/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 --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/locks/test_locks_10.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 14:57:50,921 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 14:57:50,926 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 14:57:50,968 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 14:57:50,969 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 14:57:50,978 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 14:57:50,981 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 14:57:50,985 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 14:57:50,988 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 14:57:50,991 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 14:57:50,993 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 14:57:50,994 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 14:57:50,994 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 14:57:50,997 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 14:57:51,000 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 14:57:51,003 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 14:57:51,004 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 14:57:51,006 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 14:57:51,008 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 14:57:51,014 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 14:57:51,016 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 14:57:51,016 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 14:57:51,021 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 14:57:51,022 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 14:57:51,024 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-24 14:57:51,033 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 14:57:51,034 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 14:57:51,035 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 14:57:51,036 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 [2020-09-24 14:57:51,062 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 14:57:51,062 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 14:57:51,064 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 14:57:51,064 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 14:57:51,065 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 14:57:51,065 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 14:57:51,065 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 14:57:51,065 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 14:57:51,065 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 14:57:51,066 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 14:57:51,066 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 14:57:51,066 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 14:57:51,066 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 14:57:51,067 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 14:57:51,067 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 14:57:51,067 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 14:57:51,067 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 14:57:51,067 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 14:57:51,068 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 14:57:51,068 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 14:57:51,068 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 14:57:51,068 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 14:57:51,069 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 14:57:51,069 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 14:57:51,069 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 14:57:51,069 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 14:57:51,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 14:57:51,070 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 14:57:51,070 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 14:57:51,070 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.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-09-24 14:57:51,591 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 14:57:51,610 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 14:57:51,615 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 14:57:51,617 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 14:57:51,617 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 14:57:51,619 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_10.c [2020-09-24 14:57:51,718 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/21affc998/8fcc54a9385e46809e018598f7c296c4/FLAG6880cf774 [2020-09-24 14:57:52,285 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 14:57:52,286 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/locks/test_locks_10.c [2020-09-24 14:57:52,298 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/21affc998/8fcc54a9385e46809e018598f7c296c4/FLAG6880cf774 [2020-09-24 14:57:52,622 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/21affc998/8fcc54a9385e46809e018598f7c296c4 [2020-09-24 14:57:52,639 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 14:57:52,647 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 14:57:52,651 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 14:57:52,652 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 14:57:52,656 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 14:57:52,657 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:57:52" (1/1) ... [2020-09-24 14:57:52,663 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72b6e365 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:52, skipping insertion in model container [2020-09-24 14:57:52,663 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:57:52" (1/1) ... [2020-09-24 14:57:52,675 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 14:57:52,716 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 14:57:52,953 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 14:57:52,959 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 14:57:52,988 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 14:57:53,008 INFO L208 MainTranslator]: Completed translation [2020-09-24 14:57:53,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:53 WrapperNode [2020-09-24 14:57:53,008 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 14:57:53,009 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 14:57:53,009 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 14:57:53,009 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 14:57:53,114 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:53" (1/1) ... [2020-09-24 14:57:53,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:53" (1/1) ... [2020-09-24 14:57:53,123 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:53" (1/1) ... [2020-09-24 14:57:53,123 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:53" (1/1) ... [2020-09-24 14:57:53,130 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:53" (1/1) ... [2020-09-24 14:57:53,139 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:53" (1/1) ... [2020-09-24 14:57:53,141 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:53" (1/1) ... [2020-09-24 14:57:53,144 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 14:57:53,145 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 14:57:53,145 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 14:57:53,145 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 14:57:53,149 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:53" (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 [2020-09-24 14:57:53,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 14:57:53,233 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 14:57:53,233 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 14:57:53,235 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 14:57:53,235 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 14:57:53,236 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 14:57:53,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 14:57:53,236 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 14:57:53,713 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 14:57:53,714 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 14:57:53,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:57:53 BoogieIcfgContainer [2020-09-24 14:57:53,721 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 14:57:53,722 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 14:57:53,722 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 14:57:53,726 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 14:57:53,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 02:57:52" (1/3) ... [2020-09-24 14:57:53,727 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c04e254 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:57:53, skipping insertion in model container [2020-09-24 14:57:53,728 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:57:53" (2/3) ... [2020-09-24 14:57:53,728 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c04e254 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:57:53, skipping insertion in model container [2020-09-24 14:57:53,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:57:53" (3/3) ... [2020-09-24 14:57:53,733 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_10.c [2020-09-24 14:57:53,746 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 14:57:53,761 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 14:57:53,785 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 14:57:53,822 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 14:57:53,823 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 14:57:53,823 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 14:57:53,823 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 14:57:53,823 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 14:57:53,823 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 14:57:53,823 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 14:57:53,824 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 14:57:53,848 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states. [2020-09-24 14:57:53,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-24 14:57:53,859 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:53,860 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:53,861 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:53,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:53,868 INFO L82 PathProgramCache]: Analyzing trace with hash -74913912, now seen corresponding path program 1 times [2020-09-24 14:57:53,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:53,877 