/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.assert.codeblocks.term.scoring.heuristic BIGGEST_EQUIVALENCE_CLASS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 --traceabstraction.trace.refinement.strategy CAMEL_SMT_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/locks/test_locks_9.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 05:45:58,679 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 05:45:58,682 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 05:45:58,697 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 05:45:58,697 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 05:45:58,698 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 05:45:58,700 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 05:45:58,701 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 05:45:58,703 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 05:45:58,704 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 05:45:58,705 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 05:45:58,706 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 05:45:58,706 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 05:45:58,707 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 05:45:58,708 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 05:45:58,709 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 05:45:58,710 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 05:45:58,711 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 05:45:58,713 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 05:45:58,714 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 05:45:58,716 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 05:45:58,717 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 05:45:58,718 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 05:45:58,718 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 05:45:58,721 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 05:45:58,728 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 05:45:58,729 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 05:45:58,729 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 05:45:58,730 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 05:45:58,744 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 05:45:58,744 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 05:45:58,746 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 05:45:58,746 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 05:45:58,746 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 05:45:58,746 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 05:45:58,746 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 05:45:58,747 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 05:45:58,747 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 05:45:58,747 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 05:45:58,747 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 05:45:58,747 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 05:45:58,748 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 05:45:58,748 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 05:45:58,748 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 05:45:58,748 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 05:45:58,748 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 05:45:58,749 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 05:45:58,749 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 05:45:58,749 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 05:45:58,749 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 05:45:58,749 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 05:45:58,750 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 05:45:58,750 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 05:45:58,750 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 05:45:58,750 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 05:45:58,750 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 05:45:58,751 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 05:45:58,751 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 05:45:58,751 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> BIGGEST_EQUIVALENCE_CLASS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-20 05:45:59,044 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 05:45:59,063 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 05:45:59,067 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 05:45:59,068 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 05:45:59,068 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 05:45:59,069 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_9.c [2020-07-20 05:45:59,134 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b843d7b18/1ffe2dac11ad43bba0ad7b159449f239/FLAG2dadfd211 [2020-07-20 05:45:59,606 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 05:45:59,607 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/locks/test_locks_9.c [2020-07-20 05:45:59,617 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b843d7b18/1ffe2dac11ad43bba0ad7b159449f239/FLAG2dadfd211 [2020-07-20 05:45:59,999 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b843d7b18/1ffe2dac11ad43bba0ad7b159449f239 [2020-07-20 05:46:00,012 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 05:46:00,016 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 05:46:00,020 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 05:46:00,021 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 05:46:00,026 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 05:46:00,027 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 05:46:00" (1/1) ... [2020-07-20 05:46:00,030 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19eb74fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:46:00, skipping insertion in model container [2020-07-20 05:46:00,030 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 05:46:00" (1/1) ... [2020-07-20 05:46:00,040 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 05:46:00,077 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 05:46:00,310 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 05:46:00,317 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 05:46:00,341 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 05:46:00,354 INFO L208 MainTranslator]: Completed translation [2020-07-20 05:46:00,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:46:00 WrapperNode [2020-07-20 05:46:00,355 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 05:46:00,356 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 05:46:00,356 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 05:46:00,356 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 05:46:00,465 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:46:00" (1/1) ... [2020-07-20 05:46:00,466 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:46:00" (1/1) ... [2020-07-20 05:46:00,472 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:46:00" (1/1) ... [2020-07-20 05:46:00,472 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:46:00" (1/1) ... [2020-07-20 05:46:00,477 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:46:00" (1/1) ... [2020-07-20 05:46:00,485 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:46:00" (1/1) ... [2020-07-20 05:46:00,486 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:46:00" (1/1) ... [2020-07-20 05:46:00,489 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 05:46:00,489 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 05:46:00,489 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 05:46:00,489 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 05:46:00,493 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:46:00" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-07-20 05:46:00,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 05:46:00,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 05:46:00,560 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 05:46:00,561 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 05:46:00,561 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 05:46:00,561 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 05:46:00,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 05:46:00,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 05:46:00,866 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 05:46:00,866 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 05:46:00,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 05:46:00 BoogieIcfgContainer [2020-07-20 05:46:00,872 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 05:46:00,875 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 05:46:00,875 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 05:46:00,882 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 05:46:00,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 05:46:00" (1/3) ... [2020-07-20 05:46:00,884 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c62bdb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 05:46:00, skipping insertion in model container [2020-07-20 05:46:00,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:46:00" (2/3) ... [2020-07-20 05:46:00,884 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c62bdb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 05:46:00, skipping insertion in model container [2020-07-20 05:46:00,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 05:46:00" (3/3) ... [2020-07-20 05:46:00,886 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_9.c [2020-07-20 05:46:00,900 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 05:46:00,911 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 05:46:00,930 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 05:46:00,964 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 05:46:00,964 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 05:46:00,964 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 05:46:00,964 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 05:46:00,964 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 05:46:00,965 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 05:46:00,965 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 05:46:00,965 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 05:46:00,988 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-07-20 05:46:00,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-20 05:46:00,995 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:46:00,996 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:46:00,996 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:46:01,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:46:01,003 INFO L82 PathProgramCache]: Analyzing trace with hash 691982780, now seen corresponding path program 1 times [2020-07-20 05:46:01,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:46:01,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766919309] [2020-07-20 05:46:01,014 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@77f90890 [2020-07-20 05:46:01,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:01,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:01,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 05:46:01,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766919309] [2020-07-20 05:46:01,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 05:46:01,261 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 05:46:01,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511207448] [2020-07-20 05:46:01,267 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 05:46:01,268 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:46:01,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 