/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/psyco/psyco_accelerometer_1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 11:28:25,671 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 11:28:25,675 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 11:28:25,701 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 11:28:25,702 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 11:28:25,703 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 11:28:25,704 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 11:28:25,706 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 11:28:25,708 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 11:28:25,709 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 11:28:25,710 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 11:28:25,711 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 11:28:25,711 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 11:28:25,712 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 11:28:25,713 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 11:28:25,715 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 11:28:25,715 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 11:28:25,716 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 11:28:25,718 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 11:28:25,721 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 11:28:25,722 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 11:28:25,724 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 11:28:25,725 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 11:28:25,726 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 11:28:25,729 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 11:28:25,729 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 11:28:25,729 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 11:28:25,730 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 11:28:25,734 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 11:28:25,735 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 11:28:25,735 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 11:28:25,736 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 11:28:25,737 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 11:28:25,742 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 11:28:25,743 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 11:28:25,743 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 11:28:25,744 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 11:28:25,744 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 11:28:25,744 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 11:28:25,746 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 11:28:25,746 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 11:28:25,747 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 11:28:25,773 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 11:28:25,774 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 11:28:25,775 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 11:28:25,775 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 11:28:25,776 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 11:28:25,776 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 11:28:25,776 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 11:28:25,776 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 11:28:25,776 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 11:28:25,777 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 11:28:25,777 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 11:28:25,777 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 11:28:25,777 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 11:28:25,777 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 11:28:25,778 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 11:28:25,778 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 11:28:25,778 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 11:28:25,778 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 11:28:25,778 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 11:28:25,779 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 11:28:25,779 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 11:28:25,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:28:25,779 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 11:28:25,780 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 11:28:25,780 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 11:28:25,780 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 11:28:25,780 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 11:28:25,780 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 11:28:25,780 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 11:28:25,781 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 11:28:26,219 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 11:28:26,236 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 11:28:26,240 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 11:28:26,242 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 11:28:26,242 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 11:28:26,244 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/psyco/psyco_accelerometer_1.c [2020-09-21 11:28:26,322 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/94059731d/536763d5c6b14c21b2266f25a1f00587/FLAG20a512805 [2020-09-21 11:28:27,177 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 11:28:27,178 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/psyco/psyco_accelerometer_1.c [2020-09-21 11:28:27,223 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/94059731d/536763d5c6b14c21b2266f25a1f00587/FLAG20a512805 [2020-09-21 11:28:27,729 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/94059731d/536763d5c6b14c21b2266f25a1f00587 [2020-09-21 11:28:27,742 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 11:28:27,747 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 11:28:27,749 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 11:28:27,749 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 11:28:27,753 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 11:28:27,754 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:28:27" (1/1) ... [2020-09-21 11:28:27,759 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@156a129e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:28:27, skipping insertion in model container [2020-09-21 11:28:27,759 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:28:27" (1/1) ... [2020-09-21 11:28:27,768 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 11:28:27,883 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 11:28:28,750 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:28:28,757 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 11:28:29,059 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:28:29,078 INFO L208 MainTranslator]: Completed translation [2020-09-21 11:28:29,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:28:29 WrapperNode [2020-09-21 11:28:29,079 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 11:28:29,080 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 11:28:29,081 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 11:28:29,081 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 11:28:29,099 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:28:29" (1/1) ... [2020-09-21 11:28:29,101 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:28:29" (1/1) ... [2020-09-21 11:28:29,148 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:28:29" (1/1) ... [2020-09-21 11:28:29,149 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:28:29" (1/1) ... [2020-09-21 11:28:29,227 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:28:29" (1/1) ... [2020-09-21 11:28:29,242 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:28:29" (1/1) ... [2020-09-21 11:28:29,259 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:28:29" (1/1) ... [2020-09-21 11:28:29,278 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 11:28:29,279 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 11:28:29,279 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 11:28:29,280 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 11:28:29,281 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:28:29" (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 11:28:29,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 11:28:29,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 11:28:29,376 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 11:28:29,377 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 11:28:29,377 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 11:28:29,377 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 11:28:29,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 11:28:29,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 11:28:31,040 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 11:28:31,042 INFO L295 CfgBuilder]: Removed 21 assume(true) statements. [2020-09-21 11:28:31,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:28:31 BoogieIcfgContainer [2020-09-21 11:28:31,055 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 11:28:31,060 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 11:28:31,060 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 11:28:31,065 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 11:28:31,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:28:27" (1/3) ... [2020-09-21 11:28:31,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@653f013f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:28:31, skipping insertion in model container [2020-09-21 11:28:31,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:28:29" (2/3) ... [2020-09-21 11:28:31,069 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@653f013f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:28:31, skipping insertion in model container [2020-09-21 11:28:31,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:28:31" (3/3) ... [2020-09-21 11:28:31,078 INFO L109 eAbstractionObserver]: Analyzing ICFG psyco_accelerometer_1.c [2020-09-21 11:28:31,095 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 11:28:31,117 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 11:28:31,144 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 11:28:31,196 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 11:28:31,196 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 11:28:31,196 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 11:28:31,196 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 11:28:31,197 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 11:28:31,197 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 11:28:31,198 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 11:28:31,198 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 11:28:31,237 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states. [2020-09-21 11:28:31,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-21 11:28:31,250 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:28:31,251 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:28:31,252 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:28:31,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:28:31,260 INFO L82 PathProgramCache]: Analyzing trace with hash -358841446, now seen corresponding path program 1 times [2020-09-21 11:28:31,271 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:28:31,272 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [894953352] [2020-09-21 11:28:31,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:28:31,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:31,487 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:31,487 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:31,488 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:31,488 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:31,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-21 11:28:31,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:31,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 11:28:31,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:31,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:28:31,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-21 