/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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/locks/test_locks_5.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 13:25:02,739 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 13:25:02,744 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 13:25:02,787 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 13:25:02,788 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 13:25:02,796 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 13:25:02,799 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 13:25:02,804 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 13:25:02,807 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 13:25:02,810 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 13:25:02,811 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 13:25:02,812 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 13:25:02,812 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 13:25:02,815 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 13:25:02,817 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 13:25:02,819 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 13:25:02,820 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 13:25:02,822 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 13:25:02,824 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 13:25:02,833 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 13:25:02,836 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 13:25:02,837 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 13:25:02,838 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 13:25:02,839 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 13:25:02,851 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 13:25:02,860 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 13:25:02,861 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 13:25:02,862 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 13:25:02,863 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-04 13:25:02,890 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 13:25:02,890 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 13:25:02,892 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-04 13:25:02,892 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-04 13:25:02,892 INFO L138 SettingsManager]: * Use SBE=true [2020-09-04 13:25:02,893 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 13:25:02,893 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 13:25:02,893 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 13:25:02,893 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 13:25:02,894 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 13:25:02,894 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 13:25:02,894 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 13:25:02,894 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 13:25:02,894 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 13:25:02,895 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 13:25:02,895 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 13:25:02,895 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 13:25:02,895 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 13:25:02,896 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-04 13:25:02,896 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 13:25:02,896 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 13:25:02,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 13:25:02,897 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 13:25:02,897 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-04 13:25:02,897 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-04 13:25:02,897 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-04 13:25:02,897 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-04 13:25:02,898 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 13:25:02,898 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-04 13:25:02,898 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-04 13:25:03,363 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 13:25:03,391 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 13:25:03,397 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 13:25:03,399 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 13:25:03,400 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 13:25:03,401 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_5.c [2020-09-04 13:25:03,497 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/56c686a41/a81707b89b8d44b2838a042e937f25ae/FLAGa2a8d84d0 [2020-09-04 13:25:04,080 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 13:25:04,081 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/locks/test_locks_5.c [2020-09-04 13:25:04,095 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/56c686a41/a81707b89b8d44b2838a042e937f25ae/FLAGa2a8d84d0 [2020-09-04 13:25:04,407 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/56c686a41/a81707b89b8d44b2838a042e937f25ae [2020-09-04 13:25:04,423 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 13:25:04,425 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 13:25:04,429 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 13:25:04,429 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 13:25:04,434 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 13:25:04,435 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:25:04" (1/1) ... [2020-09-04 13:25:04,440 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55e164ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:25:04, skipping insertion in model container [2020-09-04 13:25:04,441 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:25:04" (1/1) ... [2020-09-04 13:25:04,451 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 13:25:04,482 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 13:25:04,709 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:25:04,714 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 13:25:04,736 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:25:04,751 INFO L208 MainTranslator]: Completed translation [2020-09-04 13:25:04,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:25:04 WrapperNode [2020-09-04 13:25:04,752 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 13:25:04,753 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 13:25:04,753 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 13:25:04,753 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 13:25:04,766 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:25:04" (1/1) ... [2020-09-04 13:25:04,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:25:04" (1/1) ... [2020-09-04 13:25:04,773 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:25:04" (1/1) ... [2020-09-04 13:25:04,774 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:25:04" (1/1) ... [2020-09-04 13:25:04,779 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:25:04" (1/1) ... [2020-09-04 13:25:04,874 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:25:04" (1/1) ... [2020-09-04 13:25:04,876 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:25:04" (1/1) ... [2020-09-04 13:25:04,881 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 13:25:04,884 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 13:25:04,884 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 13:25:04,884 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 13:25:04,887 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:25:04" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 13:25:04,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 13:25:04,975 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 13:25:04,975 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 13:25:04,975 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 13:25:04,975 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 13:25:04,976 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 13:25:04,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 13:25:04,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 13:25:05,274 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 13:25:05,274 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-04 13:25:05,300 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:25:05 BoogieIcfgContainer [2020-09-04 13:25:05,301 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 13:25:05,302 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 13:25:05,303 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 13:25:05,313 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 13:25:05,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 