05:46:01,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 05:46:01,286 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 3 states. [2020-07-20 05:46:01,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:46:01,359 INFO L93 Difference]: Finished difference Result 81 states and 138 transitions. [2020-07-20 05:46:01,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 05:46:01,362 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-07-20 05:46:01,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:46:01,373 INFO L225 Difference]: With dead ends: 81 [2020-07-20 05:46:01,373 INFO L226 Difference]: Without dead ends: 66 [2020-07-20 05:46:01,377 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 [2020-07-20 05:46:01,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-07-20 05:46:01,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 46. [2020-07-20 05:46:01,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-07-20 05:46:01,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 81 transitions. [2020-07-20 05:46:01,423 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 81 transitions. Word has length 19 [2020-07-20 05:46:01,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:46:01,423 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 81 transitions. [2020-07-20 05:46:01,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 05:46:01,424 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 81 transitions. [2020-07-20 05:46:01,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-20 05:46:01,425 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:46:01,425 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:46:01,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 05:46:01,426 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:46:01,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:46:01,427 INFO L82 PathProgramCache]: Analyzing trace with hash 950148218, now seen corresponding path program 1 times [2020-07-20 05:46:01,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:46:01,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307583299] [2020-07-20 05:46:01,428 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@77f90890 [2020-07-20 05:46:01,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:01,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:01,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 05:46:01,503 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307583299] [2020-07-20 05:46:01,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 05:46:01,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 05:46:01,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583719395] [2020-07-20 05:46:01,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 05:46:01,506 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:46:01,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 05:46:01,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 05:46:01,508 INFO L87 Difference]: Start difference. First operand 46 states and 81 transitions. Second operand 3 states. [2020-07-20 05:46:01,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:46:01,543 INFO L93 Difference]: Finished difference Result 107 states and 192 transitions. [2020-07-20 05:46:01,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 05:46:01,543 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-07-20 05:46:01,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:46:01,545 INFO L225 Difference]: With dead ends: 107 [2020-07-20 05:46:01,546 INFO L226 Difference]: Without dead ends: 66 [2020-07-20 05:46:01,547 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 [2020-07-20 05:46:01,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-07-20 05:46:01,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2020-07-20 05:46:01,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-07-20 05:46:01,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 113 transitions. [2020-07-20 05:46:01,559 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 113 transitions. Word has length 19 [2020-07-20 05:46:01,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:46:01,560 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 113 transitions. [2020-07-20 05:46:01,560 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 05:46:01,560 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 113 transitions. [2020-07-20 05:46:01,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-20 05:46:01,561 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:46:01,561 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:46:01,562 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-20 05:46:01,562 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:46:01,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:46:01,563 INFO L82 PathProgramCache]: Analyzing trace with hash -23156596, now seen corresponding path program 1 times [2020-07-20 05:46:01,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:46:01,563 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776451549] [2020-07-20 05:46:01,564 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@77f90890 [2020-07-20 05:46:01,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:01,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:01,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 05:46:01,628 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776451549] [2020-07-20 05:46:01,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 05:46:01,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 05:46:01,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526558964] [2020-07-20 05:46:01,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 05:46:01,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:46:01,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 05:46:01,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 05:46:01,631 INFO L87 Difference]: Start difference. First operand 64 states and 113 transitions. Second operand 3 states. [2020-07-20 05:46:01,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:46:01,668 INFO L93 Difference]: Finished difference Result 99 states and 171 transitions. [2020-07-20 05:46:01,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 05:46:01,672 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-07-20 05:46:01,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:46:01,673 INFO L225 Difference]: With dead ends: 99 [2020-07-20 05:46:01,674 INFO L226 Difference]: Without dead ends: 69 [2020-07-20 05:46:01,675 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 [2020-07-20 05:46:01,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-07-20 05:46:01,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 67. [2020-07-20 05:46:01,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-07-20 05:46:01,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 115 transitions. [2020-07-20 05:46:01,688 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 115 transitions. Word has length 20 [2020-07-20 05:46:01,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:46:01,689 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 115 transitions. [2020-07-20 05:46:01,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 05:46:01,689 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 115 transitions. [2020-07-20 05:46:01,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-20 05:46:01,690 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:46:01,690 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] [2020-07-20 05:46:01,691 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-20 05:46:01,691 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:46:01,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:46:01,691 INFO L82 PathProgramCache]: Analyzing trace with hash -609962610, now seen corresponding path program 1 times [2020-07-20 05:46:01,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:46:01,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027872539] [2020-07-20 05:46:01,692 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@77f90890 [2020-07-20 05:46:01,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:01,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:01,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 05:46:01,741 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027872539] [2020-07-20 05:46:01,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 05:46:01,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 05:46:01,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497331669] [2020-07-20 05:46:01,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 05:46:01,743 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:46:01,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 05:46:01,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 05:46:01,744 INFO L87 Difference]: Start difference. First operand 67 states and 115 transitions. Second operand 3 states. [2020-07-20 05:46:01,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:46:01,765 INFO L93 Difference]: Finished difference Result 124 states and 216 transitions. [2020-07-20 05:46:01,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 05:46:01,765 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-07-20 05:46:01,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:46:01,767 INFO L225 Difference]: With dead ends: 124 [2020-07-20 05:46:01,767 INFO L226 Difference]: Without dead ends: 122 [2020-07-20 05:46:01,768 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 [2020-07-20 05:46:01,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-07-20 05:46:01,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 88. [2020-07-20 05:46:01,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-07-20 05:46:01,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 152 transitions. [2020-07-20 05:46:01,780 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 152 transitions. Word has length 20 [2020-07-20 05:46:01,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:46:01,780 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 152 transitions. [2020-07-20 05:46:01,781 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 05:46:01,781 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 152 transitions. [2020-07-20 05:46:01,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-20 05:46:01,782 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:46:01,782 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:46:01,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-20 05:46:01,783 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:46:01,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:46:01,783 INFO L82 PathProgramCache]: Analyzing trace with hash -351797172, now seen corresponding path program 1 times [2020-07-20 05:46:01,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:46:01,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475657592] [2020-07-20 05:46:01,784 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@77f90890 [2020-07-20 05:46:01,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:01,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:01,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 05:46:01,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475657592] [2020-07-20 05:46:01,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 05:46:01,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 05:46:01,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462997642] [2020-07-20 05:46:01,827 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 05:46:01,827 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:46:01,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 