/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_5.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 05:45:54,408 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 05:45:54,411 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 05:45:54,431 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 05:45:54,432 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 05:45:54,434 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 05:45:54,436 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 05:45:54,445 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 05:45:54,449 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 05:45:54,454 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 05:45:54,455 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 05:45:54,456 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 05:45:54,457 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 05:45:54,458 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 05:45:54,460 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 05:45:54,461 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 05:45:54,463 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 05:45:54,463 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 05:45:54,465 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 05:45:54,470 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 05:45:54,475 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 05:45:54,478 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 05:45:54,479 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 05:45:54,480 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 05:45:54,483 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 05:45:54,493 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 05:45:54,493 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 05:45:54,494 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 05:45:54,495 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 05:45:54,509 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 05:45:54,509 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 05:45:54,511 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 05:45:54,511 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 05:45:54,511 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 05:45:54,511 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 05:45:54,512 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 05:45:54,512 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 05:45:54,512 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 05:45:54,512 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 05:45:54,512 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 05:45:54,512 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 05:45:54,513 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 05:45:54,513 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 05:45:54,513 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 05:45:54,513 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 05:45:54,513 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 05:45:54,514 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 05:45:54,514 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 05:45:54,514 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 05:45:54,514 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 05:45:54,514 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 05:45:54,515 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 05:45:54,515 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 05:45:54,515 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 05:45:54,515 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 05:45:54,515 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 05:45:54,516 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 05:45:54,516 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 05:45:54,516 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 05:45:54,847 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 05:45:54,874 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 05:45:54,878 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 05:45:54,880 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 05:45:54,880 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 05:45:54,882 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_5.c [2020-07-20 05:45:54,960 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b58d9c318/8f755ab41c37434ba2a45d42fb7db02f/FLAG67144527f [2020-07-20 05:45:55,420 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 05:45:55,423 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/locks/test_locks_5.c [2020-07-20 05:45:55,433 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b58d9c318/8f755ab41c37434ba2a45d42fb7db02f/FLAG67144527f [2020-07-20 05:45:55,804 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b58d9c318/8f755ab41c37434ba2a45d42fb7db02f [2020-07-20 05:45:55,817 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 05:45:55,820 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 05:45:55,824 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 05:45:55,825 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 05:45:55,829 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 05:45:55,830 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 05:45:55" (1/1) ... [2020-07-20 05:45:55,835 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53f8717a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:45:55, skipping insertion in model container [2020-07-20 05:45:55,835 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 05:45:55" (1/1) ... [2020-07-20 05:45:55,845 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 05:45:55,866 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 05:45:56,075 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 05:45:56,083 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 05:45:56,123 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 05:45:56,144 INFO L208 MainTranslator]: Completed translation [2020-07-20 05:45:56,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:45:56 WrapperNode [2020-07-20 05:45:56,145 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 05:45:56,146 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 05:45:56,146 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 05:45:56,146 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 05:45:56,162 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:45:56" (1/1) ... [2020-07-20 05:45:56,165 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:45:56" (1/1) ... [2020-07-20 05:45:56,176 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:45:56" (1/1) ... [2020-07-20 05:45:56,176 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:45:56" (1/1) ... [2020-07-20 05:45:56,311 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:45:56" (1/1) ... [2020-07-20 05:45:56,318 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:45:56" (1/1) ... [2020-07-20 05:45:56,320 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:45:56" (1/1) ... [2020-07-20 05:45:56,322 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 05:45:56,323 