11:28:31,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:28:31,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:31,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:28:31,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:31,601 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:31,601 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:31,601 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:31,601 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:31,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:28:31,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:31,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:28:31,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:31,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:28:31,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:28:31,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:28:31,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:31,614 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 11:28:31,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [894953352] [2020-09-21 11:28:31,617 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:28:31,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-21 11:28:31,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387947819] [2020-09-21 11:28:31,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-21 11:28:31,625 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:28:31,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-21 11:28:31,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-21 11:28:31,646 INFO L87 Difference]: Start difference. First operand 242 states. Second operand 3 states. [2020-09-21 11:28:31,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:28:31,735 INFO L93 Difference]: Finished difference Result 469 states and 916 transitions. [2020-09-21 11:28:31,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-21 11:28:31,737 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-09-21 11:28:31,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:28:31,755 INFO L225 Difference]: With dead ends: 469 [2020-09-21 11:28:31,755 INFO L226 Difference]: Without dead ends: 228 [2020-09-21 11:28:31,761 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 11:28:31,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-09-21 11:28:31,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 228. [2020-09-21 11:28:31,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2020-09-21 11:28:31,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 397 transitions. [2020-09-21 11:28:31,842 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 397 transitions. Word has length 13 [2020-09-21 11:28:31,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:28:31,843 INFO L479 AbstractCegarLoop]: Abstraction has 228 states and 397 transitions. [2020-09-21 11:28:31,843 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-21 11:28:31,843 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 397 transitions. [2020-09-21 11:28:31,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-21 11:28:31,844 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:28:31,845 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:28:31,845 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 11:28:31,845 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:28:31,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:28:31,848 INFO L82 PathProgramCache]: Analyzing trace with hash -2001683715, now seen corresponding path program 1 times [2020-09-21 11:28:31,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:28:31,848 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1274850093] [2020-09-21 11:28:31,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:28:31,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:31,906 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:31,907 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:31,907 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:31,907 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:31,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-21 11:28:31,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:31,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-21 11:28:31,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:31,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:28:31,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-21 11:28:31,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:28:31,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 11:28:31,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:28:31,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:31,973 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:31,974 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:31,974 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:31,974 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:31,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:28:31,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:31,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:28:31,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:31,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:28:31,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:28:31,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:28:31,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:31,982 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 11:28:31,983 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1274850093] [2020-09-21 11:28:31,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:28:31,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:28:31,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419474509] [2020-09-21 11:28:31,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:28:31,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:28:31,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:28:31,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:28:31,986 INFO L87 Difference]: Start difference. First operand 228 states and 397 transitions. Second operand 4 states. [2020-09-21 11:28:32,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:28:32,949 INFO L93 Difference]: Finished difference Result 453 states and 792 transitions. [2020-09-21 11:28:32,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 11:28:32,950 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-09-21 11:28:32,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:28:32,953 INFO L225 Difference]: With dead ends: 453 [2020-09-21 11:28:32,953 INFO L226 Difference]: Without dead ends: 231 [2020-09-21 11:28:32,955 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:28:32,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-09-21 11:28:32,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2020-09-21 11:28:32,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2020-09-21 11:28:32,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 400 transitions. [2020-09-21 11:28:32,974 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 400 transitions. Word has length 14 [2020-09-21 11:28:32,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:28:32,975 INFO L479 AbstractCegarLoop]: Abstraction has 231 states and 400 transitions. [2020-09-21 11:28:32,975 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:28:32,975 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 400 transitions. [2020-09-21 11:28:32,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-21 11:28:32,976 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:28:32,976 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:28:32,977 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 11:28:32,977 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:28:32,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:28:32,977 INFO L82 PathProgramCache]: Analyzing trace with hash 912246429, now seen corresponding path program 1 times [2020-09-21 11:28:32,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:28:32,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1095506307] [2020-09-21 11:28:32,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:28:33,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:33,008 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:33,008 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:33,009 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:33,009 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:33,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-21 11:28:33,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:33,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 11:28:33,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:33,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:28:33,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-21 11:28:33,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-21 11:28:33,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:33,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:28:33,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:33,090 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:33,090 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:33,090 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:33,091 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:33,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:28:33,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:33,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:28:33,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:33,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:28:33,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:28:33,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:28:33,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:33,105 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:28:33,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1095506307] [2020-09-21 11:28:33,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:28:33,106 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:28:33,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814510289] [2020-09-21 11:28:33,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:28:33,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:28:33,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:28:33,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:28:33,111 INFO L87 Difference]: Start difference. First operand 231 states and 400 transitions. Second operand 4 states. [2020-09-21 11:28:33,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:28:33,312 INFO L93 Difference]: Finished difference Result 440 states and 773 transitions. [2020-09-21 11:28:33,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 11:28:33,313 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-09-21 11:28:33,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:28:33,315 INFO L225 Difference]: With dead ends: 440 [2020-09-21 11:28:33,316 INFO L226 Difference]: Without dead ends: 216 [2020-09-21 11:28:33,318 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:28:33,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-09-21 11:28:33,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 216. [2020-09-21 11:28:33,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-09-21 11:28:33,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 378 transitions. [2020-09-21 11:28:33,349 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 378 transitions. Word has length 19 [2020-09-21 11:28:33,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:28:33,351 INFO L479 AbstractCegarLoop]: Abstraction has 216 states and 378 transitions. [2020-09-21 11:28:33,351 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:28:33,351 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 378 transitions. [2020-09-21 11:28:33,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-09-21 11:28:33,354 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:28:33,354 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:28:33,354 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 11:28:33,355 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:28:33,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:28:33,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1491178682, now seen corresponding path program 1 times [2020-09-21 11:28:33,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:28:33,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1924917037] [2020-09-21 