05:46:01,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 05:46:01,828 INFO L87 Difference]: Start difference. First operand 88 states and 152 transitions. Second operand 3 states. [2020-07-20 05:46:01,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:46:01,859 INFO L93 Difference]: Finished difference Result 204 states and 358 transitions. [2020-07-20 05:46:01,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 05:46:01,859 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-07-20 05:46:01,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:46:01,861 INFO L225 Difference]: With dead ends: 204 [2020-07-20 05:46:01,861 INFO L226 Difference]: Without dead ends: 124 [2020-07-20 05:46:01,863 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 [2020-07-20 05:46:01,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-07-20 05:46:01,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 122. [2020-07-20 05:46:01,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-07-20 05:46:01,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 210 transitions. [2020-07-20 05:46:01,875 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 210 transitions. Word has length 20 [2020-07-20 05:46:01,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:46:01,876 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 210 transitions. [2020-07-20 05:46:01,876 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 05:46:01,876 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 210 transitions. [2020-07-20 05:46:01,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-20 05:46:01,877 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:46:01,878 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:46:01,878 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-20 05:46:01,878 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:46:01,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:46:01,879 INFO L82 PathProgramCache]: Analyzing trace with hash -1728757681, now seen corresponding path program 1 times [2020-07-20 05:46:01,879 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:46:01,879 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666696090] [2020-07-20 05:46:01,880 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@77f90890 [2020-07-20 05:46:01,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:01,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:01,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 05:46:01,943 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666696090] [2020-07-20 05:46:01,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 05:46:01,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 05:46:01,944 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447724108] [2020-07-20 05:46:01,944 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 05:46:01,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:46:01,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 05:46:01,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 05:46:01,945 INFO L87 Difference]: Start difference. First operand 122 states and 210 transitions. Second operand 3 states. [2020-07-20 05:46:01,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:46:01,967 INFO L93 Difference]: Finished difference Result 183 states and 313 transitions. [2020-07-20 05:46:01,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 05:46:01,967 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-07-20 05:46:01,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:46:01,969 INFO L225 Difference]: With dead ends: 183 [2020-07-20 05:46:01,969 INFO L226 Difference]: Without dead ends: 126 [2020-07-20 05:46:01,970 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 [2020-07-20 05:46:01,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-07-20 05:46:01,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 124. [2020-07-20 05:46:01,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-07-20 05:46:01,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 210 transitions. [2020-07-20 05:46:01,983 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 210 transitions. Word has length 21 [2020-07-20 05:46:01,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:46:01,983 INFO L479 AbstractCegarLoop]: Abstraction has 124 states and 210 transitions. [2020-07-20 05:46:01,983 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 05:46:01,984 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 210 transitions. [2020-07-20 05:46:01,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-20 05:46:01,985 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:46:01,985 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:46:01,985 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-20 05:46:01,986 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:46:01,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:46:01,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1979403601, now seen corresponding path program 1 times [2020-07-20 05:46:01,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:46:01,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562242377] [2020-07-20 05:46:01,987 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@77f90890 [2020-07-20 05:46:01,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:02,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:02,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 05:46:02,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562242377] [2020-07-20 05:46:02,024 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 05:46:02,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 05:46:02,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871943627] [2020-07-20 05:46:02,025 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 05:46:02,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:46:02,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 05:46:02,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 05:46:02,027 INFO L87 Difference]: Start difference. First operand 124 states and 210 transitions. Second operand 3 states. [2020-07-20 05:46:02,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:46:02,047 INFO L93 Difference]: Finished difference Result 228 states and 392 transitions. [2020-07-20 05:46:02,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 05:46:02,048 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-07-20 05:46:02,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:46:02,050 INFO L225 Difference]: With dead ends: 228 [2020-07-20 05:46:02,050 INFO L226 Difference]: Without dead ends: 226 [2020-07-20 05:46:02,051 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 [2020-07-20 05:46:02,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-07-20 05:46:02,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 168. [2020-07-20 05:46:02,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-07-20 05:46:02,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 282 transitions. [2020-07-20 05:46:02,065 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 282 transitions. Word has length 21 [2020-07-20 05:46:02,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:46:02,079 INFO L479 AbstractCegarLoop]: Abstraction has 168 states and 282 transitions. [2020-07-20 05:46:02,079 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 05:46:02,080 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 282 transitions. [2020-07-20 05:46:02,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-20 05:46:02,081 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:46:02,081 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:46:02,082 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-20 05:46:02,082 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:46:02,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:46:02,083 INFO L82 PathProgramCache]: Analyzing trace with hash -2057398257, now seen corresponding path program 1 times [2020-07-20 05:46:02,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:46:02,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457382077] [2020-07-20 05:46:02,083 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@77f90890 [2020-07-20 05:46:02,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:02,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:02,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 05:46:02,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457382077] [2020-07-20 05:46:02,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 05:46:02,155 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 05:46:02,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242560334] [2020-07-20 05:46:02,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 05:46:02,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:46:02,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 05:46:02,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 05:46:02,157 INFO L87 Difference]: Start difference. First operand 168 states and 282 transitions. Second operand 3 states. [2020-07-20 05:46:02,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:46:02,197 INFO L93 Difference]: Finished difference Result 392 states and 664 transitions. [2020-07-20 05:46:02,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 05:46:02,197 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-07-20 05:46:02,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:46:02,199 INFO L225 Difference]: With dead ends: 392 [2020-07-20 05:46:02,199 INFO L226 Difference]: Without dead ends: 234 [2020-07-20 05:46:02,201 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 [2020-07-20 05:46:02,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-07-20 05:46:02,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 232. [2020-07-20 05:46:02,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-07-20 05:46:02,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 386 transitions. [2020-07-20 05:46:02,214 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 386 transitions. Word has length 21 [2020-07-20 05:46:02,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:46:02,215 INFO L479 AbstractCegarLoop]: Abstraction has 232 states and 386 transitions. [2020-07-20 05:46:02,215 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 05:46:02,215 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 386 transitions. [2020-07-20 05:46:02,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-20 05:46:02,217 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:46:02,217 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] [2020-07-20 05:46:02,217 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-20 05:46:02,217 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:46:02,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:46:02,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1232183873, now seen corresponding path program 1 times [2020-07-20 05:46:02,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:46:02,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444529164] [2020-07-20 05:46:02,218 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@77f90890 [2020-07-20 05:46:02,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:02,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:02,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 05:46:02,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444529164] [2020-07-20 05:46:02,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 05:46:02,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 05:46:02,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795357821] [2020-07-20 05:46:02,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 05:46:02,246 