [2020-09-21 11:23:07,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:23:07,003 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1527774841] [2020-09-21 11:23:07,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:23:07,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:07,012 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:07,012 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:07,012 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:07,012 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:07,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 11:23:07,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:07,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:07,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:07,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:23:07,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-21 11:23:07,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:23:07,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:07,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:23:07,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:23:07,028 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:23:07,028 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:23:07,028 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:23:07,028 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:23:07,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:23:07,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:23:07,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:23:07,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:23:07,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:23:07,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:23:07,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:23:07,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:23:07,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:23:07,032 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1527774841] [2020-09-21 11:23:07,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:23:07,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:23:07,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097755381] [2020-09-21 11:23:07,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:23:07,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:23:07,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:23:07,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:07,034 INFO L87 Difference]: Start difference. First operand 904 states and 1062 transitions. Second operand 3 states. [2020-09-21 11:23:07,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:23:07,071 INFO L93 Difference]: Finished difference Result 1992 states and 2278 transitions. [2020-09-21 11:23:07,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:23:07,072 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-09-21 11:23:07,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:23:07,072 INFO L225 Difference]: With dead ends: 1992 [2020-09-21 11:23:07,072 INFO L226 Difference]: Without dead ends: 0 [2020-09-21 11:23:07,076 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:23:07,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-21 11:23:07,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-21 11:23:07,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-21 11:23:07,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-21 11:23:07,077 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-09-21 11:23:07,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:23:07,078 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-21 11:23:07,078 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:23:07,078 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-21 11:23:07,078 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-21 11:23:07,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-21 11:23:07,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-21 11:23:07,108 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-21 11:23:07,109 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-21 11:23:07,109 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-21 11:23:07,109 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-21 11:23:07,109 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-21 11:23:07,109 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-21 11:23:07,109 INFO L268 CegarLoopResult]: For program point L93(line 93) no Hoare annotation was computed. [2020-09-21 11:23:07,110 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 4 107) no Hoare annotation was computed. [2020-09-21 11:23:07,110 INFO L268 CegarLoopResult]: For program point L77-1(lines 27 102) no Hoare annotation was computed. [2020-09-21 11:23:07,110 INFO L268 CegarLoopResult]: For program point L78(line 78) no Hoare annotation was computed. [2020-09-21 11:23:07,110 INFO L271 CegarLoopResult]: At program point L103(lines 5 107) the Hoare annotation is: true [2020-09-21 11:23:07,110 INFO L268 CegarLoopResult]: For program point L29(lines 29 31) no Hoare annotation was computed. [2020-09-21 11:23:07,110 INFO L268 CegarLoopResult]: For program point L62-1(lines 27 102) no Hoare annotation was computed. [2020-09-21 11:23:07,110 INFO L268 CegarLoopResult]: For program point L87-1(lines 27 102) no Hoare annotation was computed. [2020-09-21 11:23:07,111 INFO L268 CegarLoopResult]: For program point L54-1(lines 27 102) no Hoare annotation was computed. [2020-09-21 11:23:07,111 INFO L268 CegarLoopResult]: For program point L46(lines 46 48) no Hoare annotation was computed. [2020-09-21 11:23:07,111 