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 05:45:56,323 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 05:45:56,323 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 05:45:56,324 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:45:56" (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 05:45:56,403 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 05:45:56,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 05:45:56,404 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 05:45:56,404 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 05:45:56,404 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 05:45:56,404 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 05:45:56,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 05:45:56,405 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 05:45:56,797 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 05:45:56,798 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 05:45:56,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 05:45:56 BoogieIcfgContainer [2020-07-20 05:45:56,803 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 05:45:56,804 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 05:45:56,804 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 05:45:56,808 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 05:45:56,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 05:45:55" (1/3) ... [2020-07-20 05:45:56,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44194593 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 05:45:56, skipping insertion in model container [2020-07-20 05:45:56,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:45:56" (2/3) ... [2020-07-20 05:45:56,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44194593 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 05:45:56, skipping insertion in model container [2020-07-20 05:45:56,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 05:45:56" (3/3) ... [2020-07-20 05:45:56,812 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_5.c [2020-07-20 05:45:56,822 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 05:45:56,830 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 05:45:56,848 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 05:45:56,871 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 05:45:56,872 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 05:45:56,872 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 05:45:56,872 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 05:45:56,872 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 05:45:56,873 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 05:45:56,873 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 05:45:56,873 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 05:45:56,893 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-07-20 05:45:56,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-20 05:45:56,899 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:45:56,900 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:45:56,901 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:45:56,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:45:56,906 INFO L82 PathProgramCache]: Analyzing trace with hash 316328318, now seen corresponding path program 1 times [2020-07-20 05:45:56,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:45:56,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743634272] [2020-07-20 05:45:56,914 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@69f52242 [2020-07-20 05:45:57,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:45:57,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:45:57,083 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 05:45:57,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743634272] [2020-07-20 05:45:57,085 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 05:45:57,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 05:45:57,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143050071] [2020-07-20 05:45:57,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 05:45:57,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:45:57,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 05:45:57,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 05:45:57,111 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 3 states. [2020-07-20 05:45:57,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:45:57,193 INFO L93 Difference]: Finished difference Result 57 states and 90 transitions. [2020-07-20 05:45:57,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 05:45:57,195 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-07-20 05:45:57,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:45:57,207 INFO L225 Difference]: With dead ends: 57 [2020-07-20 05:45:57,208 INFO L226 Difference]: Without dead ends: 42 [2020-07-20 05:45:57,211 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 05:45:57,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-07-20 05:45:57,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 30. [2020-07-20 05:45:57,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-07-20 05:45:57,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 49 transitions. [2020-07-20 05:45:57,255 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 49 transitions. Word has length 15 [2020-07-20 05:45:57,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:45:57,256 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 49 transitions. [2020-07-20 05:45:57,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 05:45:57,256 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 49 transitions. [2020-07-20 05:45:57,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-20 05:45:57,257 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:45:57,257 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:45:57,258 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 05:45:57,258 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:45:57,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:45:57,259 INFO L82 PathProgramCache]: Analyzing trace with hash -493018308, now seen corresponding path program 1 times [2020-07-20 05:45:57,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:45:57,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536356860] [2020-07-20 05:45:57,260 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@69f52242 [2020-07-20 05:45:57,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:45:57,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:45:57,316 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 05:45:57,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536356860] [2020-07-20 05:45:57,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 05:45:57,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 05:45:57,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287600512] [2020-07-20 05:45:57,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 05:45:57,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:45:57,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 05:45:57,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 05:45:57,321 INFO L87 Difference]: Start difference. First operand 