01:25:04" (1/3) ... [2020-09-04 13:25:05,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a1638f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:25:05, skipping insertion in model container [2020-09-04 13:25:05,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:25:04" (2/3) ... [2020-09-04 13:25:05,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a1638f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:25:05, skipping insertion in model container [2020-09-04 13:25:05,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:25:05" (3/3) ... [2020-09-04 13:25:05,318 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_5.c [2020-09-04 13:25:05,330 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-04 13:25:05,354 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 13:25:05,382 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 13:25:05,411 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 13:25:05,411 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 13:25:05,411 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-04 13:25:05,412 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 13:25:05,412 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 13:25:05,412 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 13:25:05,413 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 13:25:05,413 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 13:25:05,435 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-09-04 13:25:05,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-04 13:25:05,442 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:25:05,443 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:25:05,444 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:25:05,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:25:05,450 INFO L82 PathProgramCache]: Analyzing trace with hash 316328318, now seen corresponding path program 1 times [2020-09-04 13:25:05,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:25:05,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245625046] [2020-09-04 13:25:05,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:25:05,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:05,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:25:05,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:05,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:25:05,671 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245625046] [2020-09-04 13:25:05,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:25:05,672 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 13:25:05,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380200051] [2020-09-04 13:25:05,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 13:25:05,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:25:05,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 13:25:05,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:25:05,697 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 3 states. [2020-09-04 13:25:05,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:25:05,760 INFO L93 Difference]: Finished difference Result 57 states and 90 transitions. [2020-09-04 13:25:05,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 13:25:05,762 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-09-04 13:25:05,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:25:05,777 INFO L225 Difference]: With dead ends: 57 [2020-09-04 13:25:05,778 INFO L226 Difference]: Without dead ends: 42 [2020-09-04 13:25:05,782 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:25:05,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-04 13:25:05,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 30. [2020-09-04 13:25:05,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-04 13:25:05,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 49 transitions. [2020-09-04 13:25:05,830 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 49 transitions. Word has length 15 [2020-09-04 13:25:05,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:25:05,830 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 49 transitions. [2020-09-04 13:25:05,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 13:25:05,830 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 49 transitions. [2020-09-04 13:25:05,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-04 13:25:05,831 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:25:05,832 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:25:05,832 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 13:25:05,832 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:25:05,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:25:05,833 INFO L82 PathProgramCache]: Analyzing trace with hash -493018308, now seen corresponding path program 1 times [2020-09-04 13:25:05,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:25:05,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889277323] [2020-09-04 13:25:05,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:25:05,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:05,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:25:05,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:05,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:25:05,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889277323] [2020-09-04 13:25:05,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:25:05,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 13:25:05,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399967637] [2020-09-04 13:25:05,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 13:25:05,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:25:05,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 13:25:05,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:25:05,911 INFO L87 Difference]: Start difference. First operand 30 states and 49 transitions. Second operand 3 states. [2020-09-04 13:25:05,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:25:05,953 INFO L93 Difference]: Finished difference Result 67 states and 112 transitions. [2020-09-04 13:25:05,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 13:25:05,954 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-09-04 13:25:05,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:25:05,955 INFO L225 Difference]: With dead ends: 67 [2020-09-04 13:25:05,955 INFO L226 Difference]: Without dead ends: 42 [2020-09-04 13:25:05,959 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:25:05,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-04 13:25:05,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-09-04 13:25:05,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-04 13:25:05,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 65 transitions. [2020-09-04 13:25:05,974 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 65 transitions. Word has length 15 [2020-09-04 13:25:05,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:25:05,974 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 65 transitions. [2020-09-04 13:25:05,974 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 13:25:05,975 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 65 transitions. [2020-09-04 13:25:05,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-04 13:25:05,977 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:25:05,977 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:25:05,977 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 13:25:05,977 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:25:05,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:25:05,979 INFO L82 PathProgramCache]: Analyzing trace with hash 1216458266, now seen corresponding path program 1 times [2020-09-04 13:25:05,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:25:05,980 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120980493] [2020-09-04 13:25:05,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:25:06,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:06,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:25:06,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:06,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:25:06,047 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120980493] [2020-09-04 13:25:06,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:25:06,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 13:25:06,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420625599] [2020-09-04 13:25:06,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 13:25:06,049 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:25:06,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 13:25:06,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:25:06,050 