11:28:33,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:28:33,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:33,402 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:33,403 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:33,404 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:33,405 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:33,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-21 11:28:33,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:33,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 11:28:33,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:33,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:28:33,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-21 11:28:33,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-21 11:28:33,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:33,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:28:33,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:33,493 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:33,493 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:33,494 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:33,494 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:33,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:28:33,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:33,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:28:33,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:33,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:28:33,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:28:33,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:28:33,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:33,500 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:28:33,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1924917037] [2020-09-21 11:28:33,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:28:33,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:28:33,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444465323] [2020-09-21 11:28:33,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:28:33,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:28:33,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:28:33,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:28:33,503 INFO L87 Difference]: Start difference. First operand 216 states and 378 transitions. Second operand 4 states. [2020-09-21 11:28:34,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:28:34,652 INFO L93 Difference]: Finished difference Result 618 states and 1102 transitions. [2020-09-21 11:28:34,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 11:28:34,652 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-09-21 11:28:34,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:28:34,655 INFO L225 Difference]: With dead ends: 618 [2020-09-21 11:28:34,655 INFO L226 Difference]: Without dead ends: 410 [2020-09-21 11:28:34,656 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:28:34,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2020-09-21 11:28:34,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 404. [2020-09-21 11:28:34,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 404 states. [2020-09-21 11:28:34,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 722 transitions. [2020-09-21 11:28:34,693 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 722 transitions. Word has length 22 [2020-09-21 11:28:34,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:28:34,694 INFO L479 AbstractCegarLoop]: Abstraction has 404 states and 722 transitions. [2020-09-21 11:28:34,694 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:28:34,694 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 722 transitions. [2020-09-21 11:28:34,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-21 11:28:34,697 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:28:34,698 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:28:34,699 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 11:28:34,699 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:28:34,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:28:34,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1582631867, now seen corresponding path program 1 times [2020-09-21 11:28:34,700 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:28:34,700 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1464514542] [2020-09-21 11:28:34,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:28:34,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:34,744 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:34,745 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:34,745 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:34,745 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:34,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-21 11:28:34,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:34,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:28:34,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:34,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:28:34,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-21 11:28:34,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:28:34,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:34,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:28:34,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:34,808 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:34,809 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:34,809 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:34,809 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:34,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:28:34,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:34,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:28:34,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:34,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:28:34,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:28:34,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:28:34,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:34,818 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:28:34,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1464514542] [2020-09-21 11:28:34,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:28:34,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:28:34,819 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500074958] [2020-09-21 11:28:34,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:28:34,821 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:28:34,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:28:34,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:28:34,822 INFO L87 Difference]: Start difference. First operand 404 states and 722 transitions. Second operand 4 states. [2020-09-21 11:28:35,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:28:35,702 INFO L93 Difference]: Finished difference Result 640 states and 1134 transitions. [2020-09-21 11:28:35,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 11:28:35,703 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-09-21 11:28:35,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:28:35,706 INFO L225 Difference]: With dead ends: 640 [2020-09-21 11:28:35,706 INFO L226 Difference]: Without dead ends: 248 [2020-09-21 11:28:35,707 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:28:35,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2020-09-21 11:28:35,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 246. [2020-09-21 11:28:35,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2020-09-21 11:28:35,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 422 transitions. [2020-09-21 11:28:35,717 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 422 transitions. Word has length 23 [2020-09-21 11:28:35,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:28:35,718 INFO L479 AbstractCegarLoop]: Abstraction has 246 states and 422 transitions. [2020-09-21 11:28:35,718 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:28:35,718 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 422 transitions. [2020-09-21 11:28:35,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-21 11:28:35,719 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:28:35,719 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:28:35,719 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 11:28:35,719 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:28:35,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:28:35,720 INFO L82 PathProgramCache]: Analyzing trace with hash -1006681014, now seen corresponding path program 1 times [2020-09-21 11:28:35,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:28:35,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1513447105] [2020-09-21 11:28:35,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:28:35,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:35,739 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:35,740 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:35,740 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:35,740 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:35,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-21 11:28:35,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:35,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:28:35,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:35,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:28:35,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-21 11:28:35,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-21 11:28:35,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:35,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:28:35,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:35,793 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:35,794 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:35,794 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:35,794 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:35,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:28:35,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:35,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:28:35,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:35,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:28:35,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:28:35,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:28:35,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:28:35,800 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:28:35,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1513447105] [2020-09-21 11:28:35,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:28:35,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:28:35,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628764190] [2020-09-21 11:28:35,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:28:35,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:28:35,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:28:35,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:28:35,802 INFO L87 Difference]: Start difference. First operand 246 states and 422 transitions. Second operand 4 states. [2020-09-21 11:28:36,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:28:36,069 INFO L93 Difference]: Finished difference Result 248 states and 423 transitions. [2020-09-21 11:28:36,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 11:28:36,070 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-09-21 11:28:36,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:28:36,072 INFO L225 Difference]: With dead ends: 248 [2020-09-21 11:28:36,072 INFO L226 Difference]: Without dead ends: 246 [2020-09-21 11:28:36,073 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:28:36,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2020-09-21 11:28:36,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2020-09-21 11:28:36,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 246 states. [2020-09-21 11:28:36,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 414 transitions. [2020-09-21 11:28:36,090 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 414 transitions. Word has length 23 [2020-09-21 11:28:36,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:28:36,091 INFO L479 AbstractCegarLoop]: Abstraction has 246 states and 414 transitions. [2020-09-21 11:28:36,091 