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:46:02,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 05:46:02,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 05:46:02,247 INFO L87 Difference]: Start difference. First operand 232 states and 386 transitions. Second operand 3 states. [2020-07-20 05:46:02,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:46:02,265 INFO L93 Difference]: Finished difference Result 348 states and 576 transitions. [2020-07-20 05:46:02,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 05:46:02,265 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-07-20 05:46:02,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:46:02,267 INFO L225 Difference]: With dead ends: 348 [2020-07-20 05:46:02,267 INFO L226 Difference]: Without dead ends: 238 [2020-07-20 05:46:02,268 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 [2020-07-20 05:46:02,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-07-20 05:46:02,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 236. [2020-07-20 05:46:02,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-07-20 05:46:02,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 386 transitions. [2020-07-20 05:46:02,281 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 386 transitions. Word has length 22 [2020-07-20 05:46:02,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:46:02,281 INFO L479 AbstractCegarLoop]: Abstraction has 236 states and 386 transitions. [2020-07-20 05:46:02,281 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 05:46:02,282 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 386 transitions. [2020-07-20 05:46:02,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-20 05:46:02,283 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:46:02,284 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] [2020-07-20 05:46:02,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-20 05:46:02,284 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:46:02,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:46:02,284 INFO L82 PathProgramCache]: Analyzing trace with hash 645377859, now seen corresponding path program 1 times [2020-07-20 05:46:02,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:46:02,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694861715] [2020-07-20 05:46:02,285 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@77f90890 [2020-07-20 05:46:02,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:02,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:02,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 05:46:02,318 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694861715] [2020-07-20 05:46:02,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 05:46:02,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 05:46:02,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175615380] [2020-07-20 05:46:02,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 05:46:02,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:46:02,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 05:46:02,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 05:46:02,326 INFO L87 Difference]: Start difference. First operand 236 states and 386 transitions. Second operand 3 states. [2020-07-20 05:46:02,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:46:02,354 INFO L93 Difference]: Finished difference Result 428 states and 712 transitions. [2020-07-20 05:46:02,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 05:46:02,355 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-07-20 05:46:02,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:46:02,358 INFO L225 Difference]: With dead ends: 428 [2020-07-20 05:46:02,358 INFO L226 Difference]: Without dead ends: 426 [2020-07-20 05:46:02,359 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 [2020-07-20 05:46:02,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2020-07-20 05:46:02,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 328. [2020-07-20 05:46:02,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 328 states. [2020-07-20 05:46:02,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 526 transitions. [2020-07-20 05:46:02,372 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 526 transitions. Word has length 22 [2020-07-20 05:46:02,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:46:02,372 INFO L479 AbstractCegarLoop]: Abstraction has 328 states and 526 transitions. [2020-07-20 05:46:02,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 05:46:02,372 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 526 transitions. [2020-07-20 05:46:02,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-20 05:46:02,374 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:46:02,374 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] [2020-07-20 05:46:02,374 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-20 05:46:02,374 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:46:02,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:46:02,375 INFO L82 PathProgramCache]: Analyzing trace with hash 903543297, now seen corresponding path program 1 times [2020-07-20 05:46:02,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:46:02,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648381488] [2020-07-20 05:46:02,376 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@77f90890 [2020-07-20 05:46:02,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:02,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:02,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 05:46:02,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648381488] [2020-07-20 05:46:02,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 05:46:02,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 05:46:02,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497293386] [2020-07-20 05:46:02,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 05:46:02,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:46:02,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 05:46:02,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 05:46:02,405 INFO L87 Difference]: Start difference. First operand 328 states and 526 transitions. Second operand 3 states. [2020-07-20 05:46:02,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:46:02,431 INFO L93 Difference]: Finished difference Result 764 states and 1232 transitions. [2020-07-20 05:46:02,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 05:46:02,432 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-07-20 05:46:02,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:46:02,435 INFO L225 Difference]: With dead ends: 764 [2020-07-20 05:46:02,435 INFO L226 Difference]: Without dead ends: 450 [2020-07-20 05:46:02,436 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 [2020-07-20 05:46:02,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2020-07-20 05:46:02,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 448. [2020-07-20 05:46:02,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 448 states. [2020-07-20 05:46:02,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 710 transitions. [2020-07-20 05:46:02,453 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 710 transitions. Word has length 22 [2020-07-20 05:46:02,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:46:02,454 INFO L479 AbstractCegarLoop]: Abstraction has 448 states and 710 transitions. [2020-07-20 05:46:02,454 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 05:46:02,454 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 710 transitions. [2020-07-20 05:46:02,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-20 05:46:02,455 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:46:02,455 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] [2020-07-20 05:46:02,456 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-07-20 05:46:02,456 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:46:02,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:46:02,456 INFO L82 PathProgramCache]: Analyzing trace with hash -1467908124, now seen corresponding path program 1 times [2020-07-20 05:46:02,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:46:02,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518289065] [2020-07-20 05:46:02,457 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@77f90890 [2020-07-20 05:46:02,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:02,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:02,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 05:46:02,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518289065] [2020-07-20 05:46:02,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 05:46:02,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 05:46:02,484 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007721192] [2020-07-20 05:46:02,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 05:46:02,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:46:02,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 05:46:02,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 05:46:02,485 INFO L87 Difference]: Start difference. First operand 448 states and 710 transitions. Second operand 3 states. [2020-07-20 05:46:02,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:46:02,505 INFO L93 Difference]: Finished difference Result 672 states and 1060 transitions. [2020-07-20 05:46:02,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 05:46:02,506 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-07-20 05:46:02,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:46:02,509 INFO L225 Difference]: With dead ends: 672 [2020-07-20 05:46:02,509 INFO L226 Difference]: Without dead ends: 458 [2020-07-20 05:46:02,510 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 [2020-07-20 05:46:02,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2020-07-20 05:46:02,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 456. [2020-07-20 05:46:02,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 456 states. [2020-07-20 05:46:02,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 710 transitions. [2020-07-20 05:46:02,524 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 710 transitions. Word has length 23 [2020-07-20 05:46:02,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:46:02,525 INFO L479 AbstractCegarLoop]: Abstraction has 456 states and 710 transitions. [2020-07-20 05:46:02,525 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 05:46:02,525 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 710 transitions. [2020-07-20 05:46:02,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-20 05:46:02,526 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:46:02,526 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] [2020-07-20 05:46:02,527 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-07-20 05:46:02,527 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:46:02,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:46:02,527 INFO L82 PathProgramCache]: Analyzing trace with hash -2054714138, now seen corresponding path program 1 times [2020-07-20 05:46:02,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:46:02,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690158617] [2020-07-20 05:46:02,528 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@77f90890 [2020-07-20 05:46:02,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:02,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:02,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 05:46:02,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690158617] [2020-07-20 05:46:02,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 05:46:02,552 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 05:46:02,552 