INFO L87 Difference]: Start difference. First operand 40 states and 65 transitions. Second operand 3 states. [2020-09-04 13:25:06,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:25:06,082 INFO L93 Difference]: Finished difference Result 63 states and 99 transitions. [2020-09-04 13:25:06,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 13:25:06,083 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-09-04 13:25:06,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:25:06,084 INFO L225 Difference]: With dead ends: 63 [2020-09-04 13:25:06,085 INFO L226 Difference]: Without dead ends: 45 [2020-09-04 13:25:06,086 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:25:06,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-09-04 13:25:06,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2020-09-04 13:25:06,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-09-04 13:25:06,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 67 transitions. [2020-09-04 13:25:06,094 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 67 transitions. Word has length 16 [2020-09-04 13:25:06,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:25:06,094 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 67 transitions. [2020-09-04 13:25:06,095 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 13:25:06,095 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 67 transitions. [2020-09-04 13:25:06,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-04 13:25:06,096 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:25:06,096 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:25:06,097 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 13:25:06,097 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:25:06,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:25:06,097 INFO L82 PathProgramCache]: Analyzing trace with hash 1896516636, now seen corresponding path program 1 times [2020-09-04 13:25:06,098 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:25:06,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502536503] [2020-09-04 13:25:06,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:25:06,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:06,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:25:06,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:06,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:25:06,141 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502536503] [2020-09-04 13:25:06,141 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:25:06,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 13:25:06,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730764303] [2020-09-04 13:25:06,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 13:25:06,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:25:06,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 13:25:06,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:25:06,143 INFO L87 Difference]: Start difference. First operand 43 states and 67 transitions. Second operand 3 states. [2020-09-04 13:25:06,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:25:06,169 INFO L93 Difference]: Finished difference Result 76 states and 120 transitions. [2020-09-04 13:25:06,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 13:25:06,170 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-09-04 13:25:06,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:25:06,172 INFO L225 Difference]: With dead ends: 76 [2020-09-04 13:25:06,172 INFO L226 Difference]: Without dead ends: 74 [2020-09-04 13:25:06,173 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:25:06,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-09-04 13:25:06,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 56. [2020-09-04 13:25:06,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-09-04 13:25:06,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 88 transitions. [2020-09-04 13:25:06,192 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 88 transitions. Word has length 16 [2020-09-04 13:25:06,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:25:06,192 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 88 transitions. [2020-09-04 13:25:06,193 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 13:25:06,193 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 88 transitions. [2020-09-04 13:25:06,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-04 13:25:06,194 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:25:06,194 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:25:06,194 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 13:25:06,195 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:25:06,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:25:06,195 INFO L82 PathProgramCache]: Analyzing trace with hash 1087170010, now seen corresponding path program 1 times [2020-09-04 13:25:06,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:25:06,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093774142] [2020-09-04 13:25:06,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:25:06,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:06,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:25:06,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:06,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:25:06,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093774142] [2020-09-04 13:25:06,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:25:06,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 13:25:06,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52305831] [2020-09-04 13:25:06,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 13:25:06,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:25:06,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 13:25:06,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:25:06,236 INFO L87 Difference]: Start difference. First operand 56 states and 88 transitions. Second operand 3 states. [2020-09-04 13:25:06,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:25:06,259 INFO L93 Difference]: Finished difference Result 124 states and 198 transitions. [2020-09-04 13:25:06,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 13:25:06,260 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-09-04 13:25:06,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:25:06,261 INFO L225 Difference]: With dead ends: 124 [2020-09-04 13:25:06,261 INFO L226 Difference]: Without dead ends: 76 [2020-09-04 13:25:06,262 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:25:06,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-09-04 13:25:06,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2020-09-04 13:25:06,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-09-04 13:25:06,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 114 transitions. [2020-09-04 13:25:06,272 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 114 transitions. Word has length 16 [2020-09-04 13:25:06,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:25:06,273 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 114 transitions. [2020-09-04 13:25:06,273 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 13:25:06,273 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 114 transitions. [2020-09-04 13:25:06,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-04 13:25:06,274 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:25:06,274 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:25:06,274 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 13:25:06,275 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:25:06,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:25:06,275 INFO L82 PathProgramCache]: Analyzing trace with hash -1337311087, now seen corresponding path program 1 times [2020-09-04 13:25:06,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:25:06,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455825143] [2020-09-04 13:25:06,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:25:06,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:06,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:25:06,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:06,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:25:06,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455825143] [2020-09-04 13:25:06,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:25:06,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 13:25:06,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989664836] [2020-09-04 13:25:06,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 13:25:06,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:25:06,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 