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 4 107) no Hoare annotation was computed. [2020-09-21 11:23:07,111 INFO L268 CegarLoopResult]: For program point L46-2(lines 27 102) no Hoare annotation was computed. [2020-09-21 11:23:07,111 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 105) no Hoare annotation was computed. [2020-09-21 11:23:07,112 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 4 107) the Hoare annotation is: true [2020-09-21 11:23:07,112 INFO L268 CegarLoopResult]: For program point L88(line 88) no Hoare annotation was computed. [2020-09-21 11:23:07,112 INFO L268 CegarLoopResult]: For program point L72-1(lines 27 102) no Hoare annotation was computed. [2020-09-21 11:23:07,112 INFO L271 CegarLoopResult]: At program point L97-1(lines 27 102) the Hoare annotation is: true [2020-09-21 11:23:07,112 INFO L268 CegarLoopResult]: For program point L73(line 73) no Hoare annotation was computed. [2020-09-21 11:23:07,112 INFO L268 CegarLoopResult]: For program point L98(line 98) no Hoare annotation was computed. [2020-09-21 11:23:07,112 INFO L264 CegarLoopResult]: At program point L98-1(lines 5 107) the Hoare annotation is: false [2020-09-21 11:23:07,113 INFO L268 CegarLoopResult]: For program point L82-1(lines 27 102) no Hoare annotation was computed. [2020-09-21 11:23:07,113 INFO L268 CegarLoopResult]: For program point L66-1(lines 27 102) no Hoare annotation was computed. [2020-09-21 11:23:07,113 INFO L268 CegarLoopResult]: For program point L58-1(lines 27 102) no Hoare annotation was computed. [2020-09-21 11:23:07,113 INFO L268 CegarLoopResult]: For program point L83(line 83) no Hoare annotation was computed. [2020-09-21 11:23:07,113 INFO L268 CegarLoopResult]: For program point L50-1(lines 27 102) no Hoare annotation was computed. [2020-09-21 11:23:07,113 INFO L268 CegarLoopResult]: For program point L92-1(lines 27 102) no Hoare annotation was computed. [2020-09-21 11:23:07,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 11:23:07 BoogieIcfgContainer [2020-09-21 11:23:07,128 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 11:23:07,132 INFO L168 Benchmark]: Toolchain (without parser) took 3234.56 ms. Allocated memory was 142.1 MB in the beginning and 242.7 MB in the end (delta: 100.7 MB). Free memory was 104.4 MB in the beginning and 146.6 MB in the end (delta: -42.3 MB). Peak memory consumption was 58.4 MB. Max. memory is 7.1 GB. [2020-09-21 11:23:07,132 INFO L168 Benchmark]: CDTParser took 0.77 ms. Allocated memory is still 142.1 MB. Free memory was 122.4 MB in the beginning and 122.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-21 11:23:07,133 INFO L168 Benchmark]: CACSL2BoogieTranslator took 350.01 ms. Allocated memory is still 142.1 MB. Free memory was 103.7 MB in the beginning and 93.6 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-09-21 11:23:07,134 INFO L168 Benchmark]: Boogie Preprocessor took 117.81 ms. Allocated memory was 142.1 MB in the beginning and 204.5 MB in the end (delta: 62.4 MB). Free memory was 93.6 MB in the beginning and 183.2 MB in the end (delta: -89.6 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. [2020-09-21 11:23:07,134 INFO L168 Benchmark]: RCFGBuilder took 348.60 ms. Allocated memory is still 204.5 MB. Free memory was 183.2 MB in the beginning and 167.4 MB in the end (delta: 15.8 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB. [2020-09-21 11:23:07,135 INFO L168 Benchmark]: TraceAbstraction took 2404.54 ms. Allocated memory was 204.5 MB in the beginning and 242.7 MB in the end (delta: 38.3 MB). Free memory was 167.4 MB in the beginning and 146.6 MB in the end (delta: 20.7 MB). Peak memory consumption was 59.0 MB. Max. memory is 7.1 GB. [2020-09-21 11:23:07,138 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.77 ms. Allocated memory is still 142.1 MB. Free memory was 122.4 MB in the beginning and 122.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 350.01 ms. Allocated memory is still 142.1 MB. Free memory was 103.7 MB in the beginning and 93.6 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 117.81 ms. Allocated memory was 142.1 MB in the beginning and 204.5 MB in the end (delta: 62.4 MB). Free memory was 93.6 MB in the beginning and 183.2 MB in the end (delta: -89.6 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 348.60 ms. Allocated memory is still 204.5 MB. Free memory was 183.2 MB in the beginning and 167.4 MB in the end (delta: 15.8 MB). Peak memory consumption was 15.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2404.54 ms. Allocated memory was 204.5 MB in the beginning and 242.7 MB in the end (delta: 38.3 MB). Free memory was 167.4 MB in the beginning and 146.6 MB in the end (delta: 20.7 MB). Peak memory consumption was 59.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 105]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.2s, OverallIterations: 17, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 923 SDtfs, 417 SDslu, 612 SDs, 0 SdLazy, 91 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 85 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=904occurred in iteration=16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 17 MinimizatonAttempts, 270 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 74 NumberOfFragments, 7 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 317 NumberOfCodeBlocks, 317 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 300 ConstructedInterpolants, 0 QuantifiedInterpolants, 9690 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 17 InterpolantComputations, 17 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...