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764783067] [2020-07-20 05:46:02,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 05:46:02,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:46:02,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 05:46:02,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 05:46:02,553 INFO L87 Difference]: Start difference. First operand 456 states and 710 transitions. Second operand 3 states. [2020-07-20 05:46:02,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:46:02,576 INFO L93 Difference]: Finished difference Result 812 states and 1288 transitions. [2020-07-20 05:46:02,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 05:46:02,577 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-07-20 05:46:02,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:46:02,582 INFO L225 Difference]: With dead ends: 812 [2020-07-20 05:46:02,582 INFO L226 Difference]: Without dead ends: 810 [2020-07-20 05:46:02,583 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 [2020-07-20 05:46:02,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 810 states. [2020-07-20 05:46:02,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 810 to 648. [2020-07-20 05:46:02,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 648 states. [2020-07-20 05:46:02,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 982 transitions. [2020-07-20 05:46:02,602 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 982 transitions. Word has length 23 [2020-07-20 05:46:02,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:46:02,602 INFO L479 AbstractCegarLoop]: Abstraction has 648 states and 982 transitions. [2020-07-20 05:46:02,602 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 05:46:02,602 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 982 transitions. [2020-07-20 05:46:02,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-20 05:46:02,604 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:46:02,604 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] [2020-07-20 05:46:02,604 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-07-20 05:46:02,605 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:46:02,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:46:02,605 INFO L82 PathProgramCache]: Analyzing trace with hash -1796548700, now seen corresponding path program 1 times [2020-07-20 05:46:02,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:46:02,606 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402907215] [2020-07-20 05:46:02,606 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@77f90890 [2020-07-20 05:46:02,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:02,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:02,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 05:46:02,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402907215] [2020-07-20 05:46:02,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 05:46:02,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 05:46:02,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323976425] [2020-07-20 05:46:02,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 05:46:02,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:46:02,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 05:46:02,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 05:46:02,639 INFO L87 Difference]: Start difference. First operand 648 states and 982 transitions. Second operand 3 states. [2020-07-20 05:46:02,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:46:02,669 INFO L93 Difference]: Finished difference Result 1500 states and 2280 transitions. [2020-07-20 05:46:02,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 05:46:02,669 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-07-20 05:46:02,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:46:02,674 INFO L225 Difference]: With dead ends: 1500 [2020-07-20 05:46:02,674 INFO L226 Difference]: Without dead ends: 874 [2020-07-20 05:46:02,676 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 [2020-07-20 05:46:02,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 874 states. [2020-07-20 05:46:02,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 874 to 872. [2020-07-20 05:46:02,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 872 states. [2020-07-20 05:46:02,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1302 transitions. [2020-07-20 05:46:02,703 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1302 transitions. Word has length 23 [2020-07-20 05:46:02,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:46:02,703 INFO L479 AbstractCegarLoop]: Abstraction has 872 states and 1302 transitions. [2020-07-20 05:46:02,703 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 05:46:02,704 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1302 transitions. [2020-07-20 05:46:02,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-20 05:46:02,705 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:46:02,705 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] [2020-07-20 05:46:02,706 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-07-20 05:46:02,706 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:46:02,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:46:02,706 INFO L82 PathProgramCache]: Analyzing trace with hash 728586230, now seen corresponding path program 1 times [2020-07-20 05:46:02,707 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:46:02,707 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224997342] [2020-07-20 05:46:02,707 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@77f90890 [2020-07-20 05:46:02,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:02,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:02,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 05:46:02,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224997342] [2020-07-20 05:46:02,730 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 05:46:02,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 05:46:02,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972622745] [2020-07-20 05:46:02,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 05:46:02,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:46:02,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 05:46:02,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 05:46:02,732 INFO L87 Difference]: Start difference. First operand 872 states and 1302 transitions. Second operand 3 states. [2020-07-20 05:46:02,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:46:02,762 INFO L93 Difference]: Finished difference Result 1308 states and 1944 transitions. [2020-07-20 05:46:02,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 05:46:02,762 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-07-20 05:46:02,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:46:02,768 INFO L225 Difference]: With dead ends: 1308 [2020-07-20 05:46:02,768 INFO L226 Difference]: Without dead ends: 890 [2020-07-20 05:46:02,770 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 [2020-07-20 05:46:02,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2020-07-20 05:46:02,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 888. [2020-07-20 05:46:02,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 888 states. [2020-07-20 05:46:02,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 888 states to 888 states and 1302 transitions. [2020-07-20 05:46:02,805 INFO L78 Accepts]: Start accepts. Automaton has 888 states and 1302 transitions. Word has length 24 [2020-07-20 05:46:02,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:46:02,805 INFO L479 AbstractCegarLoop]: Abstraction has 888 states and 1302 transitions. [2020-07-20 05:46:02,805 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 05:46:02,805 INFO L276 IsEmpty]: Start isEmpty. Operand 888 states and 1302 transitions. [2020-07-20 05:46:02,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-20 05:46:02,807 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:46:02,808 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] [2020-07-20 05:46:02,808 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-07-20 05:46:02,808 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:46:02,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:46:02,809 INFO L82 PathProgramCache]: Analyzing trace with hash 141780216, now seen corresponding path program 1 times [2020-07-20 05:46:02,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:46:02,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969041847] [2020-07-20 05:46:02,809 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@77f90890 [2020-07-20 05:46:02,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:02,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:02,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 05:46:02,833 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969041847] [2020-07-20 05:46:02,833 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 05:46:02,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 05:46:02,834 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256357224] [2020-07-20 05:46:02,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 05:46:02,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:46:02,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 05:46:02,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 05:46:02,835 INFO L87 Difference]: Start difference. First operand 888 states and 1302 transitions. Second operand 3 states. [2020-07-20 05:46:02,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:46:02,890 INFO L93 Difference]: Finished difference Result 1548 states and 2312 transitions. [2020-07-20 05:46:02,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 05:46:02,891 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-07-20 05:46:02,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:46:02,898 INFO L225 Difference]: With dead ends: 1548 [2020-07-20 05:46:02,898 INFO L226 Difference]: Without dead ends: 1546 [2020-07-20 05:46:02,899 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 [2020-07-20 05:46:02,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1546 states. [2020-07-20 05:46:02,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1546 to 1288. [2020-07-20 05:46:02,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1288 states. [2020-07-20 05:46:02,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1288 states to 1288 states and 1830 transitions. [2020-07-20 05:46:02,937 INFO L78 Accepts]: Start accepts. Automaton has 1288 states and 1830 transitions. Word has length 24 [2020-07-20 05:46:02,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:46:02,937 INFO L479 AbstractCegarLoop]: Abstraction has 1288 states and 1830 transitions. [2020-07-20 05:46:02,937 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 05:46:02,937 INFO L276 IsEmpty]: Start isEmpty. Operand 1288 states and 1830 transitions. [2020-07-20 05:46:02,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-20 05:46:02,940 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:46:02,940 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] [2020-07-20 05:46:02,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-07-20 05:46:02,941 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:46:02,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:46:02,941 INFO L82 PathProgramCache]: Analyzing trace with hash 399945654, now seen corresponding path program 1 times [2020-07-20 05:46:02,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:46:02,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830497351] [2020-07-20 05:46:02,942 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@77f90890 [2020-07-20 