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1693469757] [2020-09-24 14:57:53,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:54,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:54,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:54,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:54,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:57:54,158 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1693469757] [2020-09-24 14:57:54,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:54,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:54,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624304729] [2020-09-24 14:57:54,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:54,170 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:54,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:54,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:54,192 INFO L87 Difference]: Start difference. First operand 118 states. Second operand 3 states. [2020-09-24 14:57:54,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:54,277 INFO L93 Difference]: Finished difference Result 257 states and 353 transitions. [2020-09-24 14:57:54,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:54,279 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2020-09-24 14:57:54,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:54,299 INFO L225 Difference]: With dead ends: 257 [2020-09-24 14:57:54,299 INFO L226 Difference]: Without dead ends: 176 [2020-09-24 14:57:54,304 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:54,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-09-24 14:57:54,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 174. [2020-09-24 14:57:54,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-09-24 14:57:54,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 230 transitions. [2020-09-24 14:57:54,375 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 230 transitions. Word has length 73 [2020-09-24 14:57:54,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:54,376 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 230 transitions. [2020-09-24 14:57:54,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:54,377 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 230 transitions. [2020-09-24 14:57:54,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-09-24 14:57:54,380 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:54,380 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:54,381 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 14:57:54,381 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:54,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:54,382 INFO L82 PathProgramCache]: Analyzing trace with hash 328701044, now seen corresponding path program 1 times [2020-09-24 14:57:54,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:54,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1603044018] [2020-09-24 14:57:54,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:54,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:54,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:54,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:54,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:57:54,500 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1603044018] [2020-09-24 14:57:54,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:54,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:54,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621957813] [2020-09-24 14:57:54,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:54,503 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:54,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:54,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:54,504 INFO L87 Difference]: Start difference. First operand 174 states and 230 transitions. Second operand 3 states. [2020-09-24 14:57:54,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:54,542 INFO L93 Difference]: Finished difference Result 211 states and 283 transitions. [2020-09-24 14:57:54,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:54,546 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2020-09-24 14:57:54,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:54,552 INFO L225 Difference]: With dead ends: 211 [2020-09-24 14:57:54,552 INFO L226 Difference]: Without dead ends: 209 [2020-09-24 14:57:54,554 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:54,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-09-24 14:57:54,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 174. [2020-09-24 14:57:54,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-09-24 14:57:54,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 229 transitions. [2020-09-24 14:57:54,592 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 229 transitions. Word has length 74 [2020-09-24 14:57:54,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:54,593 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 229 transitions. [2020-09-24 14:57:54,593 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:54,594 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 229 transitions. [2020-09-24 14:57:54,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-09-24 14:57:54,597 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:54,600 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:54,601 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 14:57:54,601 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:54,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:54,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1972879950, now seen corresponding path program 1 times [2020-09-24 14:57:54,602 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:54,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [698142403] [2020-09-24 14:57:54,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:54,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:54,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:54,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:54,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:57:54,689 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [698142403] [2020-09-24 14:57:54,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:54,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:54,690 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301103839] [2020-09-24 14:57:54,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:54,691 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:54,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:54,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:54,692 INFO L87 Difference]: Start difference. First operand 174 states and 229 transitions. Second operand 3 states. [2020-09-24 14:57:54,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:54,733 INFO L93 Difference]: Finished difference Result 426 states and 589 transitions. [2020-09-24 14:57:54,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:54,734 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2020-09-24 14:57:54,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:54,737 INFO L225 Difference]: With dead ends: 426 [2020-09-24 14:57:54,737 INFO L226 Difference]: Without dead ends: 297 [2020-09-24 14:57:54,739 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:54,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2020-09-24 14:57:54,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 295. [2020-09-24 14:57:54,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2020-09-24 14:57:54,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 400 transitions. [2020-09-24 14:57:54,762 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 400 transitions. Word has length 74 [2020-09-24 14:57:54,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:54,762 INFO L479 AbstractCegarLoop]: Abstraction has 295 states and 400 transitions. [2020-09-24 14:57:54,762 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:54,763 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 400 transitions. [2020-09-24 14:57:54,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-09-24 14:57:54,766 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:54,766 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:54,766 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 14:57:54,767 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:54,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:54,767 INFO L82 PathProgramCache]: Analyzing trace with hash -618815907, now seen corresponding path program 1 times [2020-09-24 14:57:54,767 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:54,768 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2072489842] [2020-09-24 14:57:54,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:54,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:54,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:54,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:54,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:57:54,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2072489842] [2020-09-24 14:57:54,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:54,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:54,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624428007] [2020-09-24 14:57:54,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:54,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:54,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:54,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:54,827 INFO L87 Difference]: Start difference. First operand 295 states and 400 transitions. Second operand 3 states. [2020-09-24 14:57:54,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:54,844 INFO L93 Difference]: Finished difference Result 361 states and 496 transitions. [2020-09-24 14:57:54,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:54,845 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2020-09-24 14:57:54,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:54,847 INFO L225 Difference]: With dead ends: 361 [2020-09-24 14:57:54,848 INFO L226 Difference]: Without dead ends: 359 [2020-09-24 14:57:54,848 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:54,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2020-09-24 14:57:54,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 295. [2020-09-24 14:57:54,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2020-09-24 14:57:54,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 398 transitions. [2020-09-24 14:57:54,864 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 398 transitions. Word has length 75 [2020-09-24 14:57:54,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:54,865 INFO L479 AbstractCegarLoop]: Abstraction