30 states and 49 transitions. Second operand 3 states. [2020-07-20 05:45:57,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:45:57,356 INFO L93 Difference]: Finished difference Result 67 states and 112 transitions. [2020-07-20 05:45:57,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 05:45:57,357 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-07-20 05:45:57,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:45:57,359 INFO L225 Difference]: With dead ends: 67 [2020-07-20 05:45:57,359 INFO L226 Difference]: Without dead ends: 42 [2020-07-20 05:45:57,360 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 05:45:57,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-07-20 05:45:57,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-07-20 05:45:57,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-07-20 05:45:57,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 65 transitions. [2020-07-20 05:45:57,369 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 65 transitions. Word has length 15 [2020-07-20 05:45:57,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:45:57,370 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 65 transitions. [2020-07-20 05:45:57,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 05:45:57,370 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 65 transitions. [2020-07-20 05:45:57,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-20 05:45:57,371 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:45:57,371 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:45:57,372 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-20 05:45:57,372 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:45:57,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:45:57,373 INFO L82 PathProgramCache]: Analyzing trace with hash 1216458266, now seen corresponding path program 1 times [2020-07-20 05:45:57,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:45:57,373 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246148451] [2020-07-20 05:45:57,374 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@69f52242 [2020-07-20 05:45:57,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:45:57,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:45:57,418 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 05:45:57,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246148451] [2020-07-20 05:45:57,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 05:45:57,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 05:45:57,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017747997] [2020-07-20 05:45:57,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 05:45:57,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:45:57,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 05:45:57,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 05:45:57,422 INFO L87 Difference]: Start difference. First operand 40 states and 65 transitions. Second operand 3 states. [2020-07-20 05:45:57,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:45:57,441 INFO L93 Difference]: Finished difference Result 63 states and 99 transitions. [2020-07-20 05:45:57,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 05:45:57,442 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-07-20 05:45:57,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:45:57,444 INFO L225 Difference]: With dead ends: 63 [2020-07-20 05:45:57,444 INFO L226 Difference]: Without dead ends: 45 [2020-07-20 05:45:57,445 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 05:45:57,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-07-20 05:45:57,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2020-07-20 05:45:57,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-07-20 05:45:57,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 67 transitions. [2020-07-20 05:45:57,453 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 67 transitions. Word has length 16 [2020-07-20 05:45:57,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:45:57,454 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 67 transitions. [2020-07-20 05:45:57,454 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 05:45:57,454 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 67 transitions. [2020-07-20 05:45:57,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-20 05:45:57,455 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:45:57,455 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:45:57,456 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-20 05:45:57,456 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:45:57,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:45:57,456 INFO L82 PathProgramCache]: Analyzing trace with hash 1896516636, now seen corresponding path program 1 times [2020-07-20 05:45:57,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:45:57,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174863113] [2020-07-20 05:45:57,457 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@69f52242 [2020-07-20 05:45:57,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:45:57,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:45:57,507 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 05:45:57,508 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174863113] [2020-07-20 05:45:57,508 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 05:45:57,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 05:45:57,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826600002] [2020-07-20 05:45:57,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 05:45:57,510 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:45:57,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 05:45:57,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 05:45:57,511 INFO L87 Difference]: Start difference. First operand 43 states and 67 transitions. Second operand 3 states. [2020-07-20 05:45:57,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:45:57,532 INFO L93 Difference]: Finished difference Result 76 states and 120 transitions. [2020-07-20 05:45:57,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 05:45:57,533 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-07-20 05:45:57,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:45:57,534 INFO L225 Difference]: With dead ends: 76 [2020-07-20 05:45:57,535 INFO L226 Difference]: Without dead ends: 74 [2020-07-20 05:45:57,535 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 05:45:57,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-07-20 05:45:57,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 56. [2020-07-20 05:45:57,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-07-20 05:45:57,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 88 transitions. [2020-07-20 05:45:57,546 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 88 transitions. Word has length 16 [2020-07-20 05:45:57,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:45:57,547 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 88 transitions. [2020-07-20 05:45:57,547 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 05:45:57,548 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 88 transitions. [2020-07-20 