05:46:02,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:02,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:02,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 05:46:02,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830497351] [2020-07-20 05:46:02,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 05:46:02,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 05:46:02,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92405024] [2020-07-20 05:46:02,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 05:46:02,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:46:02,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 05:46:02,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 05:46:02,965 INFO L87 Difference]: Start difference. First operand 1288 states and 1830 transitions. Second operand 3 states. [2020-07-20 05:46:03,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:46:03,010 INFO L93 Difference]: Finished difference Result 2956 states and 4200 transitions. [2020-07-20 05:46:03,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 05:46:03,011 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-07-20 05:46:03,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:46:03,019 INFO L225 Difference]: With dead ends: 2956 [2020-07-20 05:46:03,020 INFO L226 Difference]: Without dead ends: 1706 [2020-07-20 05:46:03,023 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 [2020-07-20 05:46:03,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1706 states. [2020-07-20 05:46:03,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1706 to 1704. [2020-07-20 05:46:03,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1704 states. [2020-07-20 05:46:03,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1704 states to 1704 states and 2374 transitions. [2020-07-20 05:46:03,076 INFO L78 Accepts]: Start accepts. Automaton has 1704 states and 2374 transitions. Word has length 24 [2020-07-20 05:46:03,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:46:03,076 INFO L479 AbstractCegarLoop]: Abstraction has 1704 states and 2374 transitions. [2020-07-20 05:46:03,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 05:46:03,076 INFO L276 IsEmpty]: Start isEmpty. Operand 1704 states and 2374 transitions. [2020-07-20 05:46:03,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-20 05:46:03,079 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:46:03,079 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] [2020-07-20 05:46:03,080 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-07-20 05:46:03,080 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:46:03,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:46:03,080 INFO L82 PathProgramCache]: Analyzing trace with hash 100434809, now seen corresponding path program 1 times [2020-07-20 05:46:03,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:46:03,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1948555377] [2020-07-20 05:46:03,081 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@77f90890 [2020-07-20 05:46:03,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:03,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:03,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 05:46:03,105 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1948555377] [2020-07-20 05:46:03,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 05:46:03,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 05:46:03,106 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730185063] [2020-07-20 05:46:03,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 05:46:03,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:46:03,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 05:46:03,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 05:46:03,107 INFO L87 Difference]: Start difference. First operand 1704 states and 2374 transitions. Second operand 3 states. [2020-07-20 05:46:03,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:46:03,159 INFO L93 Difference]: Finished difference Result 2556 states and 3544 transitions. [2020-07-20 05:46:03,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 05:46:03,160 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-07-20 05:46:03,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:46:03,171 INFO L225 Difference]: With dead ends: 2556 [2020-07-20 05:46:03,171 INFO L226 Difference]: Without dead ends: 1738 [2020-07-20 05:46:03,175 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 [2020-07-20 05:46:03,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1738 states. [2020-07-20 05:46:03,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1738 to 1736. [2020-07-20 05:46:03,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1736 states. [2020-07-20 05:46:03,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1736 states to 1736 states and 2374 transitions. [2020-07-20 05:46:03,248 INFO L78 Accepts]: Start accepts. Automaton has 1736 states and 2374 transitions. Word has length 25 [2020-07-20 05:46:03,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:46:03,249 INFO L479 AbstractCegarLoop]: Abstraction has 1736 states and 2374 transitions. [2020-07-20 05:46:03,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 05:46:03,249 INFO L276 IsEmpty]: Start isEmpty. Operand 1736 states and 2374 transitions. [2020-07-20 05:46:03,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-20 05:46:03,252 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:46:03,252 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] [2020-07-20 05:46:03,253 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-07-20 05:46:03,253 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:46:03,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:46:03,253 INFO L82 PathProgramCache]: Analyzing trace with hash -486371205, now seen corresponding path program 1 times [2020-07-20 05:46:03,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:46:03,255 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547476995] [2020-07-20 05:46:03,256 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@77f90890 [2020-07-20 05:46:03,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:03,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:03,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 05:46:03,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547476995] [2020-07-20 05:46:03,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 05:46:03,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 05:46:03,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238014207] [2020-07-20 05:46:03,295 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 05:46:03,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:46:03,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 05:46:03,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 05:46:03,297 INFO L87 Difference]: Start difference. First operand 1736 states and 2374 transitions. Second operand 3 states. [2020-07-20 05:46:03,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:46:03,378 INFO L93 Difference]: Finished difference Result 2956 states and 4104 transitions. [2020-07-20 05:46:03,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 05:46:03,379 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-07-20 05:46:03,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:46:03,397 INFO L225 Difference]: With dead ends: 2956 [2020-07-20 05:46:03,398 INFO L226 Difference]: Without dead ends: 2954 [2020-07-20 05:46:03,399 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 [2020-07-20 05:46:03,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2020-07-20 05:46:03,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 2568. [2020-07-20 05:46:03,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2568 states. [2020-07-20 05:46:03,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2568 states to 2568 states and 3398 transitions. [2020-07-20 05:46:03,503 INFO L78 Accepts]: Start accepts. Automaton has 2568 states and 3398 transitions. Word has length 25 [2020-07-20 05:46:03,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:46:03,503 INFO L479 AbstractCegarLoop]: Abstraction has 2568 states and 3398 transitions. [2020-07-20 05:46:03,503 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 05:46:03,503 INFO L276 IsEmpty]: Start isEmpty. Operand 2568 states and 3398 transitions. [2020-07-20 05:46:03,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-20 05:46:03,508 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:46:03,508 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] [2020-07-20 05:46:03,509 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-07-20 05:46:03,509 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:46:03,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:46:03,509 INFO L82 PathProgramCache]: Analyzing trace with hash -228205767, now seen corresponding path program 1 times [2020-07-20 05:46:03,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:46:03,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169846526] [2020-07-20 05:46:03,510 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@77f90890 [2020-07-20 05:46:03,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:03,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:03,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 05:46:03,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169846526] [2020-07-20 05:46:03,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 05:46:03,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 05:46:03,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607075701] [2020-07-20 05:46:03,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 05:46:03,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:46:03,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 05:46:03,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 05:46:03,581 INFO L87 Difference]: Start difference. First operand 2568 states and 3398 transitions. Second operand 3 states. [2020-07-20 05:46:03,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:46:03,670 INFO L93 Difference]: Finished difference Result 5836 states and 7688 transitions. [2020-07-20 05:46:03,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 05:46:03,670 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-07-20 05:46:03,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:46:03,685 INFO L225 Difference]: With dead ends: 5836 [2020-07-20 05:46:03,686 INFO L226 Difference]: Without dead ends: 3338 [2020-07-20 05:46:03,691 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 [2020-07-20 05:46:03,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3338 states. [2020-07-20 05:46:03,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3338 to 3336. [2020-07-20 05:46:03,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3336 states. [2020-07-20 05:46:03,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3336 states to 3336 states and 4294 transitions. [2020-07-20 05:46:03,793 INFO L78 Accepts]: Start accepts. Automaton has 3336 states and 4294 transitions. Word has length 25 [2020-07-20 05:46:03,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:46:03,794 INFO L479 AbstractCegarLoop]: Abstraction has 3336 states and 4294 transitions. [2020-07-20 05:46:03,794 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 05:46:03,794 INFO L276 IsEmpty]: Start isEmpty. Operand 3336 states and 4294 transitions. [2020-07-20 05:46:03,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-20 05:46:03,799 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:46:03,799 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] [2020-07-20 05:46:03,801 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-07-20 05:46:03,802 