has 295 states and 398 transitions. [2020-09-24 14:57:54,865 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:54,865 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 398 transitions. [2020-09-24 14:57:54,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-09-24 14:57:54,868 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:54,868 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:54,869 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 14:57:54,869 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:54,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:54,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1029980604, now seen corresponding path program 1 times [2020-09-24 14:57:54,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:54,870 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1869067560] [2020-09-24 14:57:54,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:54,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:54,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:54,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:54,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:57:54,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1869067560] [2020-09-24 14:57:54,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:54,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:54,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422318331] [2020-09-24 14:57:54,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:54,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:54,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:54,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:54,966 INFO L87 Difference]: Start difference. First operand 295 states and 398 transitions. Second operand 3 states. [2020-09-24 14:57:54,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:54,988 INFO L93 Difference]: Finished difference Result 783 states and 1088 transitions. [2020-09-24 14:57:54,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:54,989 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2020-09-24 14:57:54,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:54,992 INFO L225 Difference]: With dead ends: 783 [2020-09-24 14:57:54,992 INFO L226 Difference]: Without dead ends: 533 [2020-09-24 14:57:54,995 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:54,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 533 states. [2020-09-24 14:57:55,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 533 to 531. [2020-09-24 14:57:55,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 531 states. [2020-09-24 14:57:55,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 726 transitions. [2020-09-24 14:57:55,018 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 726 transitions. Word has length 75 [2020-09-24 14:57:55,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:55,018 INFO L479 AbstractCegarLoop]: Abstraction has 531 states and 726 transitions. [2020-09-24 14:57:55,018 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:55,019 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 726 transitions. [2020-09-24 14:57:55,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-24 14:57:55,021 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:55,022 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:55,022 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 14:57:55,022 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:55,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:55,023 INFO L82 PathProgramCache]: Analyzing trace with hash 72930056, now seen corresponding path program 1 times [2020-09-24 14:57:55,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:55,023 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1424225630] [2020-09-24 14:57:55,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:55,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:55,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:55,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:55,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:57:55,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1424225630] [2020-09-24 14:57:55,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:55,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:55,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397084855] [2020-09-24 14:57:55,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:55,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:55,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:55,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:55,073 INFO L87 Difference]: Start difference. First operand 531 states and 726 transitions. Second operand 3 states. [2020-09-24 14:57:55,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:55,095 INFO L93 Difference]: Finished difference Result 651 states and 900 transitions. [2020-09-24 14:57:55,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:55,095 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2020-09-24 14:57:55,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:55,099 INFO L225 Difference]: With dead ends: 651 [2020-09-24 14:57:55,100 INFO L226 Difference]: Without dead ends: 649 [2020-09-24 14:57:55,101 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:55,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2020-09-24 14:57:55,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 531. [2020-09-24 14:57:55,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 531 states. [2020-09-24 14:57:55,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 722 transitions. [2020-09-24 14:57:55,122 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 722 transitions. Word has length 76 [2020-09-24 14:57:55,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:55,123 INFO L479 AbstractCegarLoop]: Abstraction has 531 states and 722 transitions. [2020-09-24 14:57:55,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:55,123 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 722 transitions. [2020-09-24 14:57:55,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-24 14:57:55,124 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:55,125 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:55,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 14:57:55,125 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:55,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:55,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1864872322, now seen corresponding path program 1 times [2020-09-24 14:57:55,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:55,126 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [161226057] [2020-09-24 14:57:55,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:55,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:55,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:55,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:55,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:57:55,187 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [161226057] [2020-09-24 14:57:55,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:55,188 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:55,188 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824912224] [2020-09-24 14:57:55,189 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:55,189 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:55,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:55,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:55,191 INFO L87 Difference]: Start difference. First operand 531 states and 722 transitions. Second operand 3 states. [2020-09-24 14:57:55,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:55,239 INFO L93 Difference]: Finished difference Result 1479 states and 2044 transitions. [2020-09-24 14:57:55,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:55,241 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 76 [2020-09-24 14:57:55,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:55,247 INFO L225 Difference]: With dead ends: 1479 [2020-09-24 14:57:55,247 INFO L226 Difference]: Without dead ends: 993 [2020-09-24 14:57:55,250 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:55,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 993 states. [2020-09-24 14:57:55,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 993 to 991. [2020-09-24 14:57:55,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 991 states. [2020-09-24 14:57:55,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1350 transitions. [2020-09-24 14:57:55,295 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1350 transitions. Word has length 76 [2020-09-24 14:57:55,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:55,295 INFO L479 AbstractCegarLoop]: Abstraction has 991 states and 1350 transitions. [2020-09-24 14:57:55,296 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:55,296 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1350 transitions. [2020-09-24 14:57:55,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-09-24 14:57:55,297 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:55,298 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:55,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 14:57:55,298 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:55,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:55,299 INFO L82 PathProgramCache]: Analyzing trace with hash 1976712176, now seen corresponding path program 1 times [2020-09-24 14:57:55,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:55,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [936251315] [2020-09-24 14:57:55,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:55,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:55,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:55,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:55,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:57:55,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [936251315] [2020-09-24 14:57:55,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:55,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:55,379 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343802482] [2020-09-24 14:57:55,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:55,380 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:55,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:55,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:55,381 INFO L87 Difference]: Start difference. First operand 991 states and 1350 transitions. Second operand 3 states. [2020-09-24 14:57:55,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:55,425 INFO L93 Difference]: Finished difference Result 2835 states and 3896 transitions. [2020-09-24 