13:25:06,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:25:06,314 INFO L87 Difference]: Start difference. First operand 74 states and 114 transitions. Second operand 3 states. [2020-09-04 13:25:06,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:25:06,333 INFO L93 Difference]: Finished difference Result 111 states and 169 transitions. [2020-09-04 13:25:06,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 13:25:06,334 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-09-04 13:25:06,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:25:06,335 INFO L225 Difference]: With dead ends: 111 [2020-09-04 13:25:06,335 INFO L226 Difference]: Without dead ends: 78 [2020-09-04 13:25:06,336 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:25:06,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-09-04 13:25:06,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2020-09-04 13:25:06,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-09-04 13:25:06,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 114 transitions. [2020-09-04 13:25:06,347 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 114 transitions. Word has length 17 [2020-09-04 13:25:06,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:25:06,347 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 114 transitions. [2020-09-04 13:25:06,348 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 13:25:06,348 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 114 transitions. [2020-09-04 13:25:06,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-04 13:25:06,349 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:25:06,349 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:25:06,350 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 13:25:06,350 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:25:06,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:25:06,350 INFO L82 PathProgramCache]: Analyzing trace with hash -657252717, now seen corresponding path program 1 times [2020-09-04 13:25:06,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:25:06,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053126948] [2020-09-04 13:25:06,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:25:06,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:06,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:25:06,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:06,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:25:06,386 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053126948] [2020-09-04 13:25:06,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:25:06,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 13:25:06,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337983687] [2020-09-04 13:25:06,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 13:25:06,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:25:06,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 13:25:06,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:25:06,388 INFO L87 Difference]: Start difference. First operand 76 states and 114 transitions. Second operand 3 states. [2020-09-04 13:25:06,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:25:06,408 INFO L93 Difference]: Finished difference Result 132 states and 200 transitions. [2020-09-04 13:25:06,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 13:25:06,409 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-09-04 13:25:06,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:25:06,411 INFO L225 Difference]: With dead ends: 132 [2020-09-04 13:25:06,411 INFO L226 Difference]: Without dead ends: 130 [2020-09-04 13:25:06,412 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:25:06,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-09-04 13:25:06,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 104. [2020-09-04 13:25:06,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-09-04 13:25:06,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 154 transitions. [2020-09-04 13:25:06,426 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 154 transitions. Word has length 17 [2020-09-04 13:25:06,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:25:06,426 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 154 transitions. [2020-09-04 13:25:06,426 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 13:25:06,427 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 154 transitions. [2020-09-04 13:25:06,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-04 13:25:06,428 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:25:06,428 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:25:06,428 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-04 13:25:06,429 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:25:06,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:25:06,429 INFO L82 PathProgramCache]: Analyzing trace with hash -1466599343, now seen corresponding path program 1 times [2020-09-04 13:25:06,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:25:06,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236814380] [2020-09-04 13:25:06,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:25:06,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:06,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:25:06,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:06,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:25:06,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236814380] [2020-09-04 13:25:06,460 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:25:06,460 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 13:25:06,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100817259] [2020-09-04 13:25:06,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 13:25:06,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:25:06,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 13:25:06,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:25:06,462 INFO L87 Difference]: Start difference. First operand 104 states and 154 transitions. Second operand 3 states. [2020-09-04 13:25:06,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:25:06,485 INFO L93 Difference]: Finished difference Result 232 states and 344 transitions. [2020-09-04 13:25:06,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 13:25:06,485 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-09-04 13:25:06,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:25:06,487 INFO L225 Difference]: With dead ends: 232 [2020-09-04 13:25:06,487 INFO L226 Difference]: Without dead ends: 138 [2020-09-04 13:25:06,489 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:25:06,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-09-04 13:25:06,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 136. [2020-09-04 13:25:06,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-09-04 13:25:06,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 194 transitions. [2020-09-04 13:25:06,505 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 194 transitions. Word has length 17 [2020-09-04 13:25:06,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:25:06,506 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 194 transitions. [2020-09-04 13:25:06,506 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 13:25:06,506 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 194 transitions. [2020-09-04 13:25:06,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-04 13:25:06,508 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:25:06,508 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:25:06,508 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-04 13:25:06,508 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:25:06,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:25:06,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1100217935, now seen corresponding path program 1 times [2020-09-04 13:25:06,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:25:06,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011846031] [2020-09-04 13:25:06,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:25:06,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:06,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:25:06,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:06,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:25:06,539 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011846031] [2020-09-04 13:25:06,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:25:06,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 13:25:06,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170174781] [2020-09-04 