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:28:36,091 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 414 transitions. [2020-09-21 11:28:36,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-21 11:28:36,092 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:28:36,092 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:28:36,093 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 11:28:36,093 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:28:36,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:28:36,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1124944987, now seen corresponding path program 1 times [2020-09-21 11:28:36,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:28:36,094 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1647360429] [2020-09-21 11:28:36,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:28:36,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:36,158 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:36,159 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:36,159 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:36,160 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:36,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-21 11:28:36,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:36,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-21 11:28:36,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:36,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:28:36,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-21 11:28:36,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-21 11:28:36,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:36,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:28:36,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:36,238 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:36,239 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:36,239 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:36,239 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:36,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:28:36,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:36,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:28:36,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:36,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:28:36,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:28:36,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:28:36,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:36,247 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:28:36,247 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1647360429] [2020-09-21 11:28:36,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:28:36,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:28:36,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724432899] [2020-09-21 11:28:36,248 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:28:36,248 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:28:36,249 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:28:36,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:28:36,249 INFO L87 Difference]: Start difference. First operand 246 states and 414 transitions. Second operand 4 states. [2020-09-21 11:28:37,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:28:37,297 INFO L93 Difference]: Finished difference Result 653 states and 1108 transitions. [2020-09-21 11:28:37,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 11:28:37,306 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-09-21 11:28:37,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:28:37,311 INFO L225 Difference]: With dead ends: 653 [2020-09-21 11:28:37,311 INFO L226 Difference]: Without dead ends: 415 [2020-09-21 11:28:37,312 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:28:37,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2020-09-21 11:28:37,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 402. [2020-09-21 11:28:37,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 402 states. [2020-09-21 11:28:37,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 614 transitions. [2020-09-21 11:28:37,326 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 614 transitions. Word has length 26 [2020-09-21 11:28:37,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:28:37,328 INFO L479 AbstractCegarLoop]: Abstraction has 402 states and 614 transitions. [2020-09-21 11:28:37,328 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:28:37,328 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 614 transitions. [2020-09-21 11:28:37,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-21 11:28:37,333 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:28:37,333 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:28:37,333 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 11:28:37,334 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:28:37,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:28:37,334 INFO L82 PathProgramCache]: Analyzing trace with hash -1803598039, now seen corresponding path program 1 times [2020-09-21 11:28:37,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:28:37,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1118902292] [2020-09-21 11:28:37,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:28:37,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:37,393 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:37,393 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:37,393 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:37,393 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:37,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-21 11:28:37,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:37,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 11:28:37,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:37,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:28:37,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-21 11:28:37,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 11:28:37,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:37,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:28:37,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:37,447 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:37,447 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:37,447 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:37,447 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:37,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:28:37,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:37,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:28:37,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:37,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:28:37,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:28:37,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:28:37,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:28:37,500 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-21 11:28:37,500 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1118902292] [2020-09-21 11:28:37,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:28:37,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:28:37,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44871447] [2020-09-21 11:28:37,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:28:37,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:28:37,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:28:37,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:28:37,502 INFO L87 Difference]: Start difference. First operand 402 states and 614 transitions. Second operand 4 states. [2020-09-21 11:28:37,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:28:37,657 INFO L93 Difference]: Finished difference Result 733 states and 1129 transitions. [2020-09-21 11:28:37,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 11:28:37,658 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-09-21 11:28:37,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:28:37,660 INFO L225 Difference]: With dead ends: 733 [2020-09-21 11:28:37,660 INFO L226 Difference]: Without dead ends: 343 [2020-09-21 11:28:37,662 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:28:37,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2020-09-21 11:28:37,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2020-09-21 11:28:37,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2020-09-21 11:28:37,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 526 transitions. [2020-09-21 11:28:37,675 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 526 transitions. Word has length 36 [2020-09-21 11:28:37,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:28:37,675 INFO L479 AbstractCegarLoop]: Abstraction has 343 states and 526 transitions. [2020-09-21 11:28:37,675 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:28:37,675 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 526 transitions. [2020-09-21 11:28:37,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-21 11:28:37,679 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:28:37,679 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:28:37,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 11:28:37,680 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:28:37,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:28:37,680 INFO L82 PathProgramCache]: Analyzing trace with hash -1771198676, now seen corresponding path program 1 times [2020-09-21 11:28:37,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:28:37,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [660513796] [2020-09-21 11:28:37,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:28:37,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:37,713 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:37,713 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:37,714 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:37,714 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:37,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-21 11:28:37,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:37,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:28:37,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:37,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:28:37,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-21 11:28:37,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-21 11:28:37,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:37,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:28:37,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:37,775 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:37,775 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:37,775 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:37,775 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:37,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:28:37,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:37,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:28:37,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:37,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:28:37,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:28:37,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:28:37,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:37,783 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-21 11:28:37,783 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [660513796] [2020-09-21 11:28:37,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:28:37,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:28:37,788 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283600556] [2020-09-21 11:28:37,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:28:37,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:28:37,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:28:37,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:28:37,791 INFO L87 Difference]: Start difference. First operand 343 states and 526 transitions. Second operand 4 states. [2020-09-21 11:28:37,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:28:37,953 INFO L93 Difference]: Finished difference Result 668 states and 1033 transitions. [2020-09-21 11:28:37,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 11:28:37,955 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-09-21 11:28:37,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:28:37,958 