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:46:03,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:46:03,802 INFO L82 PathProgramCache]: Analyzing trace with hash 2102577579, now seen corresponding path program 1 times [2020-07-20 05:46:03,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:46:03,803 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032410924] [2020-07-20 05:46:03,803 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@77f90890 [2020-07-20 05:46:03,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:03,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:03,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 05:46:03,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032410924] [2020-07-20 05:46:03,827 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 05:46:03,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 05:46:03,828 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982486941] [2020-07-20 05:46:03,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 05:46:03,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:46:03,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 05:46:03,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 05:46:03,829 INFO L87 Difference]: Start difference. First operand 3336 states and 4294 transitions. Second operand 3 states. [2020-07-20 05:46:03,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:46:03,890 INFO L93 Difference]: Finished difference Result 5004 states and 6408 transitions. [2020-07-20 05:46:03,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 05:46:03,891 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-07-20 05:46:03,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:46:03,906 INFO L225 Difference]: With dead ends: 5004 [2020-07-20 05:46:03,907 INFO L226 Difference]: Without dead ends: 3402 [2020-07-20 05:46:03,911 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 [2020-07-20 05:46:03,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3402 states. [2020-07-20 05:46:03,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3402 to 3400. [2020-07-20 05:46:03,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3400 states. [2020-07-20 05:46:04,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3400 states to 3400 states and 4294 transitions. [2020-07-20 05:46:04,010 INFO L78 Accepts]: Start accepts. Automaton has 3400 states and 4294 transitions. Word has length 26 [2020-07-20 05:46:04,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:46:04,010 INFO L479 AbstractCegarLoop]: Abstraction has 3400 states and 4294 transitions. [2020-07-20 05:46:04,010 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 05:46:04,010 INFO L276 IsEmpty]: Start isEmpty. Operand 3400 states and 4294 transitions. [2020-07-20 05:46:04,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-20 05:46:04,016 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:46:04,016 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] [2020-07-20 05:46:04,016 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-07-20 05:46:04,016 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:46:04,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:46:04,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1515771565, now seen corresponding path program 1 times [2020-07-20 05:46:04,017 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:46:04,017 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395965791] [2020-07-20 05:46:04,017 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@77f90890 [2020-07-20 05:46:04,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:04,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:04,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 05:46:04,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395965791] [2020-07-20 05:46:04,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 05:46:04,039 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 05:46:04,039 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528523285] [2020-07-20 05:46:04,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 05:46:04,040 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:46:04,040 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 05:46:04,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 05:46:04,041 INFO L87 Difference]: Start difference. First operand 3400 states and 4294 transitions. Second operand 3 states. [2020-07-20 05:46:04,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:46:04,202 INFO L93 Difference]: Finished difference Result 9804 states and 12104 transitions. [2020-07-20 05:46:04,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 05:46:04,203 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-07-20 05:46:04,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:46:04,258 INFO L225 Difference]: With dead ends: 9804 [2020-07-20 05:46:04,258 INFO L226 Difference]: Without dead ends: 6538 [2020-07-20 05:46:04,266 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 [2020-07-20 05:46:04,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6538 states. [2020-07-20 05:46:04,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6538 to 6536. [2020-07-20 05:46:04,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6536 states. [2020-07-20 05:46:04,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6536 states to 6536 states and 7814 transitions. [2020-07-20 05:46:04,473 INFO L78 Accepts]: Start accepts. Automaton has 6536 states and 7814 transitions. Word has length 26 [2020-07-20 05:46:04,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:46:04,474 INFO L479 AbstractCegarLoop]: Abstraction has 6536 states and 7814 transitions. [2020-07-20 05:46:04,474 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 05:46:04,474 INFO L276 IsEmpty]: Start isEmpty. Operand 6536 states and 7814 transitions. [2020-07-20 05:46:04,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-20 05:46:04,483 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:46:04,484 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] [2020-07-20 05:46:04,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-07-20 05:46:04,484 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:46:04,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:46:04,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1257606127, now seen corresponding path program 1 times [2020-07-20 05:46:04,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:46:04,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069495269] [2020-07-20 05:46:04,488 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@77f90890 [2020-07-20 05:46:04,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:04,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:04,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 05:46:04,519 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069495269] [2020-07-20 05:46:04,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 05:46:04,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 05:46:04,519 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524423685] [2020-07-20 05:46:04,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 05:46:04,520 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:46:04,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 05:46:04,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 05:46:04,523 INFO L87 Difference]: Start difference. First operand 6536 states and 7814 transitions. Second operand 3 states. [2020-07-20 05:46:04,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:46:04,646 INFO L93 Difference]: Finished difference Result 7052 states and 8584 transitions. [2020-07-20 05:46:04,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 05:46:04,647 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-07-20 05:46:04,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:46:04,664 INFO L225 Difference]: With dead ends: 7052 [2020-07-20 05:46:04,665 INFO L226 Difference]: Without dead ends: 7050 [2020-07-20 05:46:04,669 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 [2020-07-20 05:46:04,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7050 states. [2020-07-20 05:46:04,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7050 to 6536. [2020-07-20 05:46:04,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6536 states. [2020-07-20 05:46:04,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6536 states to 6536 states and 7686 transitions. [2020-07-20 05:46:04,940 INFO L78 Accepts]: Start accepts. Automaton has 6536 states and 7686 transitions. Word has length 26 [2020-07-20 05:46:04,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:46:04,940 INFO L479 AbstractCegarLoop]: Abstraction has 6536 states and 7686 transitions. [2020-07-20 05:46:04,940 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 05:46:04,940 INFO L276 IsEmpty]: Start isEmpty. Operand 6536 states and 7686 transitions. [2020-07-20 05:46:04,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-20 05:46:04,955 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:46:04,955 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] [2020-07-20 05:46:04,955 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-07-20 05:46:04,956 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:46:04,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:46:04,956 INFO L82 PathProgramCache]: Analyzing trace with hash -255505650, now seen corresponding path program 1 times [2020-07-20 05:46:04,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:46:04,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191967608] [2020-07-20 05:46:04,957 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@77f90890 [2020-07-20 05:46:04,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:04,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:04,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 05:46:04,978 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191967608] [2020-07-20 05:46:04,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 05:46:04,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 05:46:04,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014147368] [2020-07-20 05:46:04,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 05:46:04,979 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:46:04,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 05:46:04,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 05:46:04,980 INFO L87 Difference]: Start difference. First operand 6536 states and 7686 transitions. Second operand 3 states. [2020-07-20 05:46:05,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:46:05,134 INFO L93 Difference]: Finished difference Result 10634 states and 12423 transitions. [2020-07-20 05:46:05,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 05:46:05,134 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-07-20 05:46:05,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:46:05,157 INFO L225 Difference]: With dead ends: 10634 [2020-07-20 05:46:05,157 INFO L226 Difference]: Without dead ends: 10632 [2020-07-20 05:46:05,163 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 [2020-07-20 05:46:05,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10632 states. [2020-07-20 05:46:05,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10632 to 10120. [2020-07-20 05:46:05,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10120 states. [2020-07-20 05:46:05,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10120 states to 10120 states and 11654 transitions. [2020-07-20 05:46:05,380 INFO L78 Accepts]: Start accepts. Automaton has 10120 states and 11654 transitions. Word has length 27 [2020-07-20 05:46:05,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:46:05,381 