05:45:57,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-20 05:45:57,549 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:45:57,549 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:45:57,549 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-20 05:45:57,550 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:45:57,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:45:57,550 INFO L82 PathProgramCache]: Analyzing trace with hash 1087170010, now seen corresponding path program 1 times [2020-07-20 05:45:57,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:45:57,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954906941] [2020-07-20 05:45:57,551 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@69f52242 [2020-07-20 05:45:57,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:45:57,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:45:57,602 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 05:45:57,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954906941] [2020-07-20 05:45:57,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 05:45:57,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 05:45:57,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79078887] [2020-07-20 05:45:57,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 05:45:57,604 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:45:57,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 05:45:57,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 05:45:57,605 INFO L87 Difference]: Start difference. First operand 56 states and 88 transitions. Second operand 3 states. [2020-07-20 05:45:57,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:45:57,634 INFO L93 Difference]: Finished difference Result 124 states and 198 transitions. [2020-07-20 05:45:57,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 05:45:57,635 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-07-20 05:45:57,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:45:57,636 INFO L225 Difference]: With dead ends: 124 [2020-07-20 05:45:57,637 INFO L226 Difference]: Without dead ends: 76 [2020-07-20 05:45:57,638 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 05:45:57,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-07-20 05:45:57,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2020-07-20 05:45:57,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-07-20 05:45:57,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 114 transitions. [2020-07-20 05:45:57,649 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 114 transitions. Word has length 16 [2020-07-20 05:45:57,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:45:57,650 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 114 transitions. [2020-07-20 05:45:57,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 05:45:57,650 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 114 transitions. [2020-07-20 05:45:57,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-20 05:45:57,651 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:45:57,651 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:45:57,652 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-20 05:45:57,652 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:45:57,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:45:57,652 INFO L82 PathProgramCache]: Analyzing trace with hash -1337311087, now seen corresponding path program 1 times [2020-07-20 05:45:57,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:45:57,653 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436999212] [2020-07-20 05:45:57,653 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@69f52242 [2020-07-20 05:45:57,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:45:57,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:45:57,688 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 05:45:57,689 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436999212] [2020-07-20 05:45:57,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 05:45:57,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 05:45:57,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378658069] [2020-07-20 05:45:57,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 05:45:57,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:45:57,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 05:45:57,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 05:45:57,691 INFO L87 Difference]: Start difference. First operand 74 states and 114 transitions. Second operand 3 states. [2020-07-20 05:45:57,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:45:57,714 INFO L93 Difference]: Finished difference Result 111 states and 169 transitions. [2020-07-20 05:45:57,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 05:45:57,715 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-07-20 05:45:57,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:45:57,716 INFO L225 Difference]: With dead ends: 111 [2020-07-20 05:45:57,716 INFO L226 Difference]: Without dead ends: 78 [2020-07-20 05:45:57,717 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 05:45:57,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-07-20 05:45:57,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2020-07-20 05:45:57,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-07-20 05:45:57,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 114 transitions. [2020-07-20 05:45:57,728 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 114 transitions. Word has length 17 [2020-07-20 05:45:57,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:45:57,729 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 114 transitions. [2020-07-20 05:45:57,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 05:45:57,729 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 114 transitions. [2020-07-20 05:45:57,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-20 05:45:57,730 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:45:57,730 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:45:57,731 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-20 05:45:57,731 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:45:57,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:45:57,732 INFO L82 PathProgramCache]: Analyzing trace with hash -657252717, now seen corresponding path program 1 times [2020-07-20 05:45:57,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:45:57,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625843785] [2020-07-20 05:45:57,733 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@69f52242 [2020-07-20 05:45:57,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:45:57,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:45:57,763 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 05:45:57,764 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625843785] [2020-07-20 05:45:57,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 05:45:57,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 05:45:57,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033525344] [2020-07-20 05:45:57,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 05:45:57,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:45:57,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 