14:57:55,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:55,425 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-09-24 14:57:55,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:55,435 INFO L225 Difference]: With dead ends: 2835 [2020-09-24 14:57:55,435 INFO L226 Difference]: Without dead ends: 1889 [2020-09-24 14:57:55,438 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:55,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1889 states. [2020-09-24 14:57:55,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1889 to 1887. [2020-09-24 14:57:55,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1887 states. [2020-09-24 14:57:55,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1887 states to 1887 states and 2558 transitions. [2020-09-24 14:57:55,514 INFO L78 Accepts]: Start accepts. Automaton has 1887 states and 2558 transitions. Word has length 77 [2020-09-24 14:57:55,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:55,514 INFO L479 AbstractCegarLoop]: Abstraction has 1887 states and 2558 transitions. [2020-09-24 14:57:55,514 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:55,515 INFO L276 IsEmpty]: Start isEmpty. Operand 1887 states and 2558 transitions. [2020-09-24 14:57:55,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-09-24 14:57:55,522 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:55,523 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:55,523 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 14:57:55,523 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:55,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:55,524 INFO L82 PathProgramCache]: Analyzing trace with hash 42218801, now seen corresponding path program 1 times [2020-09-24 14:57:55,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:55,525 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1704855543] [2020-09-24 14:57:55,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:55,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:55,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:55,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:55,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:57:55,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1704855543] [2020-09-24 14:57:55,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:55,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:55,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027166808] [2020-09-24 14:57:55,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:55,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:55,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:55,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:55,594 INFO L87 Difference]: Start difference. First operand 1887 states and 2558 transitions. Second operand 3 states. [2020-09-24 14:57:55,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:55,625 INFO L93 Difference]: Finished difference Result 2307 states and 3152 transitions. [2020-09-24 14:57:55,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:55,625 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 77 [2020-09-24 14:57:55,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:55,636 INFO L225 Difference]: With dead ends: 2307 [2020-09-24 14:57:55,636 INFO L226 Difference]: Without dead ends: 2305 [2020-09-24 14:57:55,638 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:55,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2305 states. [2020-09-24 14:57:55,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2305 to 1887. [2020-09-24 14:57:55,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1887 states. [2020-09-24 14:57:55,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1887 states to 1887 states and 2542 transitions. [2020-09-24 14:57:55,686 INFO L78 Accepts]: Start accepts. Automaton has 1887 states and 2542 transitions. Word has length 77 [2020-09-24 14:57:55,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:55,687 INFO L479 AbstractCegarLoop]: Abstraction has 1887 states and 2542 transitions. [2020-09-24 14:57:55,687 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:55,687 INFO L276 IsEmpty]: Start isEmpty. Operand 1887 states and 2542 transitions. [2020-09-24 14:57:55,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-09-24 14:57:55,689 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:55,690 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:55,690 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 14:57:55,690 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:55,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:55,691 INFO L82 PathProgramCache]: Analyzing trace with hash -909829732, now seen corresponding path program 1 times [2020-09-24 14:57:55,691 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:55,691 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1989785144] [2020-09-24 14:57:55,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:55,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:55,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:55,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:55,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:57:55,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1989785144] [2020-09-24 14:57:55,728 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:55,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:55,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109915894] [2020-09-24 14:57:55,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:55,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:55,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:55,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:55,730 INFO L87 Difference]: Start difference. First operand 1887 states and 2542 transitions. Second operand 3 states. [2020-09-24 14:57:55,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:55,759 INFO L93 Difference]: Finished difference Result 2291 states and 3104 transitions. [2020-09-24 14:57:55,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:55,760 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2020-09-24 14:57:55,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:55,770 INFO L225 Difference]: With dead ends: 2291 [2020-09-24 14:57:55,770 INFO L226 Difference]: Without dead ends: 2289 [2020-09-24 14:57:55,772 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:55,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2289 states. [2020-09-24 14:57:55,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2289 to 1887. [2020-09-24 14:57:55,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1887 states. [2020-09-24 14:57:55,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1887 states to 1887 states and 2526 transitions. [2020-09-24 14:57:55,822 INFO L78 Accepts]: Start accepts. Automaton has 1887 states and 2526 transitions. Word has length 78 [2020-09-24 14:57:55,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:55,822 INFO L479 AbstractCegarLoop]: Abstraction has 1887 states and 2526 transitions. [2020-09-24 14:57:55,822 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:55,823 INFO L276 IsEmpty]: Start isEmpty. Operand 1887 states and 2526 transitions. [2020-09-24 14:57:55,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-09-24 14:57:55,825 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:55,825 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:55,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 14:57:55,825 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:55,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:55,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1148780726, now seen corresponding path program 1 times [2020-09-24 14:57:55,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:55,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1839816494] [2020-09-24 14:57:55,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:55,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:55,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:55,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:55,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:57:55,860 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1839816494] [2020-09-24 14:57:55,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:55,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:55,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680403201] [2020-09-24 14:57:55,861 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:55,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:55,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:55,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:55,862 INFO L87 Difference]: Start difference. First operand 1887 states and 2526 transitions. Second operand 3 states. [2020-09-24 14:57:55,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:55,910 INFO L93 Difference]: Finished difference Result 5475 states and 7360 transitions. [2020-09-24 14:57:55,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:55,911 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 78 [2020-09-24 14:57:55,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:55,926 INFO L225 Difference]: With dead ends: 5475 [2020-09-24 14:57:55,927 INFO L226 Difference]: Without dead ends: 3633 [2020-09-24 14:57:55,931 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:55,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3633 states. [2020-09-24 14:57:56,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3633 to 3631. [2020-09-24 14:57:56,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3631 states. [2020-09-24 14:57:56,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3631 states to 3631 states and 4814 transitions. [2020-09-24 14:57:56,055 INFO L78 Accepts]: Start accepts. Automaton has 3631 states and 4814 transitions. Word has length 78 [2020-09-24 14:57:56,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:56,055 INFO L479 AbstractCegarLoop]: Abstraction has 3631 states and 4814 transitions. [2020-09-24 14:57:56,055 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:56,055 INFO L276 IsEmpty]: Start isEmpty. Operand 3631 states and 4814 transitions. [2020-09-24 14:57:56,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-24 14:57:56,059 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:56,059 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:56,059 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 14:57:56,059 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:56,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:56,060 INFO L82 PathProgramCache]: Analyzing trace with hash 1252709924, now seen corresponding path program 1 times [2020-09-24 