INFO L225 Difference]: With dead ends: 668 [2020-09-21 11:28:37,958 INFO L226 Difference]: Without dead ends: 337 [2020-09-21 11:28:37,959 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:28:37,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2020-09-21 11:28:37,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 337. [2020-09-21 11:28:37,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-09-21 11:28:37,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 506 transitions. [2020-09-21 11:28:37,972 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 506 transitions. Word has length 37 [2020-09-21 11:28:37,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:28:37,972 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 506 transitions. [2020-09-21 11:28:37,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:28:37,973 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 506 transitions. [2020-09-21 11:28:37,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-21 11:28:37,975 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:28:37,975 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:28:37,975 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 11:28:37,975 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:28:37,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:28:37,976 INFO L82 PathProgramCache]: Analyzing trace with hash -2025838196, now seen corresponding path program 1 times [2020-09-21 11:28:37,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:28:37,977 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1208117733] [2020-09-21 11:28:37,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:28:38,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:38,011 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:38,011 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:38,011 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:38,012 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:38,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-21 11:28:38,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:38,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:28:38,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:38,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:28:38,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-21 11:28:38,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-21 11:28:38,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:38,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:28:38,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:38,065 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:38,066 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:38,066 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:38,066 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:38,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:28:38,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:38,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:28:38,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:38,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:28:38,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:28:38,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:28:38,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:38,073 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-21 11:28:38,073 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1208117733] [2020-09-21 11:28:38,073 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:28:38,073 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:28:38,074 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294707175] [2020-09-21 11:28:38,074 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:28:38,074 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:28:38,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:28:38,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:28:38,075 INFO L87 Difference]: Start difference. First operand 337 states and 506 transitions. Second operand 4 states. [2020-09-21 11:28:38,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:28:38,930 INFO L93 Difference]: Finished difference Result 380 states and 547 transitions. [2020-09-21 11:28:38,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 11:28:38,931 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-09-21 11:28:38,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:28:38,935 INFO L225 Difference]: With dead ends: 380 [2020-09-21 11:28:38,935 INFO L226 Difference]: Without dead ends: 343 [2020-09-21 11:28:38,936 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:28:38,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2020-09-21 11:28:38,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 337. [2020-09-21 11:28:38,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2020-09-21 11:28:38,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 470 transitions. [2020-09-21 11:28:38,946 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 470 transitions. Word has length 41 [2020-09-21 11:28:38,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:28:38,946 INFO L479 AbstractCegarLoop]: Abstraction has 337 states and 470 transitions. [2020-09-21 11:28:38,946 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:28:38,947 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 470 transitions. [2020-09-21 11:28:38,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-21 11:28:38,947 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:28:38,948 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:28:38,948 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-21 11:28:38,948 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:28:38,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:28:38,948 INFO L82 PathProgramCache]: Analyzing trace with hash -197451388, now seen corresponding path program 1 times [2020-09-21 11:28:38,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:28:38,949 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2131194237] [2020-09-21 11:28:38,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:28:38,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:38,981 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:38,981 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:38,981 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:38,981 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:38,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-21 11:28:38,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:38,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:28:38,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:38,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:28:38,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-21 11:28:38,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:28:38,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:39,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:28:39,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:39,037 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:39,037 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:39,037 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:39,038 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:39,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:28:39,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:39,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:28:39,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:39,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:28:39,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:28:39,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:28:39,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:39,044 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-21 11:28:39,045 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2131194237] [2020-09-21 11:28:39,045 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:28:39,045 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:28:39,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959672216] [2020-09-21 11:28:39,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:28:39,046 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:28:39,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:28:39,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:28:39,047 INFO L87 Difference]: Start difference. First operand 337 states and 470 transitions. Second operand 4 states. [2020-09-21 11:28:39,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:28:39,311 INFO L93 Difference]: Finished difference Result 639 states and 892 transitions. [2020-09-21 11:28:39,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 11:28:39,312 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2020-09-21 11:28:39,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:28:39,315 INFO L225 Difference]: With dead ends: 639 [2020-09-21 11:28:39,315 INFO L226 Difference]: Without dead ends: 314 [2020-09-21 11:28:39,317 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:28:39,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2020-09-21 11:28:39,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 314. [2020-09-21 11:28:39,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 314 states. [2020-09-21 11:28:39,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 433 transitions. [2020-09-21 11:28:39,326 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 433 transitions. Word has length 42 [2020-09-21 11:28:39,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:28:39,327 INFO L479 AbstractCegarLoop]: Abstraction has 314 states and 433 transitions. [2020-09-21 11:28:39,327 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:28:39,327 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 433 transitions. [2020-09-21 11:28:39,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-21 11:28:39,328 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:28:39,328 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:28:39,329 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-21 11:28:39,329 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:28:39,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:28:39,329 INFO L82 PathProgramCache]: Analyzing trace with hash 1099613084, now seen corresponding path program 1 times [2020-09-21 11:28:39,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:28:39,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1105379569] [2020-09-21 11:28:39,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:28:39,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:39,353 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:39,353 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:39,354 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:39,355 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:39,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-21 11:28:39,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:39,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:28:39,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:39,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:28:39,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-09-21 11:28:39,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:28:39,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:39,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:28:39,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:28:39,416 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:28:39,416 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:28:39,416 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:28:39,419 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:28:39,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-21 11:28:39,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:28:39,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:28:39,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:28:39,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:28:39,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:28:39,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:28:39,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:28:39,428 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-21 11:28:39,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1105379569] [2020-09-21 11:28:39,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:28:39,429 