05:45:57,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 05:45:57,766 INFO L87 Difference]: Start difference. First operand 76 states and 114 transitions. Second operand 3 states. [2020-07-20 05:45:57,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:45:57,784 INFO L93 Difference]: Finished difference Result 132 states and 200 transitions. [2020-07-20 05:45:57,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 05:45:57,785 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-07-20 05:45:57,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:45:57,787 INFO L225 Difference]: With dead ends: 132 [2020-07-20 05:45:57,787 INFO L226 Difference]: Without dead ends: 130 [2020-07-20 05:45:57,788 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 05:45:57,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-07-20 05:45:57,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 104. [2020-07-20 05:45:57,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-07-20 05:45:57,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 154 transitions. [2020-07-20 05:45:57,801 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 154 transitions. Word has length 17 [2020-07-20 05:45:57,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:45:57,802 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 154 transitions. [2020-07-20 05:45:57,802 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 05:45:57,802 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 154 transitions. [2020-07-20 05:45:57,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-20 05:45:57,804 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:45:57,804 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:45:57,804 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-20 05:45:57,804 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:45:57,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:45:57,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1466599343, now seen corresponding path program 1 times [2020-07-20 05:45:57,805 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:45:57,806 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972541593] [2020-07-20 05:45:57,806 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@69f52242 [2020-07-20 05:45:57,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:45:57,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:45:57,834 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 05:45:57,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972541593] [2020-07-20 05:45:57,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 05:45:57,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 05:45:57,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314252800] [2020-07-20 05:45:57,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 05:45:57,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:45:57,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 05:45:57,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 05:45:57,837 INFO L87 Difference]: Start difference. First operand 104 states and 154 transitions. Second operand 3 states. [2020-07-20 05:45:57,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:45:57,863 INFO L93 Difference]: Finished difference Result 232 states and 344 transitions. [2020-07-20 05:45:57,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 05:45:57,863 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-07-20 05:45:57,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:45:57,865 INFO L225 Difference]: With dead ends: 232 [2020-07-20 05:45:57,865 INFO L226 Difference]: Without dead ends: 138 [2020-07-20 05:45:57,866 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 05:45:57,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-07-20 05:45:57,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 136. [2020-07-20 05:45:57,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-07-20 05:45:57,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 194 transitions. [2020-07-20 05:45:57,882 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 194 transitions. Word has length 17 [2020-07-20 05:45:57,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:45:57,882 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 194 transitions. [2020-07-20 05:45:57,882 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 05:45:57,883 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 194 transitions. [2020-07-20 05:45:57,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-20 05:45:57,884 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:45:57,884 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:45:57,884 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-20 05:45:57,885 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:45:57,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:45:57,885 INFO L82 PathProgramCache]: Analyzing trace with hash 1100217935, now seen corresponding path program 1 times [2020-07-20 05:45:57,885 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:45:57,886 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333023496] [2020-07-20 05:45:57,886 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@69f52242 [2020-07-20 05:45:57,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:45:57,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:45:57,940 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 05:45:57,940 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333023496] [2020-07-20 05:45:57,941 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 05:45:57,941 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 05:45:57,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16437042] [2020-07-20 05:45:57,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 05:45:57,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:45:57,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 05:45:57,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 05:45:57,944 INFO L87 Difference]: Start difference. First operand 136 states and 194 transitions. Second operand 3 states. [2020-07-20 05:45:57,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:45:57,986 INFO L93 Difference]: Finished difference Result 204 states and 288 transitions. [2020-07-20 05:45:57,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 05:45:57,986 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-07-20 05:45:57,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:45:57,988 INFO L225 Difference]: With dead ends: 204 [2020-07-20 05:45:57,988 INFO L226 Difference]: Without dead ends: 142 [2020-07-20 05:45:57,989 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 05:45:57,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-07-20 05:45:58,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 140. [2020-07-20 05:45:58,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-07-20 05:45:58,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 194 transitions. [2020-07-20 05:45:58,016 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 194 transitions. Word has length 18 [2020-07-20 05:45:58,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:45:58,018 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 