INFO L479 AbstractCegarLoop]: Abstraction has 10120 states and 11654 transitions. [2020-07-20 05:46:05,381 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 05:46:05,381 INFO L276 IsEmpty]: Start isEmpty. Operand 10120 states and 11654 transitions. [2020-07-20 05:46:05,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-20 05:46:05,399 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:46:05,399 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] [2020-07-20 05:46:05,399 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-07-20 05:46:05,400 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:46:05,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:46:05,400 INFO L82 PathProgramCache]: Analyzing trace with hash 2659788, now seen corresponding path program 1 times [2020-07-20 05:46:05,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:46:05,400 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908729453] [2020-07-20 05:46:05,401 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@77f90890 [2020-07-20 05:46:05,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:05,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:46:05,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 05:46:05,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908729453] [2020-07-20 05:46:05,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 05:46:05,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 05:46:05,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000378328] [2020-07-20 05:46:05,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 05:46:05,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:46:05,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 05:46:05,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 05:46:05,422 INFO L87 Difference]: Start difference. First operand 10120 states and 11654 transitions. Second operand 3 states. [2020-07-20 05:46:05,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:46:05,741 INFO L93 Difference]: Finished difference Result 22664 states and 25734 transitions. [2020-07-20 05:46:05,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 05:46:05,742 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-07-20 05:46:05,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:46:05,743 INFO L225 Difference]: With dead ends: 22664 [2020-07-20 05:46:05,743 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 05:46:05,797 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 [2020-07-20 05:46:05,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 05:46:05,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 05:46:05,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 05:46:05,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 05:46:05,799 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2020-07-20 05:46:05,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:46:05,799 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 05:46:05,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 05:46:05,799 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 05:46:05,800 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 05:46:05,800 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-07-20 05:46:05,804 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 05:46:05,838 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-20 05:46:05,839 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 05:46:05,839 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 05:46:05,839 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 05:46:05,839 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 05:46:05,840 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 05:46:05,840 INFO L268 CegarLoopResult]: For program point L93-1(lines 36 144) no Hoare annotation was computed. [2020-07-20 05:46:05,840 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 4 149) no Hoare annotation was computed. [2020-07-20 05:46:05,840 INFO L268 CegarLoopResult]: For program point L85-1(lines 36 144) no Hoare annotation was computed. [2020-07-20 05:46:05,840 INFO L268 CegarLoopResult]: For program point L110(line 110) no Hoare annotation was computed. [2020-07-20 05:46:05,841 INFO L268 CegarLoopResult]: For program point L77-1(lines 36 144) no Hoare annotation was computed. [2020-07-20 05:46:05,841 INFO L268 CegarLoopResult]: For program point L135(line 135) no Hoare annotation was computed. [2020-07-20 05:46:05,841 INFO L268 CegarLoopResult]: For program point L69-1(lines 36 144) no Hoare annotation was computed. [2020-07-20 05:46:05,841 INFO L268 CegarLoopResult]: For program point L61(lines 61 63) no Hoare annotation was computed. [2020-07-20 05:46:05,841 INFO L268 CegarLoopResult]: For program point L61-2(lines 36 144) no Hoare annotation was computed. [2020-07-20 05:46:05,843 INFO L268 CegarLoopResult]: For program point L119-1(lines 36 144) no Hoare annotation was computed. [2020-07-20 05:46:05,843 INFO L268 CegarLoopResult]: For program point L120(line 120) no Hoare annotation was computed. [2020-07-20 05:46:05,843 INFO L271 CegarLoopResult]: At program point L145(lines 5 149) the Hoare annotation is: true [2020-07-20 05:46:05,843 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 4 149) no Hoare annotation was computed. [2020-07-20 05:46:05,844 INFO L268 CegarLoopResult]: For program point L104-1(lines 36 144) no Hoare annotation was computed. [2020-07-20 05:46:05,844 INFO L268 CegarLoopResult]: For program point L38(lines 38 40) no Hoare annotation was computed. [2020-07-20 05:46:05,844 INFO L268 CegarLoopResult]: For program point L129-1(lines 36 144) no Hoare annotation was computed. [2020-07-20 05:46:05,844 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 147) no Hoare annotation was computed. [2020-07-20 05:46:05,844 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 4 149) the Hoare annotation is: true [2020-07-20 05:46:05,845 INFO L268 CegarLoopResult]: For program point L105(line 105) no Hoare annotation was computed. [2020-07-20 05:46:05,845 INFO L268 CegarLoopResult]: For program point L130(line 130) no Hoare annotation was computed. [2020-07-20 05:46:05,845 INFO L268 CegarLoopResult]: For program point L89-1(lines 36 144) no Hoare annotation was computed. [2020-07-20 05:46:05,845 INFO L268 CegarLoopResult]: For program point L114-1(lines 36 144) no Hoare annotation was computed. [2020-07-20 05:46:05,845 INFO L268 CegarLoopResult]: For program point L81-1(lines 36 144) no Hoare annotation was computed. [2020-07-20 05:46:05,846 INFO L271 CegarLoopResult]: At program point L139-1(lines 36 144) the Hoare annotation is: true [2020-07-20 05:46:05,846 INFO L268 CegarLoopResult]: For program point L73-1(lines 36 144) no Hoare annotation was computed. [2020-07-20 05:46:05,846 INFO L268 CegarLoopResult]: For program point L65-1(lines 36 144) no Hoare annotation was computed. [2020-07-20 05:46:05,846 INFO L268 CegarLoopResult]: For program point L115(line 115) no Hoare annotation was computed. [2020-07-20 05:46:05,846 INFO L268 CegarLoopResult]: For program point L140(line 140) no Hoare annotation was computed. [2020-07-20 05:46:05,847 INFO L264 CegarLoopResult]: At program point L140-1(lines 5 149) the Hoare annotation is: false [2020-07-20 05:46:05,847 INFO L268 CegarLoopResult]: For program point L99-1(lines 36 144) no Hoare annotation was computed. [2020-07-20 05:46:05,847 INFO L268 CegarLoopResult]: For program point L124-1(lines 36 144) no Hoare annotation was computed. [2020-07-20 05:46:05,847 INFO L268 CegarLoopResult]: For program point L100(line 100) no Hoare annotation was computed. [2020-07-20 05:46:05,847 INFO L268 CegarLoopResult]: For program point L125(line 125) no Hoare annotation was computed. [2020-07-20 05:46:05,848 INFO L268 CegarLoopResult]: For program point L109-1(lines 36 144) no Hoare annotation was computed. [2020-07-20 05:46:05,848 INFO L268 CegarLoopResult]: For program point L134-1(lines 36 144) no Hoare annotation was computed. [2020-07-20 05:46:05,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 05:46:05 BoogieIcfgContainer [2020-07-20 05:46:05,870 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 05:46:05,873 INFO L168 Benchmark]: Toolchain (without parser) took 5858.11 ms. Allocated memory was 143.1 MB in the beginning and 379.6 MB in the end (delta: 236.5 MB). Free memory was 100.5 MB in the beginning and 236.7 MB in the end (delta: -136.2 MB). Peak memory consumption was 100.2 MB. Max. memory is 7.1 GB. [2020-07-20 05:46:05,874 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 143.1 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-20 05:46:05,877 INFO L168 Benchmark]: CACSL2BoogieTranslator took 335.21 ms. Allocated memory is still 143.1 MB. Free memory was 100.1 MB in the beginning and 89.6 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-07-20 05:46:05,878 INFO L168 Benchmark]: Boogie Preprocessor took 132.88 ms. Allocated memory was 143.1 MB in the beginning and 199.8 MB in the end (delta: 56.6 MB). Free memory was 89.6 MB in the beginning and 177.3 MB in the end (delta: -87.7 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-07-20 05:46:05,881 INFO L168 Benchmark]: RCFGBuilder took 383.59 ms. Allocated memory is still 199.8 MB. Free memory was 177.3 MB in the beginning and 158.8 MB in the end (delta: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 7.1 GB. [2020-07-20 05:46:05,887 INFO L168 Benchmark]: TraceAbstraction took 4995.20 ms. Allocated memory was 199.8 MB in the beginning and 379.6 MB in the end (delta: 179.8 MB). Free memory was 158.1 MB in the beginning and 236.7 MB in the end (delta: -78.6 MB). Peak memory consumption was 101.3 MB. Max. memory is 7.1 GB. [2020-07-20 05:46:05,892 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 143.1 MB. Free memory was 119.2 MB in the beginning and 119.0 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 335.21 ms. Allocated memory is still 143.1 MB. Free memory was 100.1 MB in the beginning and 89.6 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 132.88 ms. Allocated memory was 143.1 MB in the beginning and 199.8 MB in the end (delta: 56.6 MB). Free memory was 89.6 MB in the beginning and 177.3 MB in the end (delta: -87.7 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 383.59 ms. Allocated memory is still 199.8 MB. Free memory was 177.3 MB in the beginning and 158.8 MB in the end (delta: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4995.20 ms. Allocated memory was 199.8 MB in the beginning and 379.6 MB in the end (delta: 179.8 MB). Free memory was 158.1 MB in the beginning and 236.7 MB in the end (delta: -78.6 MB). Peak memory consumption was 101.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 147]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 36]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 41 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.8s, OverallIterations: 25, TraceHistogramMax: 1, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1937 SDtfs, 926 SDslu, 1314 SDs, 0 SdLazy, 133 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 125 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10120occurred in iteration=24, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.4s AutomataMinimizationTime, 25 MinimizatonAttempts, 2072 StatesRemovedByMinimization, 24 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 522 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, 0.6s InterpolantComputationTime, 575 NumberOfCodeBlocks, 575 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 550 ConstructedInterpolants, 0 QuantifiedInterpolants, 23930 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 25 InterpolantComputations, 25 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...