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-21 11:28:39,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781240428] [2020-09-21 11:28:39,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-21 11:28:39,430 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:28:39,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-21 11:28:39,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-21 11:28:39,431 INFO L87 Difference]: Start difference. First operand 314 states and 433 transitions. Second operand 4 states. [2020-09-21 11:28:39,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:28:39,929 INFO L93 Difference]: Finished difference Result 478 states and 669 transitions. [2020-09-21 11:28:39,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-21 11:28:39,930 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2020-09-21 11:28:39,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:28:39,931 INFO L225 Difference]: With dead ends: 478 [2020-09-21 11:28:39,931 INFO L226 Difference]: Without dead ends: 0 [2020-09-21 11:28:39,933 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:28:39,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-21 11:28:39,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-21 11:28:39,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-21 11:28:39,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-21 11:28:39,934 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 43 [2020-09-21 11:28:39,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:28:39,935 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-21 11:28:39,935 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-21 11:28:39,935 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-21 11:28:39,935 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-21 11:28:39,935 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-21 11:28:39,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-21 11:28:40,277 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 23 [2020-09-21 11:28:40,348 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-21 11:28:40,348 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~m_connect_2~0 |old(~m_connect_2~0)|) (= ~m_getValueX~0 |old(~m_getValueX~0)|) (= ~m_update~0 |old(~m_update~0)|) (= ~m_connect_1~0 |old(~m_connect_1~0)|) (= ~m_dataReceived~0 |old(~m_dataReceived~0)|) (= ~m_getValueY~0 |old(~m_getValueY~0)|) (= ~m_init~0 |old(~m_init~0)|) (= ~m_Accelerometer~0 |old(~m_Accelerometer~0)|) (= ~m_disconnect~0 |old(~m_disconnect~0)|)) [2020-09-21 11:28:40,348 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-21 11:28:40,348 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-21 11:28:40,349 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-21 11:28:40,350 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-21 11:28:40,350 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-21 11:28:40,350 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 16 1255) no Hoare annotation was computed. [2020-09-21 11:28:40,350 INFO L268 CegarLoopResult]: For program point L895(lines 895 897) no Hoare annotation was computed. [2020-09-21 11:28:40,350 INFO L268 CegarLoopResult]: For program point L763(lines 763 774) no Hoare annotation was computed. [2020-09-21 11:28:40,350 INFO L268 CegarLoopResult]: For program point L697(lines 697 712) no Hoare annotation was computed. [2020-09-21 11:28:40,350 INFO L268 CegarLoopResult]: For program point L367(lines 367 369) no Hoare annotation was computed. [2020-09-21 11:28:40,351 INFO L268 CegarLoopResult]: For program point L235(lines 235 237) no Hoare annotation was computed. [2020-09-21 11:28:40,351 INFO L268 CegarLoopResult]: For program point L103(lines 103 105) no Hoare annotation was computed. [2020-09-21 11:28:40,351 INFO L268 CegarLoopResult]: For program point L831(lines 831 833) no Hoare annotation was computed. [2020-09-21 11:28:40,351 INFO L268 CegarLoopResult]: For program point L699(lines 699 710) no Hoare annotation was computed. [2020-09-21 11:28:40,351 INFO L268 CegarLoopResult]: For program point L633(lines 633 648) no Hoare annotation was computed. [2020-09-21 11:28:40,351 INFO L268 CegarLoopResult]: For program point L171(lines 171 173) no Hoare annotation was computed. [2020-09-21 11:28:40,351 INFO L268 CegarLoopResult]: For program point L1229(lines 1229 1244) no Hoare annotation was computed. [2020-09-21 11:28:40,351 INFO L268 CegarLoopResult]: For program point L767(lines 767 769) no Hoare annotation was computed. [2020-09-21 11:28:40,351 INFO L268 CegarLoopResult]: For program point L635(lines 635 646) no Hoare annotation was computed. [2020-09-21 11:28:40,352 INFO L268 CegarLoopResult]: For program point L569(lines 569 584) no Hoare annotation was computed. [2020-09-21 11:28:40,352 INFO L268 CegarLoopResult]: For program point L1231(lines 1231 1242) no Hoare annotation was computed. [2020-09-21 11:28:40,352 INFO L268 CegarLoopResult]: For program point L1165(lines 1165 1180) no Hoare annotation was computed. [2020-09-21 11:28:40,352 INFO L268 CegarLoopResult]: For program point L1033(lines 1033 1048) no Hoare annotation was computed. [2020-09-21 11:28:40,352 INFO L268 CegarLoopResult]: For program point L703(lines 703 705) no Hoare annotation was computed. [2020-09-21 11:28:40,352 INFO L268 CegarLoopResult]: For program point L571(lines 571 582) no Hoare annotation was computed. [2020-09-21 11:28:40,352 INFO L268 CegarLoopResult]: For program point L505(lines 505 520) no Hoare annotation was computed. [2020-09-21 11:28:40,352 INFO L268 CegarLoopResult]: For program point L1167(lines 1167 1178) no Hoare annotation was computed. [2020-09-21 11:28:40,353 INFO L268 CegarLoopResult]: For program point L1101(lines 1101 1116) no Hoare annotation was computed. [2020-09-21 11:28:40,353 INFO L268 CegarLoopResult]: For program point L44(lines 44 63) no Hoare annotation was computed. [2020-09-21 11:28:40,353 INFO L268 CegarLoopResult]: For program point L1035(lines 1035 1046) no Hoare annotation was computed. [2020-09-21 11:28:40,353 INFO L268 CegarLoopResult]: For program point L969(lines 969 984) no Hoare annotation was computed. [2020-09-21 11:28:40,353 INFO L268 CegarLoopResult]: For program point L639(lines 639 641) no Hoare annotation was computed. [2020-09-21 11:28:40,353 INFO L268 CegarLoopResult]: For program point L507(lines 507 518) no Hoare annotation was computed. [2020-09-21 11:28:40,354 INFO L268 CegarLoopResult]: For program point L441(lines 441 456) no Hoare annotation was computed. [2020-09-21 11:28:40,354 INFO L268 CegarLoopResult]: For program point L309(lines 309 324) no Hoare annotation was computed. [2020-09-21 11:28:40,354 INFO L268 CegarLoopResult]: For program point L45(lines 45 60) no Hoare annotation was computed. [2020-09-21 11:28:40,354 INFO L268 CegarLoopResult]: For program point L1235(lines 1235 1237) no Hoare annotation was computed. [2020-09-21 11:28:40,354 INFO L268 CegarLoopResult]: For program point L1103(lines 1103 1114) no Hoare annotation was computed. [2020-09-21 11:28:40,354 INFO L268 CegarLoopResult]: For program point L971(lines 971 982) no Hoare annotation was computed. [2020-09-21 11:28:40,354 INFO L268 CegarLoopResult]: For program point L905(lines 905 920) no Hoare annotation was computed. [2020-09-21 11:28:40,354 INFO L268 CegarLoopResult]: For program point L575(lines 575 577) no Hoare annotation was computed. [2020-09-21 11:28:40,355 INFO L268 CegarLoopResult]: For program point L443(lines 443 454) no Hoare annotation was computed. [2020-09-21 11:28:40,355 INFO L268 CegarLoopResult]: For program point L377(lines 377 392) no Hoare annotation was computed. [2020-09-21 11:28:40,355 INFO L268 CegarLoopResult]: For program point L311(lines 311 322) no Hoare annotation was computed. [2020-09-21 11:28:40,355 INFO L268 CegarLoopResult]: For program point L245(lines 245 260) no Hoare annotation was computed. [2020-09-21 11:28:40,355 INFO L264 CegarLoopResult]: At program point L1236(lines 16 1255) the Hoare annotation is: false [2020-09-21 11:28:40,355 INFO L268 CegarLoopResult]: For program point L113(lines 113 128) no Hoare annotation was computed. [2020-09-21 11:28:40,355 INFO L268 CegarLoopResult]: For program point L47(lines 47 58) no Hoare annotation was computed. [2020-09-21 11:28:40,356 INFO L268 CegarLoopResult]: For program point L1171(lines 1171 1173) no Hoare annotation was computed. [2020-09-21 11:28:40,356 INFO L268 CegarLoopResult]: For program point L1039(lines 1039 1041) no Hoare annotation was computed. [2020-09-21 11:28:40,356 INFO L268 CegarLoopResult]: For program point L907(lines 907 918) no Hoare annotation was computed. [2020-09-21 11:28:40,356 INFO L268 CegarLoopResult]: For program point L841(lines 841 856) no Hoare annotation was computed. [2020-09-21 11:28:40,356 INFO L268 CegarLoopResult]: For program point L511(lines 511 513) no Hoare annotation was computed. [2020-09-21 11:28:40,356 INFO L268 CegarLoopResult]: For program point L379(lines 379 390) no Hoare annotation was computed. [2020-09-21 11:28:40,356 INFO L268 CegarLoopResult]: For program point L247(lines 247 258) no Hoare annotation was computed. [2020-09-21 11:28:40,356 INFO L268 CegarLoopResult]: For program point L181(lines 181 196) no Hoare annotation was computed. [2020-09-21 11:28:40,357 INFO L268 CegarLoopResult]: For program point L115(lines 115 126) no Hoare annotation was computed. [2020-09-21 11:28:40,357 INFO L268 CegarLoopResult]: For program point L1107(lines 1107 1109) no Hoare annotation was computed. [2020-09-21 11:28:40,357 INFO L268 CegarLoopResult]: For program point L975(lines 975 977) no Hoare annotation was computed. [2020-09-21 11:28:40,357 INFO L268 CegarLoopResult]: For program point L843(lines 843 854) no Hoare annotation was computed. [2020-09-21 11:28:40,357 INFO L268 CegarLoopResult]: For program point L777(lines 777 792) no Hoare annotation was computed. [2020-09-21 11:28:40,357 INFO L268 CegarLoopResult]: For program point L447(lines 447 449) no Hoare annotation was computed. [2020-09-21 11:28:40,357 INFO L268 CegarLoopResult]: For program point L315(lines 315 317) no Hoare annotation was computed. [2020-09-21 11:28:40,357 INFO L268 CegarLoopResult]: For program point L183(lines 183 194) no Hoare annotation was computed. [2020-09-21 11:28:40,358 INFO L268 CegarLoopResult]: For program point L51(lines 51 53) no Hoare annotation was computed. [2020-09-21 11:28:40,361 INFO L268 CegarLoopResult]: For program point L911(lines 911 913) no Hoare annotation was computed. [2020-09-21 11:28:40,361 INFO L268 CegarLoopResult]: For program point L779(lines 779 790) no Hoare annotation was computed. [2020-09-21 11:28:40,361 INFO L268 CegarLoopResult]: For program point L713(lines 713 728) no Hoare annotation was computed. [2020-09-21 11:28:40,361 INFO L268 CegarLoopResult]: For program point L383(lines 383 385) no Hoare annotation was computed. [2020-09-21 11:28:40,361 INFO L268 CegarLoopResult]: For program point L251(lines 251 253) no Hoare annotation was computed. [2020-09-21 11:28:40,361 INFO L268 CegarLoopResult]: For program point L119(lines 119 121) no Hoare annotation was computed. [2020-09-21 11:28:40,361 INFO L268 CegarLoopResult]: For program point L847(lines 847 849) no Hoare annotation was computed. [2020-09-21 11:28:40,361 INFO L268 CegarLoopResult]: For program point L715(lines 715 726) no Hoare annotation was computed. [2020-09-21 11:28:40,361 INFO L268 CegarLoopResult]: For program point L649(lines 649 664) no Hoare annotation was computed. [2020-09-21 11:28:40,361 INFO L268 CegarLoopResult]: For program point L187(lines 187 189) no Hoare annotation was computed. [2020-09-21 11:28:40,362 INFO L268 CegarLoopResult]: For program point L783(lines 783 785) no Hoare annotation was computed. [2020-09-21 11:28:40,362 INFO L268 CegarLoopResult]: For program point L651(lines 651 662) no Hoare annotation was computed. [2020-09-21 11:28:40,362 INFO L268 CegarLoopResult]: For program point L585(lines 585 600) no Hoare annotation was computed. [2020-09-21 11:28:40,362 INFO L264 CegarLoopResult]: At program point L1246(lines 32 1250) the Hoare annotation is: (let ((.cse3 (<= 1 main_~this_m_conn~0)) (.cse0 (= main_~this_m_conn~0 0)) (.cse1 (<= 1 main_~this_m_delta~0)) (.cse2 (= main_~this_m_conn_data_listener~0 0))) (or (and (= main_~q~0 0) .cse0 .cse1 .cse2) (and (<= 1 main_~this_m_conn_data_listener~0) .cse1 .cse3 (= main_~q~0 3)) (and (<= 4 main_~q~0) .cse1 .cse3 .cse2) (and .cse0 .cse1 .cse2 (= main_~q~0 2)))) [2020-09-21 11:28:40,362 INFO L268 CegarLoopResult]: For program point L1181(lines 1181 1196) no Hoare annotation was computed. [2020-09-21 11:28:40,362 INFO L268 CegarLoopResult]: For program point L1049(lines 1049 1064) no Hoare annotation was computed. [2020-09-21 11:28:40,362 INFO L268 CegarLoopResult]: For program point L719(lines 719 721) no Hoare annotation was computed. [2020-09-21 11:28:40,362 INFO L268 CegarLoopResult]: For program point L587(lines 587 598) no Hoare annotation was computed. [2020-09-21 11:28:40,363 INFO L268 CegarLoopResult]: For program point L521(lines 521 536) no Hoare annotation was computed. [2020-09-21 11:28:40,363 INFO L268 CegarLoopResult]: For program point L1183(lines 1183 1194) no Hoare annotation was computed. [2020-09-21 11:28:40,363 INFO L268 CegarLoopResult]: For program point L1117(lines 1117 1132) no Hoare annotation was computed. [2020-09-21 11:28:40,363 INFO L268 CegarLoopResult]: For program point L1051(lines 1051 1062) no Hoare annotation was computed. [2020-09-21 11:28:40,363 INFO L268 CegarLoopResult]: For program point L985(lines 985 1000) no Hoare annotation was computed. [2020-09-21 11:28:40,363 INFO L268 CegarLoopResult]: For program point L655(lines 655 657) no Hoare annotation was computed. [2020-09-21 11:28:40,363 INFO L268 CegarLoopResult]: For program point L523(lines 523 534) no Hoare annotation was computed. [2020-09-21 11:28:40,363 INFO L268 CegarLoopResult]: For program point L457(lines 457 472) no Hoare annotation was computed. [2020-09-21 11:28:40,364 INFO L268 CegarLoopResult]: For program point L1119(lines 1119 1130) no Hoare annotation was computed. [2020-09-21 11:28:40,364 INFO L268 CegarLoopResult]: For program point L987(lines 987 998) no Hoare annotation was computed. [2020-09-21 11:28:40,364 INFO L268 CegarLoopResult]: For program point L921(lines 921 936) no Hoare annotation was computed. [2020-09-21 11:28:40,364 INFO L268 CegarLoopResult]: For program point L591(lines 591 593) no Hoare annotation was computed. [2020-09-21 11:28:40,364 INFO L268 CegarLoopResult]: For program point L459(lines 459 470) no Hoare annotation was computed. [2020-09-21 11:28:40,364 INFO L268 CegarLoopResult]: For program point L393(lines 393 408) no Hoare annotation was computed. [2020-09-21 11:28:40,364 INFO L268 CegarLoopResult]: For program point L261(lines 261 276) no Hoare annotation was computed. [2020-09-21 11:28:40,364 INFO L268 CegarLoopResult]: For program point L129(lines 129 144) no Hoare annotation was computed. [2020-09-21 11:28:40,365 INFO L268 CegarLoopResult]: For program point L328(lines 328 1067) no Hoare annotation was computed. [2020-09-21 11:28:40,365 INFO L268 CegarLoopResult]: For program point L1187(lines 1187 1189) no Hoare annotation was computed. [2020-09-21 11:28:40,365 INFO L268 CegarLoopResult]: For program point L64(lines 64 147) no Hoare annotation was computed. [2020-09-21 11:28:40,365 INFO L268 CegarLoopResult]: For program point L1055(lines 1055 1057) no Hoare annotation was computed. [2020-09-21 11:28:40,365 INFO L268 CegarLoopResult]: For program point L923(lines 923 934) no Hoare annotation was computed. [2020-09-21 11:28:40,365 INFO L268 CegarLoopResult]: For program point L857(lines 857 872) no Hoare annotation was computed. [2020-09-21 11:28:40,365 INFO L268 CegarLoopResult]: For program point L527(lines 527 529) no Hoare annotation was computed. [2020-09-21 11:28:40,366 INFO L268 CegarLoopResult]: For program point L395(lines 395 406) no Hoare annotation was computed. [2020-09-21 11:28:40,366 INFO L268 CegarLoopResult]: For program point L329(lines 329 344) no Hoare annotation was computed. [2020-09-21 11:28:40,366 INFO L268 CegarLoopResult]: For program point L263(lines 263 274) no Hoare annotation was computed. [2020-09-21 11:28:40,366 INFO L268 CegarLoopResult]: For program point L197(lines 197 212) no Hoare annotation was computed. [2020-09-21 11:28:40,366 INFO L268 CegarLoopResult]: For program point L131(lines 131 142) no Hoare annotation was computed. [2020-09-21 11:28:40,366 INFO L268 CegarLoopResult]: For program point L65(lines 65 80) no Hoare annotation was computed. [2020-09-21 11:28:40,366 INFO L268 CegarLoopResult]: For program point L1123(lines 1123 1125) no Hoare annotation was computed. [2020-09-21 11:28:40,366 INFO L268 CegarLoopResult]: For program point L991(lines 991 993) no Hoare annotation was computed. [2020-09-21 11:28:40,367 INFO L268 CegarLoopResult]: For program point L859(lines 859 870) no Hoare annotation was computed. [2020-09-21 11:28:40,367 INFO L268 CegarLoopResult]: For program point L793(lines 793 808) no Hoare annotation was computed. [2020-09-21 11:28:40,367 INFO L268 CegarLoopResult]: For program point L463(lines 463 465) no Hoare annotation was computed. [2020-09-21 11:28:40,367 INFO L268 CegarLoopResult]: For program point L331(lines 331 342) no Hoare annotation was computed. [2020-09-21 11:28:40,367 INFO L268 CegarLoopResult]: For program point L199(lines 199 210) no Hoare annotation was computed. [2020-09-21 11:28:40,367 INFO L268 CegarLoopResult]: For program point L67(lines 67 78) no Hoare annotation was computed. [2020-09-21 11:28:40,367 INFO L268 CegarLoopResult]: For program point L927(lines 927 929) no Hoare annotation was computed. [2020-09-21 11:28:40,367 INFO L268 CegarLoopResult]: For program point L795(lines 795 806) no Hoare annotation was computed. [2020-09-21 11:28:40,368 INFO L268 CegarLoopResult]: For program point L729(lines 729 744) no Hoare annotation was computed. [2020-09-21 11:28:40,368 INFO L268 CegarLoopResult]: For program point L399(lines 399 401) no Hoare annotation was computed. [2020-09-21 11:28:40,368 INFO L268 CegarLoopResult]: For program point L267(lines 267 269) no Hoare annotation was computed. [2020-09-21 11:28:40,368 INFO L268 CegarLoopResult]: For program point L135(lines 135 137) no Hoare annotation was computed. [2020-09-21 11:28:40,368 INFO L268 CegarLoopResult]: For program point L863(lines 863 865) no Hoare annotation was computed. [2020-09-21 11:28:40,368 INFO L268 CegarLoopResult]: For program point L731(lines 731 742) no Hoare annotation was computed. [2020-09-21 11:28:40,368 INFO L268 CegarLoopResult]: For program point L665(lines 665 680) no Hoare annotation was computed. [2020-09-21 11:28:40,369 INFO L268 CegarLoopResult]: For program point L335(lines 335 337) no Hoare annotation was computed. [2020-09-21 11:28:40,369 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 16 1255) no Hoare annotation was computed. [2020-09-21 11:28:40,369 INFO L268 CegarLoopResult]: For program point L203(lines 203 205) no Hoare annotation was computed. [2020-09-21 11:28:40,369 INFO L268 CegarLoopResult]: For program point L71(lines 71 73) no Hoare annotation was computed. [2020-09-21 11:28:40,369 INFO L268 CegarLoopResult]: For program point L799(lines 799 801) no Hoare annotation was computed. [2020-09-21 11:28:40,369 INFO L268 CegarLoopResult]: For program point L667(lines 667 678) no Hoare annotation was computed. [2020-09-21 11:28:40,369 INFO L268 CegarLoopResult]: For program point L601(lines 601 616) no Hoare annotation was computed. [2020-09-21 11:28:40,369 INFO L268 CegarLoopResult]: For program point L1197(lines 1197 1212) no Hoare annotation was computed. [2020-09-21 11:28:40,370 INFO L268 CegarLoopResult]: For program point L735(lines 735 737) no Hoare annotation was computed. [2020-09-21 11:28:40,370 INFO L268 CegarLoopResult]: For program point L603(lines 603 614) no Hoare annotation was computed. [2020-09-21 11:28:40,370 INFO L268 CegarLoopResult]: For program point L537(lines 537 552) no Hoare annotation was computed. [2020-09-21 11:28:40,370 INFO L268 CegarLoopResult]: For program point L1199(lines 1199 1210) no Hoare annotation was computed. [2020-09-21 11:28:40,370 INFO L268 CegarLoopResult]: For program point L1133(lines 1133 1148) no Hoare annotation was computed. [2020-09-21 11:28:40,370 INFO L268 CegarLoopResult]: For program point L1001(lines 1001 1016) no Hoare annotation was computed. [2020-09-21 11:28:40,370 INFO L268 CegarLoopResult]: For program point L671(lines 671 673) no Hoare annotation was computed. [2020-09-21 11:28:40,370 INFO L268 CegarLoopResult]: For program point L539(lines 539 550) no Hoare annotation was computed. [2020-09-21 11:28:40,371 INFO L268 CegarLoopResult]: For program point L473(lines 473 488) no Hoare annotation was computed. [2020-09-21 11:28:40,371 INFO L268 CegarLoopResult]: For program point L1068(lines 1068 1247) no Hoare annotation was computed. [2020-09-21 11:28:40,371 INFO L268 CegarLoopResult]: For program point L1135(lines 1135 1146) no Hoare annotation was computed. [2020-09-21 11:28:40,371 INFO L268 CegarLoopResult]: For program point L1069(lines 1069 1084) no Hoare annotation was computed. [2020-09-21 11:28:40,371 INFO L268 CegarLoopResult]: For program point L1003(lines 1003 1014) no Hoare annotation was computed. [2020-09-21 11:28:40,371 INFO L268 CegarLoopResult]: For program point L937(lines 937 952) no Hoare annotation was computed. [2020-09-21 11:28:40,371 INFO L268 CegarLoopResult]: For program point L607(lines 607 609) no Hoare annotation was computed. [2020-09-21 11:28:40,371 INFO L268 CegarLoopResult]: For program point L475(lines 475 486) no Hoare annotation was computed. [2020-09-21 11:28:40,372 INFO L268 CegarLoopResult]: For program point L409(lines 409 424) no Hoare annotation was computed. [2020-09-21 11:28:40,372 INFO L268 CegarLoopResult]: For program point L277(lines 277 292) no Hoare annotation was computed. [2020-09-21 11:28:40,372 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 1254) no Hoare annotation was computed. [2020-09-21 11:28:40,372 INFO L268 CegarLoopResult]: For program point L1203(lines 1203 1205) no Hoare annotation was computed. [2020-09-21 11:28:40,372 INFO L268 CegarLoopResult]: For program point L1071(lines 1071 1082) no Hoare annotation was computed. [2020-09-21 11:28:40,372 INFO L268 CegarLoopResult]: For program point L939(lines 939 950) no Hoare annotation was computed. [2020-09-21 11:28:40,372 INFO L268 CegarLoopResult]: For program point L873(lines 873 888) no Hoare annotation was computed. [2020-09-21 11:28:40,373 INFO L268 CegarLoopResult]: For program point L543(lines 543 545) no Hoare annotation was computed. [2020-09-21 11:28:40,373 INFO L268 CegarLoopResult]: For program point L411(lines 411 422) no Hoare annotation was computed. [2020-09-21 11:28:40,373 INFO L268 CegarLoopResult]: For program point L345(lines 345 360) no Hoare annotation was computed. [2020-09-21 11:28:40,373 INFO L268 CegarLoopResult]: For program point L279(lines 279 290) no Hoare annotation was computed. [2020-09-21 11:28:40,373 INFO L268 CegarLoopResult]: For program point L213(lines 213 228) no Hoare annotation was computed. [2020-09-21 11:28:40,373 INFO L268 CegarLoopResult]: For program point L81(lines 81 96) no Hoare annotation was computed. [2020-09-21 11:28:40,373 INFO L268 CegarLoopResult]: For program point L148(lines 148 327) no Hoare annotation was computed. [2020-09-21 11:28:40,373 INFO L268 CegarLoopResult]: For program point L1139(lines 1139 1141) no Hoare annotation was computed. [2020-09-21 11:28:40,374 INFO L268 CegarLoopResult]: For program point L1007(lines 1007 1009) no Hoare annotation was computed. [2020-09-21 11:28:40,374 INFO L268 CegarLoopResult]: For program point L875(lines 875 886) no Hoare annotation was computed. [2020-09-21 11:28:40,374 INFO L268 CegarLoopResult]: For program point L809(lines 809 824) no Hoare annotation was computed. [2020-09-21 11:28:40,374 INFO L268 CegarLoopResult]: For program point L479(lines 479 481) no Hoare annotation was computed. [2020-09-21 11:28:40,374 INFO L268 CegarLoopResult]: For program point L347(lines 347 358) no Hoare annotation was computed. [2020-09-21 11:28:40,374 INFO L268 CegarLoopResult]: For program point L215(lines 215 226) no Hoare annotation was computed. [2020-09-21 11:28:40,374 INFO L268 CegarLoopResult]: For program point L149(lines 149 164) no Hoare annotation was computed. [2020-09-21 11:28:40,375 INFO L268 CegarLoopResult]: For program point L83(lines 83 94) no Hoare annotation was computed. [2020-09-21 11:28:40,375 INFO L268 CegarLoopResult]: For program point L1075(lines 1075 1077) no Hoare annotation was computed. [2020-09-21 11:28:40,375 INFO L268 CegarLoopResult]: For program point L943(lines 943 945) no Hoare annotation was computed. [2020-09-21 