194 transitions. [2020-07-20 05:45:58,018 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 05:45:58,018 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 194 transitions. [2020-07-20 05:45:58,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-20 05:45:58,020 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:45:58,020 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:45:58,020 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-20 05:45:58,021 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:45:58,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:45:58,021 INFO L82 PathProgramCache]: Analyzing trace with hash 1780276305, now seen corresponding path program 1 times [2020-07-20 05:45:58,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:45:58,022 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792125395] [2020-07-20 05:45:58,022 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@69f52242 [2020-07-20 05:45:58,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:45:58,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:45:58,047 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 05:45:58,048 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792125395] [2020-07-20 05:45:58,048 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 05:45:58,048 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 05:45:58,049 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009218609] [2020-07-20 05:45:58,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 05:45:58,049 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:45:58,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 05:45:58,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 05:45:58,050 INFO L87 Difference]: Start difference. First operand 140 states and 194 transitions. Second operand 3 states. [2020-07-20 05:45:58,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:45:58,072 INFO L93 Difference]: Finished difference Result 236 states and 328 transitions. [2020-07-20 05:45:58,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 05:45:58,072 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-07-20 05:45:58,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:45:58,074 INFO L225 Difference]: With dead ends: 236 [2020-07-20 05:45:58,074 INFO L226 Difference]: Without dead ends: 234 [2020-07-20 05:45:58,075 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 05:45:58,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-07-20 05:45:58,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 200. [2020-07-20 05:45:58,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-07-20 05:45:58,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 270 transitions. [2020-07-20 05:45:58,089 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 270 transitions. Word has length 18 [2020-07-20 05:45:58,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:45:58,090 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 270 transitions. [2020-07-20 05:45:58,090 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 05:45:58,090 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 270 transitions. [2020-07-20 05:45:58,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-20 05:45:58,092 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:45:58,092 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 05:45:58,092 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-20 05:45:58,092 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:45:58,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:45:58,093 INFO L82 PathProgramCache]: Analyzing trace with hash 970929679, now seen corresponding path program 1 times [2020-07-20 05:45:58,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:45:58,093 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796641573] [2020-07-20 05:45:58,094 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@69f52242 [2020-07-20 05:45:58,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:45:58,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:45:58,120 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 05:45:58,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796641573] [2020-07-20 05:45:58,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 05:45:58,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 05:45:58,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318398121] [2020-07-20 05:45:58,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 05:45:58,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:45:58,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 05:45:58,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 05:45:58,122 INFO L87 Difference]: Start difference. First operand 200 states and 270 transitions. Second operand 3 states. [2020-07-20 05:45:58,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:45:58,146 INFO L93 Difference]: Finished difference Result 444 states and 592 transitions. [2020-07-20 05:45:58,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 05:45:58,147 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-07-20 05:45:58,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:45:58,149 INFO L225 Difference]: With dead ends: 444 [2020-07-20 05:45:58,149 INFO L226 Difference]: Without dead ends: 258 [2020-07-20 05:45:58,150 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 05:45:58,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-07-20 05:45:58,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 256. [2020-07-20 05:45:58,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-07-20 05:45:58,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 326 transitions. [2020-07-20 05:45:58,167 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 326 transitions. Word has length 18 [2020-07-20 05:45:58,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:45:58,167 INFO L479 AbstractCegarLoop]: Abstraction has 256 states and 326 transitions. [2020-07-20 05:45:58,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 05:45:58,167 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 326 transitions. [2020-07-20 05:45:58,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-20 05:45:58,169 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:45:58,169 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 05:45:58,170 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-07-20 05:45:58,170 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:45:58,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:45:58,170 INFO L82 PathProgramCache]: Analyzing trace with hash -645793370, now seen corresponding path program 1 times [2020-07-20 05:45:58,171 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:45:58,171 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073482757] [2020-07-20 05:45:58,171 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@69f52242 [2020-07-20 05:45:58,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:45:58,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:45:58,208 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 05:45:58,208 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073482757] [2020-07-20 05:45:58,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 