14:57:56,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:56,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [640736583] [2020-09-24 14:57:56,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:56,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:56,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:56,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:56,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:57:56,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [640736583] [2020-09-24 14:57:56,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:56,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:56,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228663780] [2020-09-24 14:57:56,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:56,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:56,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:56,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:56,101 INFO L87 Difference]: Start difference. First operand 3631 states and 4814 transitions. Second operand 3 states. [2020-09-24 14:57:56,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:56,178 INFO L93 Difference]: Finished difference Result 10611 states and 14096 transitions. [2020-09-24 14:57:56,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:56,179 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2020-09-24 14:57:56,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:56,214 INFO L225 Difference]: With dead ends: 10611 [2020-09-24 14:57:56,214 INFO L226 Difference]: Without dead ends: 7025 [2020-09-24 14:57:56,225 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:56,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7025 states. [2020-09-24 14:57:56,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7025 to 7023. [2020-09-24 14:57:56,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7023 states. [2020-09-24 14:57:56,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7023 states to 7023 states and 9198 transitions. [2020-09-24 14:57:56,413 INFO L78 Accepts]: Start accepts. Automaton has 7023 states and 9198 transitions. Word has length 79 [2020-09-24 14:57:56,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:56,414 INFO L479 AbstractCegarLoop]: Abstraction has 7023 states and 9198 transitions. [2020-09-24 14:57:56,414 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:56,414 INFO L276 IsEmpty]: Start isEmpty. Operand 7023 states and 9198 transitions. [2020-09-24 14:57:56,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-24 14:57:56,420 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:56,420 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:56,420 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-24 14:57:56,420 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:56,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:56,421 INFO L82 PathProgramCache]: Analyzing trace with hash -358562811, now seen corresponding path program 1 times [2020-09-24 14:57:56,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:56,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [452247585] [2020-09-24 14:57:56,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:56,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:56,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:56,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:56,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:57:56,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [452247585] [2020-09-24 14:57:56,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:56,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:56,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480518368] [2020-09-24 14:57:56,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:56,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:56,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:56,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:56,458 INFO L87 Difference]: Start difference. First operand 7023 states and 9198 transitions. Second operand 3 states. [2020-09-24 14:57:56,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:56,555 INFO L93 Difference]: Finished difference Result 8435 states and 11056 transitions. [2020-09-24 14:57:56,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:56,556 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 79 [2020-09-24 14:57:56,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:56,590 INFO L225 Difference]: With dead ends: 8435 [2020-09-24 14:57:56,590 INFO L226 Difference]: Without dead ends: 8433 [2020-09-24 14:57:56,593 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:56,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8433 states. [2020-09-24 14:57:56,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8433 to 7023. [2020-09-24 14:57:56,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7023 states. [2020-09-24 14:57:56,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7023 states to 7023 states and 9134 transitions. [2020-09-24 14:57:56,766 INFO L78 Accepts]: Start accepts. Automaton has 7023 states and 9134 transitions. Word has length 79 [2020-09-24 14:57:56,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:56,766 INFO L479 AbstractCegarLoop]: Abstraction has 7023 states and 9134 transitions. [2020-09-24 14:57:56,766 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:56,766 INFO L276 IsEmpty]: Start isEmpty. Operand 7023 states and 9134 transitions. [2020-09-24 14:57:56,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-24 14:57:56,772 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:56,773 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:56,773 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-24 14:57:56,773 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:56,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:56,774 INFO L82 PathProgramCache]: Analyzing trace with hash -449157072, now seen corresponding path program 1 times [2020-09-24 14:57:56,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:56,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1701078211] [2020-09-24 14:57:56,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:56,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:56,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:56,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:56,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:57:56,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1701078211] [2020-09-24 14:57:56,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:56,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:56,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028096126] [2020-09-24 14:57:56,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:56,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:56,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:56,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:56,819 INFO L87 Difference]: Start difference. First operand 7023 states and 9134 transitions. Second operand 3 states. [2020-09-24 14:57:56,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:56,898 INFO L93 Difference]: Finished difference Result 8371 states and 10864 transitions. [2020-09-24 14:57:56,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:56,899 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-09-24 14:57:56,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:56,919 INFO L225 Difference]: With dead ends: 8371 [2020-09-24 14:57:56,919 INFO L226 Difference]: Without dead ends: 8369 [2020-09-24 14:57:56,923 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:56,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8369 states. [2020-09-24 14:57:57,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8369 to 7023. [2020-09-24 14:57:57,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7023 states. [2020-09-24 14:57:57,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7023 states to 7023 states and 9070 transitions. [2020-09-24 14:57:57,113 INFO L78 Accepts]: Start accepts. Automaton has 7023 states and 9070 transitions. Word has length 80 [2020-09-24 14:57:57,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:57,113 INFO L479 AbstractCegarLoop]: Abstraction has 7023 states and 9070 transitions. [2020-09-24 14:57:57,114 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:57,114 INFO L276 IsEmpty]: Start isEmpty. Operand 7023 states and 9070 transitions. [2020-09-24 14:57:57,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-24 14:57:57,120 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:57,120 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:57,120 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-24 14:57:57,120 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:57,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:57,121 INFO L82 PathProgramCache]: Analyzing trace with hash 179548138, now seen corresponding path program 1 times [2020-09-24 14:57:57,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:57,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1530778276] [2020-09-24 14:57:57,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:57,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:57,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:57,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:57,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:57:57,207 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1530778276] [2020-09-24 14:57:57,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:57,208 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:57,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955737208] [2020-09-24 14:57:57,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:57,208 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:57,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:57,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:57,209 INFO L87 Difference]: Start difference. First operand 7023 states and 9070 transitions. Second operand 3 states. [2020-09-24 14:57:57,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:57,336 INFO L93 Difference]: Finished difference Result 20595 states and 26608 transitions. [2020-09-24 14:57:57,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:57,337 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2020-09-24 14:57:57,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:57,366 INFO L225 Difference]: With dead ends: 20595 [2020-09-24 14:57:57,366 INFO L226 Difference]: Without dead ends: 13617 [2020-09-24 14:57:57,383 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:57,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13617 states. [2020-09-24 14:57:57,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13617 to 13615. [2020-09-24 14:57:57,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13615 