11:28:40,375 INFO L268 CegarLoopResult]: For program point L811(lines 811 822) no Hoare annotation was computed. [2020-09-21 11:28:40,375 INFO L268 CegarLoopResult]: For program point L745(lines 745 760) no Hoare annotation was computed. [2020-09-21 11:28:40,375 INFO L268 CegarLoopResult]: For program point L415(lines 415 417) no Hoare annotation was computed. [2020-09-21 11:28:40,375 INFO L268 CegarLoopResult]: For program point L283(lines 283 285) no Hoare annotation was computed. [2020-09-21 11:28:40,375 INFO L268 CegarLoopResult]: For program point L151(lines 151 162) no Hoare annotation was computed. [2020-09-21 11:28:40,376 INFO L268 CegarLoopResult]: For program point L879(lines 879 881) no Hoare annotation was computed. [2020-09-21 11:28:40,376 INFO L268 CegarLoopResult]: For program point L747(lines 747 758) no Hoare annotation was computed. [2020-09-21 11:28:40,376 INFO L268 CegarLoopResult]: For program point L681(lines 681 696) no Hoare annotation was computed. [2020-09-21 11:28:40,376 INFO L268 CegarLoopResult]: For program point L351(lines 351 353) no Hoare annotation was computed. [2020-09-21 11:28:40,376 INFO L268 CegarLoopResult]: For program point L219(lines 219 221) no Hoare annotation was computed. [2020-09-21 11:28:40,376 INFO L268 CegarLoopResult]: For program point L87(lines 87 89) no Hoare annotation was computed. [2020-09-21 11:28:40,376 INFO L268 CegarLoopResult]: For program point L815(lines 815 817) no Hoare annotation was computed. [2020-09-21 11:28:40,376 INFO L268 CegarLoopResult]: For program point L683(lines 683 694) no Hoare annotation was computed. [2020-09-21 11:28:40,376 INFO L268 CegarLoopResult]: For program point L617(lines 617 632) no Hoare annotation was computed. [2020-09-21 11:28:40,377 INFO L268 CegarLoopResult]: For program point L155(lines 155 157) no Hoare annotation was computed. [2020-09-21 11:28:40,377 INFO L268 CegarLoopResult]: For program point L1213(lines 1213 1228) no Hoare annotation was computed. [2020-09-21 11:28:40,377 INFO L268 CegarLoopResult]: For program point L751(lines 751 753) no Hoare annotation was computed. [2020-09-21 11:28:40,377 INFO L268 CegarLoopResult]: For program point L619(lines 619 630) no Hoare annotation was computed. [2020-09-21 11:28:40,377 INFO L268 CegarLoopResult]: For program point L553(lines 553 568) no Hoare annotation was computed. [2020-09-21 11:28:40,377 INFO L268 CegarLoopResult]: For program point L1215(lines 1215 1226) no Hoare annotation was computed. [2020-09-21 11:28:40,377 INFO L268 CegarLoopResult]: For program point L1149(lines 1149 1164) no Hoare annotation was computed. [2020-09-21 11:28:40,377 INFO L268 CegarLoopResult]: For program point L1017(lines 1017 1032) no Hoare annotation was computed. [2020-09-21 11:28:40,378 INFO L268 CegarLoopResult]: For program point L687(lines 687 689) no Hoare annotation was computed. [2020-09-21 11:28:40,378 INFO L268 CegarLoopResult]: For program point L555(lines 555 566) no Hoare annotation was computed. [2020-09-21 11:28:40,378 INFO L268 CegarLoopResult]: For program point L489(lines 489 504) no Hoare annotation was computed. [2020-09-21 11:28:40,378 INFO L268 CegarLoopResult]: For program point L1151(lines 1151 1162) no Hoare annotation was computed. [2020-09-21 11:28:40,378 INFO L268 CegarLoopResult]: For program point L1085(lines 1085 1100) no Hoare annotation was computed. [2020-09-21 11:28:40,378 INFO L268 CegarLoopResult]: For program point L1019(lines 1019 1030) no Hoare annotation was computed. [2020-09-21 11:28:40,378 INFO L268 CegarLoopResult]: For program point L953(lines 953 968) no Hoare annotation was computed. [2020-09-21 11:28:40,378 INFO L268 CegarLoopResult]: For program point L623(lines 623 625) no Hoare annotation was computed. [2020-09-21 11:28:40,379 INFO L268 CegarLoopResult]: For program point L491(lines 491 502) no Hoare annotation was computed. [2020-09-21 11:28:40,379 INFO L268 CegarLoopResult]: For program point L425(lines 425 440) no Hoare annotation was computed. [2020-09-21 11:28:40,379 INFO L268 CegarLoopResult]: For program point L293(lines 293 308) no Hoare annotation was computed. [2020-09-21 11:28:40,379 INFO L268 CegarLoopResult]: For program point L1219(lines 1219 1221) no Hoare annotation was computed. [2020-09-21 11:28:40,379 INFO L268 CegarLoopResult]: For program point L1087(lines 1087 1098) no Hoare annotation was computed. [2020-09-21 11:28:40,379 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 16 1255) the Hoare annotation is: true [2020-09-21 11:28:40,379 INFO L268 CegarLoopResult]: For program point L955(lines 955 966) no Hoare annotation was computed. [2020-09-21 11:28:40,380 INFO L268 CegarLoopResult]: For program point L889(lines 889 904) no Hoare annotation was computed. [2020-09-21 11:28:40,380 INFO L268 CegarLoopResult]: For program point L559(lines 559 561) no Hoare annotation was computed. [2020-09-21 11:28:40,380 INFO L268 CegarLoopResult]: For program point L427(lines 427 438) no Hoare annotation was computed. [2020-09-21 11:28:40,380 INFO L268 CegarLoopResult]: For program point L361(lines 361 376) no Hoare annotation was computed. [2020-09-21 11:28:40,380 INFO L268 CegarLoopResult]: For program point L295(lines 295 306) no Hoare annotation was computed. [2020-09-21 11:28:40,380 INFO L268 CegarLoopResult]: For program point L229(lines 229 244) no Hoare annotation was computed. [2020-09-21 11:28:40,380 INFO L268 CegarLoopResult]: For program point L97(lines 97 112) no Hoare annotation was computed. [2020-09-21 11:28:40,380 INFO L268 CegarLoopResult]: For program point L1155(lines 1155 1157) no Hoare annotation was computed. [2020-09-21 11:28:40,381 INFO L268 CegarLoopResult]: For program point L1023(lines 1023 1025) no Hoare annotation was computed. [2020-09-21 11:28:40,381 INFO L264 CegarLoopResult]: At program point L32-2(lines 32 1250) the Hoare annotation is: (let ((.cse0 (<= 1 main_~this_m_delta~0)) (.cse1 (= main_~this_m_conn_data_listener~0 0))) (or (and (= main_~q~0 0) (= main_~this_m_conn~0 0) .cse0 .cse1) (and (<= 4 main_~q~0) .cse0 (<= 1 main_~this_m_conn~0) .cse1))) [2020-09-21 11:28:40,381 INFO L268 CegarLoopResult]: For program point L32-3(lines 32 1250) no Hoare annotation was computed. [2020-09-21 11:28:40,381 INFO L268 CegarLoopResult]: For program point L891(lines 891 902) no Hoare annotation was computed. [2020-09-21 11:28:40,381 INFO L268 CegarLoopResult]: For program point L825(lines 825 840) no Hoare annotation was computed. [2020-09-21 11:28:40,381 INFO L268 CegarLoopResult]: For program point L495(lines 495 497) no Hoare annotation was computed. [2020-09-21 11:28:40,381 INFO L268 CegarLoopResult]: For program point L363(lines 363 374) no Hoare annotation was computed. [2020-09-21 11:28:40,381 INFO L268 CegarLoopResult]: For program point L231(lines 231 242) no Hoare annotation was computed. [2020-09-21 11:28:40,382 INFO L268 CegarLoopResult]: For program point L165(lines 165 180) no Hoare annotation was computed. [2020-09-21 11:28:40,382 INFO L268 CegarLoopResult]: For program point L99(lines 99 110) no Hoare annotation was computed. [2020-09-21 11:28:40,382 INFO L268 CegarLoopResult]: For program point L1091(lines 1091 1093) no Hoare annotation was computed. [2020-09-21 11:28:40,382 INFO L268 CegarLoopResult]: For program point L959(lines 959 961) no Hoare annotation was computed. [2020-09-21 11:28:40,382 INFO L268 CegarLoopResult]: For program point L827(lines 827 838) no Hoare annotation was computed. [2020-09-21 11:28:40,382 INFO L268 CegarLoopResult]: For program point L761(lines 761 776) no Hoare annotation was computed. [2020-09-21 11:28:40,382 INFO L268 CegarLoopResult]: For program point L431(lines 431 433) no Hoare annotation was computed. [2020-09-21 11:28:40,382 INFO L268 CegarLoopResult]: For program point L299(lines 299 301) no Hoare annotation was computed. [2020-09-21 11:28:40,383 INFO L268 CegarLoopResult]: For program point L167(lines 167 178) no Hoare annotation was computed. [2020-09-21 11:28:40,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 11:28:40 BoogieIcfgContainer [2020-09-21 11:28:40,407 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 11:28:40,410 INFO L168 Benchmark]: Toolchain (without parser) took 12665.65 ms. Allocated memory was 140.0 MB in the beginning and 442.0 MB in the end (delta: 302.0 MB). Free memory was 93.7 MB in the beginning and 213.4 MB in the end (delta: -119.7 MB). Peak memory consumption was 182.3 MB. Max. memory is 7.1 GB. [2020-09-21 11:28:40,410 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-21 11:28:40,411 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1331.50 ms. Allocated memory was 140.0 MB in the beginning and 234.9 MB in the end (delta: 94.9 MB). Free memory was 93.0 MB in the beginning and 139.5 MB in the end (delta: -46.5 MB). Peak memory consumption was 56.6 MB. Max. memory is 7.1 GB. [2020-09-21 11:28:40,412 INFO L168 Benchmark]: Boogie Preprocessor took 198.41 ms. Allocated memory is still 234.9 MB. Free memory was 139.5 MB in the beginning and 124.8 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. [2020-09-21 11:28:40,413 INFO L168 Benchmark]: RCFGBuilder took 1776.09 ms. Allocated memory was 234.9 MB in the beginning and 257.9 MB in the end (delta: 23.1 MB). Free memory was 124.8 MB in the beginning and 176.6 MB in the end (delta: -51.8 MB). Peak memory consumption was 67.4 MB. Max. memory is 7.1 GB. [2020-09-21 11:28:40,414 INFO L168 Benchmark]: TraceAbstraction took 9347.19 ms. Allocated memory was 257.9 MB in the beginning and 442.0 MB in the end (delta: 184.0 MB). Free memory was 176.6 MB in the beginning and 213.4 MB in the end (delta: -36.9 MB). Peak memory consumption was 147.1 MB. Max. memory is 7.1 GB. [2020-09-21 11:28:40,417 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1331.50 ms. Allocated memory was 140.0 MB in the beginning and 234.9 MB in the end (delta: 94.9 MB). Free memory was 93.0 MB in the beginning and 139.5 MB in the end (delta: -46.5 MB). Peak memory consumption was 56.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 198.41 ms. Allocated memory is still 234.9 MB. Free memory was 139.5 MB in the beginning and 124.8 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1776.09 ms. Allocated memory was 234.9 MB in the beginning and 257.9 MB in the end (delta: 23.1 MB). Free memory was 124.8 MB in the beginning and 176.6 MB in the end (delta: -51.8 MB). Peak memory consumption was 67.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9347.19 ms. Allocated memory was 257.9 MB in the beginning and 442.0 MB in the end (delta: 184.0 MB). Free memory was 176.6 MB in the beginning and 213.4 MB in the end (delta: -36.9 MB). Peak memory consumption was 147.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 1254]: 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: 16]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: (((((q == 0 && this_m_conn == 0) && 1 <= this_m_delta) && this_m_conn_data_listener == 0) || (((1 <= this_m_conn_data_listener && 1 <= this_m_delta) && 1 <= this_m_conn) && q == 3)) || (((4 <= q && 1 <= this_m_delta) && 1 <= this_m_conn) && this_m_conn_data_listener == 0)) || (((this_m_conn == 0 && 1 <= this_m_delta) && this_m_conn_data_listener == 0) && q == 2) - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: (((q == 0 && this_m_conn == 0) && 1 <= this_m_delta) && this_m_conn_data_listener == 0) || (((4 <= q && 1 <= this_m_delta) && 1 <= this_m_conn) && this_m_conn_data_listener == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 242 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.7s, OverallIterations: 12, TraceHistogramMax: 3, AutomataDifference: 6.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 4082 SDtfs, 6623 SDslu, 80 SDs, 0 SdLazy, 2270 SolverSat, 534 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 80 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=404occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 27 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 13 NumberOfFragments, 112 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 7 FomulaSimplificationsInter, 210 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 339 NumberOfCodeBlocks, 339 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 327 ConstructedInterpolants, 0 QuantifiedInterpolants, 23846 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 53/53 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...