05:45:58,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 05:45:58,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859500163] [2020-07-20 05:45:58,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 05:45:58,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:45:58,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 05:45:58,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 05:45:58,210 INFO L87 Difference]: Start difference. First operand 256 states and 326 transitions. Second operand 3 states. [2020-07-20 05:45:58,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:45:58,234 INFO L93 Difference]: Finished difference Result 384 states and 484 transitions. [2020-07-20 05:45:58,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 05:45:58,234 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-07-20 05:45:58,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:45:58,236 INFO L225 Difference]: With dead ends: 384 [2020-07-20 05:45:58,236 INFO L226 Difference]: Without dead ends: 266 [2020-07-20 05:45:58,238 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 05:45:58,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-07-20 05:45:58,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 264. [2020-07-20 05:45:58,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-07-20 05:45:58,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 326 transitions. [2020-07-20 05:45:58,251 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 326 transitions. Word has length 19 [2020-07-20 05:45:58,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:45:58,251 INFO L479 AbstractCegarLoop]: Abstraction has 264 states and 326 transitions. [2020-07-20 05:45:58,252 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 05:45:58,252 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 326 transitions. [2020-07-20 05:45:58,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-20 05:45:58,254 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:45:58,254 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 05:45:58,254 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-07-20 05:45:58,254 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:45:58,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:45:58,255 INFO L82 PathProgramCache]: Analyzing trace with hash 34265000, now seen corresponding path program 1 times [2020-07-20 05:45:58,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:45:58,255 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152702313] [2020-07-20 05:45:58,256 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@69f52242 [2020-07-20 05:45:58,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:45:58,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:45:58,282 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 05:45:58,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152702313] [2020-07-20 05:45:58,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 05:45:58,284 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 05:45:58,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114772276] [2020-07-20 05:45:58,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 05:45:58,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:45:58,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 05:45:58,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 05:45:58,285 INFO L87 Difference]: Start difference. First operand 264 states and 326 transitions. Second operand 3 states. [2020-07-20 05:45:58,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:45:58,307 INFO L93 Difference]: Finished difference Result 426 states and 519 transitions. [2020-07-20 05:45:58,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 05:45:58,308 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-07-20 05:45:58,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:45:58,311 INFO L225 Difference]: With dead ends: 426 [2020-07-20 05:45:58,311 INFO L226 Difference]: Without dead ends: 424 [2020-07-20 05:45:58,312 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 05:45:58,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2020-07-20 05:45:58,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 392. [2020-07-20 05:45:58,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 392 states. [2020-07-20 05:45:58,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 470 transitions. [2020-07-20 05:45:58,329 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 470 transitions. Word has length 19 [2020-07-20 05:45:58,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:45:58,329 INFO L479 AbstractCegarLoop]: Abstraction has 392 states and 470 transitions. [2020-07-20 05:45:58,329 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 05:45:58,329 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 470 transitions. [2020-07-20 05:45:58,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-20 05:45:58,331 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 05:45:58,331 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 05:45:58,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-07-20 05:45:58,332 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 05:45:58,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 05:45:58,332 INFO L82 PathProgramCache]: Analyzing trace with hash -775081626, now seen corresponding path program 1 times [2020-07-20 05:45:58,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 05:45:58,333 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694987150] [2020-07-20 05:45:58,333 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@69f52242 [2020-07-20 05:45:58,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:45:58,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 05:45:58,355 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 05:45:58,356 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694987150] [2020-07-20 05:45:58,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 05:45:58,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 05:45:58,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217934643] [2020-07-20 05:45:58,357 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 05:45:58,357 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 05:45:58,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 05:45:58,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 05:45:58,358 INFO L87 Difference]: Start difference. First operand 392 states and 470 transitions. Second operand 3 states. [2020-07-20 05:45:58,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 05:45:58,385 INFO L93 Difference]: Finished difference Result 856 states and 998 transitions. [2020-07-20 05:45:58,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 05:45:58,386 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-07-20 05:45:58,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 05:45:58,387 INFO L225 Difference]: With dead ends: 856 [2020-07-20 05:45:58,387 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 05:45:58,389 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 05:45:58,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 05:45:58,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 05:45:58,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 