states. [2020-09-24 14:57:57,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13615 states to 13615 states and 17326 transitions. [2020-09-24 14:57:57,685 INFO L78 Accepts]: Start accepts. Automaton has 13615 states and 17326 transitions. Word has length 80 [2020-09-24 14:57:57,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:57,686 INFO L479 AbstractCegarLoop]: Abstraction has 13615 states and 17326 transitions. [2020-09-24 14:57:57,686 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:57,686 INFO L276 IsEmpty]: Start isEmpty. Operand 13615 states and 17326 transitions. [2020-09-24 14:57:57,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-09-24 14:57:57,695 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:57,695 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:57,695 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-24 14:57:57,696 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:57,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:57,696 INFO L82 PathProgramCache]: Analyzing trace with hash 1037388505, now seen corresponding path program 1 times [2020-09-24 14:57:57,696 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:57,696 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [690208928] [2020-09-24 14:57:57,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:57,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:57,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:57,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:57,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:57:57,811 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [690208928] [2020-09-24 14:57:57,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:57,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:57,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299560610] [2020-09-24 14:57:57,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:57,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:57,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:57,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:57,813 INFO L87 Difference]: Start difference. First operand 13615 states and 17326 transitions. Second operand 3 states. [2020-09-24 14:57:57,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:57,926 INFO L93 Difference]: Finished difference Result 16051 states and 20272 transitions. [2020-09-24 14:57:57,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:57,927 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 81 [2020-09-24 14:57:57,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:57,956 INFO L225 Difference]: With dead ends: 16051 [2020-09-24 14:57:57,956 INFO L226 Difference]: Without dead ends: 16049 [2020-09-24 14:57:57,963 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:57,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16049 states. [2020-09-24 14:57:58,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16049 to 13615. [2020-09-24 14:57:58,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13615 states. [2020-09-24 14:57:58,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13615 states to 13615 states and 17198 transitions. [2020-09-24 14:57:58,239 INFO L78 Accepts]: Start accepts. Automaton has 13615 states and 17198 transitions. Word has length 81 [2020-09-24 14:57:58,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:58,239 INFO L479 AbstractCegarLoop]: Abstraction has 13615 states and 17198 transitions. [2020-09-24 14:57:58,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:58,240 INFO L276 IsEmpty]: Start isEmpty. Operand 13615 states and 17198 transitions. [2020-09-24 14:57:58,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-09-24 14:57:58,248 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:58,249 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:58,249 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-24 14:57:58,249 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:58,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:58,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1271271512, now seen corresponding path program 1 times [2020-09-24 14:57:58,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:58,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2122844019] [2020-09-24 14:57:58,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:58,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:58,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:58,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:58,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:57:58,286 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2122844019] [2020-09-24 14:57:58,286 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:58,287 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:58,287 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647324165] [2020-09-24 14:57:58,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:58,288 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:58,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:58,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:58,288 INFO L87 Difference]: Start difference. First operand 13615 states and 17198 transitions. Second operand 3 states. [2020-09-24 14:57:58,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:57:58,603 INFO L93 Difference]: Finished difference Result 39987 states and 50480 transitions. [2020-09-24 14:57:58,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:57:58,604 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 81 [2020-09-24 14:57:58,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:57:58,652 INFO L225 Difference]: With dead ends: 39987 [2020-09-24 14:57:58,652 INFO L226 Difference]: Without dead ends: 26417 [2020-09-24 14:57:58,681 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:58,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26417 states. [2020-09-24 14:57:59,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26417 to 26415. [2020-09-24 14:57:59,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26415 states. [2020-09-24 14:57:59,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26415 states to 26415 states and 32814 transitions. [2020-09-24 14:57:59,801 INFO L78 Accepts]: Start accepts. Automaton has 26415 states and 32814 transitions. Word has length 81 [2020-09-24 14:57:59,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:57:59,801 INFO L479 AbstractCegarLoop]: Abstraction has 26415 states and 32814 transitions. [2020-09-24 14:57:59,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:57:59,801 INFO L276 IsEmpty]: Start isEmpty. Operand 26415 states and 32814 transitions. [2020-09-24 14:57:59,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-09-24 14:57:59,820 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:57:59,821 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:57:59,821 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-24 14:57:59,821 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:57:59,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:57:59,822 INFO L82 PathProgramCache]: Analyzing trace with hash -124338492, now seen corresponding path program 1 times [2020-09-24 14:57:59,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:57:59,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [69808397] [2020-09-24 14:57:59,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:57:59,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:59,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:57:59,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:57:59,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:57:59,855 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [69808397] [2020-09-24 14:57:59,856 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:57:59,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:57:59,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929163006] [2020-09-24 14:57:59,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:57:59,857 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:57:59,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:57:59,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:57:59,857 INFO L87 Difference]: Start difference. First operand 26415 states and 32814 transitions. Second operand 3 states. [2020-09-24 14:58:00,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:58:00,080 INFO L93 Difference]: Finished difference Result 30771 states and 37680 transitions. [2020-09-24 14:58:00,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:58:00,081 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 82 [2020-09-24 14:58:00,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:58:00,140 INFO L225 Difference]: With dead ends: 30771 [2020-09-24 14:58:00,141 INFO L226 Difference]: Without dead ends: 30769 [2020-09-24 14:58:00,154 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:58:00,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30769 states. [2020-09-24 14:58:00,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30769 to 26415. [2020-09-24 14:58:00,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26415 states. [2020-09-24 14:58:00,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26415 states to 26415 states and 32558 transitions. [2020-09-24 14:58:00,761 INFO L78 Accepts]: Start accepts. Automaton has 26415 states and 32558 transitions. Word has length 82 [2020-09-24 14:58:00,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:58:00,762 INFO L479 AbstractCegarLoop]: Abstraction has 26415 states and 32558 transitions. [2020-09-24 14:58:00,762 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:58:00,762 INFO L276 IsEmpty]: Start isEmpty. Operand 26415 states and 32558 transitions. [2020-09-24 14:58:00,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-09-24 14:58:00,777 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:58:00,778 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:58:00,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-24 14:58:00,778 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:58:00,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:58:00,778 INFO L82 PathProgramCache]: Analyzing trace with hash 754958110, now seen corresponding path program 1 times [2020-09-24 14:58:00,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:58:00,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [859961152] [2020-09-24 14:58:00,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:58:00,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:00,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:58:00,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:00,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:58:00,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [859961152] [2020-09-24 