05:45:58,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 05:45:58,390 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-07-20 05:45:58,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 05:45:58,390 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 05:45:58,391 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 05:45:58,391 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 05:45:58,391 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 05:45:58,391 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-07-20 05:45:58,394 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 05:45:58,417 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-20 05:45:58,418 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 05:45:58,418 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 05:45:58,418 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 05:45:58,418 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 05:45:58,418 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 05:45:58,418 INFO L268 CegarLoopResult]: For program point L64(line 64) no Hoare annotation was computed. [2020-07-20 05:45:58,419 INFO L271 CegarLoopResult]: At program point L89(lines 5 93) the Hoare annotation is: true [2020-07-20 05:45:58,419 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 4 93) no Hoare annotation was computed. [2020-07-20 05:45:58,419 INFO L268 CegarLoopResult]: For program point L73-1(lines 24 88) no Hoare annotation was computed. [2020-07-20 05:45:58,419 INFO L268 CegarLoopResult]: For program point L69(line 69) no Hoare annotation was computed. [2020-07-20 05:45:58,419 INFO L268 CegarLoopResult]: For program point L57-1(lines 24 88) no Hoare annotation was computed. [2020-07-20 05:45:58,419 INFO L268 CegarLoopResult]: For program point L53-1(lines 24 88) no Hoare annotation was computed. [2020-07-20 05:45:58,419 INFO L268 CegarLoopResult]: For program point L49-1(lines 24 88) no Hoare annotation was computed. [2020-07-20 05:45:58,420 INFO L268 CegarLoopResult]: For program point L78-1(lines 24 88) no Hoare annotation was computed. [2020-07-20 05:45:58,420 INFO L268 CegarLoopResult]: For program point L45-1(lines 24 88) no Hoare annotation was computed. [2020-07-20 05:45:58,420 INFO L268 CegarLoopResult]: For program point L74(line 74) no Hoare annotation was computed. [2020-07-20 05:45:58,420 INFO L268 CegarLoopResult]: For program point L41(lines 41 43) no Hoare annotation was computed. [2020-07-20 05:45:58,420 INFO L268 CegarLoopResult]: For program point L41-2(lines 24 88) no Hoare annotation was computed. [2020-07-20 05:45:58,420 INFO L271 CegarLoopResult]: At program point L83-1(lines 24 88) the Hoare annotation is: true [2020-07-20 05:45:58,420 INFO L268 CegarLoopResult]: For program point L79(line 79) no Hoare annotation was computed. [2020-07-20 05:45:58,421 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 4 93) no Hoare annotation was computed. [2020-07-20 05:45:58,421 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 91) no Hoare annotation was computed. [2020-07-20 05:45:58,421 INFO L268 CegarLoopResult]: For program point L63-1(lines 24 88) no Hoare annotation was computed. [2020-07-20 05:45:58,421 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 4 93) the Hoare annotation is: true [2020-07-20 05:45:58,421 INFO L268 CegarLoopResult]: For program point L26(lines 26 28) no Hoare annotation was computed. [2020-07-20 05:45:58,421 INFO L268 CegarLoopResult]: For program point L84(line 84) no Hoare annotation was computed. [2020-07-20 05:45:58,421 INFO L264 CegarLoopResult]: At program point L84-1(lines 5 93) the Hoare annotation is: false [2020-07-20 05:45:58,422 INFO L268 CegarLoopResult]: For program point L68-1(lines 24 88) no Hoare annotation was computed. [2020-07-20 05:45:58,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 05:45:58 BoogieIcfgContainer [2020-07-20 05:45:58,435 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 05:45:58,438 INFO L168 Benchmark]: Toolchain (without parser) took 2618.17 ms. Allocated memory was 145.8 MB in the beginning and 235.4 MB in the end (delta: 89.7 MB). Free memory was 102.7 MB in the beginning and 146.9 MB in the end (delta: -44.2 MB). Peak memory consumption was 45.5 MB. Max. memory is 7.1 GB. [2020-07-20 05:45:58,439 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 145.8 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-20 05:45:58,439 INFO L168 Benchmark]: CACSL2BoogieTranslator took 321.28 ms. Allocated memory is still 145.8 MB. Free memory was 102.5 MB in the beginning and 92.5 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-07-20 05:45:58,440 INFO L168 Benchmark]: Boogie Preprocessor took 176.31 ms. Allocated memory was 145.8 MB in the beginning and 205.0 MB in the end (delta: 59.2 MB). Free memory was 92.5 MB in the beginning and 183.4 MB in the end (delta: -91.0 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2020-07-20 05:45:58,441 INFO L168 Benchmark]: RCFGBuilder took 480.23 ms. Allocated memory is still 205.0 MB. Free memory was 183.4 MB in the beginning and 168.7 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. [2020-07-20 05:45:58,442 INFO L168 Benchmark]: TraceAbstraction took 1630.54 ms. Allocated memory was 205.0 MB in the beginning and 235.4 MB in the end (delta: 30.4 MB). Free memory was 168.0 MB in the beginning and 146.9 MB in the end (delta: 21.1 MB). Peak memory consumption was 51.5 MB. Max. memory is 7.1 GB. [2020-07-20 05:45:58,446 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 145.8 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 321.28 ms. Allocated memory is still 145.8 MB. Free memory was 102.5 MB in the beginning and 92.5 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 176.31 ms. Allocated memory was 145.8 MB in the beginning and 205.0 MB in the end (delta: 59.2 MB). Free memory was 92.5 MB in the beginning and 183.4 MB in the end (delta: -91.0 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 480.23 ms. Allocated memory is still 205.0 MB. Free memory was 183.4 MB in the beginning and 168.7 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1630.54 ms. Allocated memory was 205.0 MB in the beginning and 235.4 MB in the end (delta: 30.4 MB). Free memory was 168.0 MB in the beginning and 146.9 MB in the end (delta: 21.1 MB). Peak memory consumption was 51.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 91]: 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: 24]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.5s, OverallIterations: 14, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 654 SDtfs, 285 SDslu, 428 SDs, 0 SdLazy, 75 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 70 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=392occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 14 MinimizatonAttempts, 138 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 42 NumberOfFragments, 7 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 240 NumberOfCodeBlocks, 240 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 226 ConstructedInterpolants, 0 QuantifiedInterpolants, 6424 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 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...