14:58:00,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:58:00,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:58:00,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861837668] [2020-09-24 14:58:00,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:58:00,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:58:00,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:58:00,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:58:00,816 INFO L87 Difference]: Start difference. First operand 26415 states and 32558 transitions. Second operand 3 states. [2020-09-24 14:58:01,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:58:01,184 INFO L93 Difference]: Finished difference Result 77617 states and 95535 transitions. [2020-09-24 14:58:01,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:58:01,184 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 82 [2020-09-24 14:58:01,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:58:01,237 INFO L225 Difference]: With dead ends: 77617 [2020-09-24 14:58:01,238 INFO L226 Difference]: Without dead ends: 26415 [2020-09-24 14:58:01,315 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:58:01,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26415 states. [2020-09-24 14:58:01,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26415 to 26415. [2020-09-24 14:58:01,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26415 states. [2020-09-24 14:58:01,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26415 states to 26415 states and 31534 transitions. [2020-09-24 14:58:01,906 INFO L78 Accepts]: Start accepts. Automaton has 26415 states and 31534 transitions. Word has length 82 [2020-09-24 14:58:01,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:58:01,906 INFO L479 AbstractCegarLoop]: Abstraction has 26415 states and 31534 transitions. [2020-09-24 14:58:01,907 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:58:01,907 INFO L276 IsEmpty]: Start isEmpty. Operand 26415 states and 31534 transitions. [2020-09-24 14:58:01,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-09-24 14:58:01,922 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:58:01,922 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:58:01,922 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-24 14:58:01,923 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:58:01,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:58:01,923 INFO L82 PathProgramCache]: Analyzing trace with hash -1778136659, now seen corresponding path program 1 times [2020-09-24 14:58:01,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:58:01,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1042956487] [2020-09-24 14:58:01,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:58:01,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:01,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:58:01,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:58:01,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:58:01,957 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1042956487] [2020-09-24 14:58:01,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:58:01,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 14:58:01,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946461313] [2020-09-24 14:58:01,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 14:58:01,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:58:01,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 14:58:01,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:58:01,959 INFO L87 Difference]: Start difference. First operand 26415 states and 31534 transitions. Second operand 3 states. [2020-09-24 14:58:02,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:58:02,094 INFO L93 Difference]: Finished difference Result 26415 states and 31534 transitions. [2020-09-24 14:58:02,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 14:58:02,095 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 83 [2020-09-24 14:58:02,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:58:02,096 INFO L225 Difference]: With dead ends: 26415 [2020-09-24 14:58:02,096 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 14:58:02,126 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 14:58:02,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 14:58:02,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 14:58:02,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 14:58:02,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 14:58:02,127 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 83 [2020-09-24 14:58:02,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:58:02,128 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 14:58:02,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 14:58:02,128 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 14:58:02,128 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 14:58:02,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-24 14:58:02,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 14:58:02,165 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-24 14:58:02,165 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 14:58:02,165 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 14:58:02,165 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 14:58:02,165 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 14:58:02,165 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 14:58:02,166 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 4 163) no Hoare annotation was computed. [2020-09-24 14:58:02,166 INFO L268 CegarLoopResult]: For program point L118-1(lines 39 158) no Hoare annotation was computed. [2020-09-24 14:58:02,166 INFO L268 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-09-24 14:58:02,166 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-24 14:58:02,166 INFO L268 CegarLoopResult]: For program point L135(line 135) no Hoare annotation was computed. [2020-09-24 14:58:02,166 INFO L268 CegarLoopResult]: For program point L102-1(lines 39 158) no Hoare annotation was computed. [2020-09-24 14:58:02,166 INFO L268 CegarLoopResult]: For program point L119(line 119) no Hoare annotation was computed. [2020-09-24 14:58:02,167 INFO L268 CegarLoopResult]: For program point L86-1(lines 39 158) no Hoare annotation was computed. [2020-09-24 14:58:02,167 INFO L268 CegarLoopResult]: For program point L103(line 103) no Hoare annotation was computed. [2020-09-24 14:58:02,167 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-09-24 14:58:02,167 INFO L268 CegarLoopResult]: For program point L70-1(lines 39 158) no Hoare annotation was computed. [2020-09-24 14:58:02,167 INFO L268 CegarLoopResult]: For program point L120(line 120) no Hoare annotation was computed. [2020-09-24 14:58:02,167 INFO L271 CegarLoopResult]: At program point L153-1(lines 39 158) the Hoare annotation is: true [2020-09-24 14:58:02,167 INFO L268 CegarLoopResult]: For program point L87(line 87) no Hoare annotation was computed. [2020-09-24 14:58:02,167 INFO L268 CegarLoopResult]: For program point L54(line 54) no Hoare annotation was computed. [2020-09-24 14:58:02,168 INFO L268 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-09-24 14:58:02,168 INFO L268 CegarLoopResult]: For program point L21-1(line 21) no Hoare annotation was computed. [2020-09-24 14:58:02,168 INFO L268 CegarLoopResult]: For program point L21-2(line 21) no Hoare annotation was computed. [2020-09-24 14:58:02,168 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 4 163) no Hoare annotation was computed. [2020-09-24 14:58:02,168 INFO L268 CegarLoopResult]: For program point L71(line 71) no Hoare annotation was computed. [2020-09-24 14:58:02,168 INFO L268 CegarLoopResult]: For program point L154(line 154) no Hoare annotation was computed. [2020-09-24 14:58:02,168 INFO L264 CegarLoopResult]: At program point L154-1(lines 5 163) the Hoare annotation is: false [2020-09-24 14:58:02,169 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-24 14:58:02,169 INFO L268 CegarLoopResult]: For program point L138-1(lines 39 158) no Hoare annotation was computed. [2020-09-24 14:58:02,169 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-09-24 14:58:02,169 INFO L268 CegarLoopResult]: For program point L6-1(line 6) no Hoare annotation was computed. [2020-09-24 14:58:02,169 INFO L268 CegarLoopResult]: For program point L155(line 155) no Hoare annotation was computed. [2020-09-24 14:58:02,169 INFO L268 CegarLoopResult]: For program point L56(line 56) no Hoare annotation was computed. [2020-09-24 14:58:02,169 INFO L268 CegarLoopResult]: For program point L139(line 139) no Hoare annotation was computed. [2020-09-24 14:58:02,170 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-09-24 14:58:02,170 INFO L268 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-09-24 14:58:02,170 INFO L268 CegarLoopResult]: For program point L40-1(line 40) no Hoare annotation was computed. [2020-09-24 14:58:02,170 INFO L268 CegarLoopResult]: For program point L40-2(line 40) no Hoare annotation was computed. [2020-09-24 14:58:02,170 INFO L268 CegarLoopResult]: For program point L123-1(lines 39 158) no Hoare annotation was computed. [2020-09-24 14:58:02,171 INFO L268 CegarLoopResult]: For program point L90-1(lines 39 158) no Hoare annotation was computed. [2020-09-24 14:58:02,171 INFO L268 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-09-24 14:58:02,171 INFO L268 CegarLoopResult]: For program point L24-1(line 24) no Hoare annotation was computed. [2020-09-24 14:58:02,171 INFO L268 CegarLoopResult]: For program point L24-2(line 24) no Hoare annotation was computed. [2020-09-24 14:58:02,171 INFO L268 CegarLoopResult]: For program point L140(line 140) no Hoare annotation was computed. [2020-09-24 14:58:02,171 INFO L268 CegarLoopResult]: For program point L41(lines 41 43) no Hoare annotation was computed. [2020-09-24 14:58:02,172 INFO L268 CegarLoopResult]: For program point L74-1(lines 39 158) no Hoare annotation was computed. [2020-09-24 14:58:02,172 INFO L268 CegarLoopResult]: For program point L124(line 124) no Hoare annotation was computed. [2020-09-24 14:58:02,172 INFO L268 CegarLoopResult]: For program point L91(line 91) no Hoare annotation was computed. [2020-09-24 14:58:02,172 INFO L268 CegarLoopResult]: For program point L58(line 58) no Hoare annotation was computed. [2020-09-24 14:58:02,172 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-24 14:58:02,172 INFO L268 CegarLoopResult]: For program point L75(line 75) no Hoare annotation was computed. [2020-09-24 14:58:02,173 INFO L268 CegarLoopResult]: For program point L108-1(lines 39 158) no Hoare annotation was computed. [2020-09-24 14:58:02,173 INFO L268 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-09-24 14:58:02,173 INFO L268 CegarLoopResult]: For program point L9-1(line 9) no Hoare annotation was computed. [2020-09-24 14:58:02,173 INFO L268 CegarLoopResult]: For program point L9-2(line 9) no Hoare annotation was computed. [2020-09-24 14:58:02,173 INFO L268 CegarLoopResult]: For program point L125(line 125) no Hoare annotation was computed. [2020-09-24 14:58:02,173 INFO L268 CegarLoopResult]: For program point L109(line 109) no Hoare annotation was computed. [2020-09-24 14:58:02,173 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-09-24 14:58:02,174 INFO L271 CegarLoopResult]: At program point L159(lines 5 163) the Hoare annotation is: true [2020-09-24 14:58:02,174 INFO L268 CegarLoopResult]: For program point L60(line 60) no Hoare annotation was computed. [2020-09-24 14:58:02,174 INFO L268 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-09-24 14:58:02,174 INFO L268 CegarLoopResult]: For program point L27-1(line 27) no Hoare annotation was computed. [2020-09-24 14:58:02,174 INFO L268 CegarLoopResult]: For program point L27-2(line 27) no Hoare annotation was computed. [2020-09-24 14:58:02,174 INFO L268 CegarLoopResult]: For program point L110(line 110) no Hoare annotation was computed. [2020-09-24 14:58:02,174 INFO L268 CegarLoopResult]: For program point L143-1(lines 39 158) no Hoare annotation was computed. [2020-09-24 14:58:02,175 INFO L268 CegarLoopResult]: For program point L44(line 44) no Hoare annotation was computed. [2020-09-24 14:58:02,175 INFO L268 CegarLoopResult]: For program point L94-1(lines 39 158) no Hoare annotation was computed. [2020-09-24 14:58:02,175 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-09-24 14:58:02,175 INFO L268 CegarLoopResult]: For program point L144(line 144) no Hoare annotation was computed. [2020-09-24 14:58:02,175 INFO L268 CegarLoopResult]: For program point L78-1(lines 39 158) no Hoare annotation was computed. [2020-09-24 14:58:02,175 INFO L268 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-09-24 14:58:02,176 INFO L268 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-09-24 14:58:02,176 INFO L268 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-09-24 14:58:02,176 INFO L268 CegarLoopResult]: For program point L95(line 95) no Hoare annotation was computed. [2020-09-24 14:58:02,176 INFO L268 CegarLoopResult]: For program point L128-1(lines 39 158) no Hoare annotation was computed. [2020-09-24 14:58:02,176 INFO L268 CegarLoopResult]: For program point L62(line 62) no Hoare annotation was computed. [2020-09-24 14:58:02,176 INFO L268 CegarLoopResult]: For program point L145(line 145) no Hoare annotation was computed. [2020-09-24 14:58:02,177 INFO L268 CegarLoopResult]: For program point L79(line 79) no Hoare annotation was computed. [2020-09-24 14:58:02,177 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-09-24 14:58:02,177 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-09-24 14:58:02,177 INFO L268 CegarLoopResult]: For program point L162(line 162) no Hoare annotation was computed. [2020-09-24 14:58:02,177 INFO L268 CegarLoopResult]: For program point L129(line 129) no Hoare annotation was computed. [2020-09-24 14:58:02,178 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 161) no Hoare annotation was computed. [2020-09-24 14:58:02,178 INFO L268 CegarLoopResult]: For program point L30(line 30) no Hoare annotation was computed. [2020-09-24 14:58:02,178 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 4 163) the Hoare annotation is: true [2020-09-24 14:58:02,178 INFO L268 CegarLoopResult]: For program point L30-1(line 30) no Hoare annotation was computed. [2020-09-24 14:58:02,178 INFO L268 CegarLoopResult]: For program point L30-2(line 30) no Hoare annotation was computed. [2020-09-24 14:58:02,178 INFO L268 CegarLoopResult]: For program point L113-1(lines 39 158) no Hoare annotation was computed. [2020-09-24 14:58:02,179 INFO L268 CegarLoopResult]: For program point L130(line 130) no Hoare annotation was computed. [2020-09-24 14:58:02,179 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-09-24 14:58:02,179 INFO L268 CegarLoopResult]: For program point L114(line 114) no Hoare annotation was computed. [2020-09-24 14:58:02,179 INFO L268 CegarLoopResult]: For program point L48(line 48) no Hoare annotation was computed. [2020-09-24 14:58:02,179 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-24 14:58:02,179 INFO L268 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-09-24 14:58:02,179 INFO L268 CegarLoopResult]: For program point L15-2(line 15) no Hoare annotation was computed. [2020-09-24 14:58:02,180 INFO L268 CegarLoopResult]: For program point L98-1(lines 39 158) no Hoare annotation was computed. [2020-09-24 14:58:02,180 INFO L268 CegarLoopResult]: For program point L115(line 115) no Hoare annotation was computed. [2020-09-24 14:58:02,180 INFO L268 CegarLoopResult]: For program point L148-1(lines 39 158) no Hoare annotation was computed. [2020-09-24 14:58:02,180 INFO L268 CegarLoopResult]: For program point L82-1(lines 39 158) no Hoare annotation was computed. [2020-09-24 14:58:02,180 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-24 14:58:02,180 INFO L268 CegarLoopResult]: For program point L99(line 99) no Hoare annotation was computed. [2020-09-24 14:58:02,181 INFO L268 CegarLoopResult]: For program point L66(lines 66 68) no Hoare annotation was computed. [2020-09-24 14:58:02,181 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-09-24 14:58:02,181 INFO L268 CegarLoopResult]: For program point L33-1(line 33) no Hoare annotation was computed. [2020-09-24 14:58:02,181 INFO L268 CegarLoopResult]: For program point L66-2(lines 39 158) no Hoare annotation was computed. [2020-09-24 14:58:02,181 INFO L268 CegarLoopResult]: For program point L33-2(line 33) no Hoare annotation was computed. [2020-09-24 14:58:02,181 INFO L268 CegarLoopResult]: For program point L149(line 149) no Hoare annotation was computed. [2020-09-24 14:58:02,181 INFO L268 CegarLoopResult]: For program point L83(line 83) no Hoare annotation was computed. [2020-09-24 14:58:02,182 INFO L268 CegarLoopResult]: For program point L50(line 50) no Hoare annotation was computed. [2020-09-24 14:58:02,182 INFO L268 CegarLoopResult]: For program point L133-1(lines 39 158) no Hoare annotation was computed. [2020-09-24 14:58:02,182 INFO L268 CegarLoopResult]: For program point L67(line 67) no Hoare annotation was computed. [2020-09-24 14:58:02,182 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-09-24 14:58:02,182 INFO L268 CegarLoopResult]: For program point L150(line 150) no Hoare annotation was computed. [2020-09-24 14:58:02,182 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-24 14:58:02,183 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-09-24 14:58:02,183 INFO L268 CegarLoopResult]: For program point L18-2(line 18) no Hoare annotation was computed. [2020-09-24 14:58:02,183 INFO L268 CegarLoopResult]: For program point L134(line 134) no Hoare annotation was computed. [2020-09-24 14:58:02,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 02:58:02 BoogieIcfgContainer [2020-09-24 14:58:02,198 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 14:58:02,202 INFO L168 Benchmark]: Toolchain (without parser) took 9559.47 ms. Allocated memory was 147.3 MB in the beginning and 698.9 MB in the end (delta: 551.6 MB). Free memory was 103.5 MB in the beginning and 277.7 MB in the end (delta: -174.3 MB). Peak memory consumption was 377.3 MB. Max. memory is 7.1 GB. [2020-09-24 14:58:02,202 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 147.3 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 14:58:02,203 INFO L168 Benchmark]: CACSL2BoogieTranslator took 357.48 ms. Allocated memory is still 147.3 MB. Free memory was 102.8 MB in the beginning and 92.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2020-09-24 14:58:02,204 INFO L168 Benchmark]: Boogie Preprocessor took 135.67 ms. Allocated memory was 147.3 MB in the beginning and 202.9 MB in the end (delta: 55.6 MB). Free memory was 92.1 MB in the beginning and 180.2 MB in the end (delta: -88.1 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-09-24 14:58:02,204 INFO L168 Benchmark]: RCFGBuilder took 575.80 ms. Allocated memory is still 202.9 MB. Free memory was 180.2 MB in the beginning and 155.5 MB in the end (delta: 24.8 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. [2020-09-24 14:58:02,205 INFO L168 Benchmark]: TraceAbstraction took 8476.12 ms. Allocated memory was 202.9 MB in the beginning and 698.9 MB in the end (delta: 496.0 MB). Free memory was 154.8 MB in the beginning and 277.7 MB in the end (delta: -122.9 MB). Peak memory consumption was 373.0 MB. Max. memory is 7.1 GB. [2020-09-24 14:58:02,208 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 147.3 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 357.48 ms. Allocated memory is still 147.3 MB. Free memory was 102.8 MB in the beginning and 92.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 135.67 ms. Allocated memory was 147.3 MB in the beginning and 202.9 MB in the end (delta: 55.6 MB). Free memory was 92.1 MB in the beginning and 180.2 MB in the end (delta: -88.1 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 575.80 ms. Allocated memory is still 202.9 MB. Free memory was 180.2 MB in the beginning and 155.5 MB in the end (delta: 24.8 MB). Peak memory consumption was 24.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 8476.12 ms. Allocated memory was 202.9 MB in the beginning and 698.9 MB in the end (delta: 496.0 MB). Free memory was 154.8 MB in the beginning and 277.7 MB in the end (delta: -122.9 MB). Peak memory consumption was 373.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 161]: 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: 39]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 118 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.3s, OverallIterations: 20, TraceHistogramMax: 1, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3610 SDtfs, 1318 SDslu, 2579 SDs, 0 SdLazy, 99 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 100 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26415occurred in iteration=17, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 3.9s AutomataMinimizationTime, 20 MinimizatonAttempts, 10599 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 1033 NumberOfFragments, 7 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 1560 NumberOfCodeBlocks, 1560 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 1540 ConstructedInterpolants, 0 QuantifiedInterpolants, 151100 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 20 InterpolantComputations, 20 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...