13:25:06,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 13:25:06,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:25:06,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 13:25:06,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:25:06,542 INFO L87 Difference]: Start difference. First operand 136 states and 194 transitions. Second operand 3 states. [2020-09-04 13:25:06,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:25:06,585 INFO L93 Difference]: Finished difference Result 204 states and 288 transitions. [2020-09-04 13:25:06,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 13:25:06,586 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-09-04 13:25:06,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:25:06,587 INFO L225 Difference]: With dead ends: 204 [2020-09-04 13:25:06,588 INFO L226 Difference]: Without dead ends: 142 [2020-09-04 13:25:06,589 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:25:06,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-09-04 13:25:06,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 140. [2020-09-04 13:25:06,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-09-04 13:25:06,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 194 transitions. [2020-09-04 13:25:06,603 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 194 transitions. Word has length 18 [2020-09-04 13:25:06,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:25:06,603 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 194 transitions. [2020-09-04 13:25:06,603 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 13:25:06,604 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 194 transitions. [2020-09-04 13:25:06,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-04 13:25:06,605 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:25:06,605 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:25:06,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-04 13:25:06,606 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:25:06,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:25:06,606 INFO L82 PathProgramCache]: Analyzing trace with hash 1780276305, now seen corresponding path program 1 times [2020-09-04 13:25:06,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:25:06,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141997340] [2020-09-04 13:25:06,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:25:06,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:06,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:25:06,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:06,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:25:06,633 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141997340] [2020-09-04 13:25:06,634 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:25:06,634 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 13:25:06,634 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571501301] [2020-09-04 13:25:06,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 13:25:06,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:25:06,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 13:25:06,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:25:06,636 INFO L87 Difference]: Start difference. First operand 140 states and 194 transitions. Second operand 3 states. [2020-09-04 13:25:06,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:25:06,657 INFO L93 Difference]: Finished difference Result 236 states and 328 transitions. [2020-09-04 13:25:06,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 13:25:06,658 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-09-04 13:25:06,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:25:06,659 INFO L225 Difference]: With dead ends: 236 [2020-09-04 13:25:06,660 INFO L226 Difference]: Without dead ends: 234 [2020-09-04 13:25:06,660 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:25:06,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-09-04 13:25:06,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 200. [2020-09-04 13:25:06,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-09-04 13:25:06,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 270 transitions. [2020-09-04 13:25:06,675 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 270 transitions. Word has length 18 [2020-09-04 13:25:06,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:25:06,676 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 270 transitions. [2020-09-04 13:25:06,676 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 13:25:06,676 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 270 transitions. [2020-09-04 13:25:06,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-04 13:25:06,678 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:25:06,678 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:25:06,678 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-04 13:25:06,679 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:25:06,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:25:06,679 INFO L82 PathProgramCache]: Analyzing trace with hash 970929679, now seen corresponding path program 1 times [2020-09-04 13:25:06,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:25:06,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897773243] [2020-09-04 13:25:06,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:25:06,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:06,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:25:06,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:06,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:25:06,727 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897773243] [2020-09-04 13:25:06,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:25:06,727 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 13:25:06,727 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818772798] [2020-09-04 13:25:06,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 13:25:06,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:25:06,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 13:25:06,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:25:06,729 INFO L87 Difference]: Start difference. First operand 200 states and 270 transitions. Second operand 3 states. [2020-09-04 13:25:06,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:25:06,756 INFO L93 Difference]: Finished difference Result 444 states and 592 transitions. [2020-09-04 13:25:06,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 13:25:06,757 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-09-04 13:25:06,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:25:06,759 INFO L225 Difference]: With dead ends: 444 [2020-09-04 13:25:06,759 INFO L226 Difference]: Without dead ends: 258 [2020-09-04 13:25:06,761 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:25:06,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-09-04 13:25:06,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 256. [2020-09-04 13:25:06,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-09-04 13:25:06,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 326 transitions. [2020-09-04 13:25:06,779 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 326 transitions. Word has length 18 [2020-09-04 13:25:06,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:25:06,780 INFO L479 AbstractCegarLoop]: Abstraction has 256 states and 326 transitions. [2020-09-04 13:25:06,780 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 13:25:06,780 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 326 transitions. [2020-09-04 13:25:06,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-04 13:25:06,782 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:25:06,782 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:25:06,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-04 13:25:06,783 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:25:06,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:25:06,783 INFO L82 PathProgramCache]: Analyzing trace with hash -645793370, now seen corresponding path program 1 times [2020-09-04 13:25:06,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:25:06,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094546246] [2020-09-04 13:25:06,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:25:06,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:06,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:25:06,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:06,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:25:06,818 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094546246] [2020-09-04 13:25:06,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:25:06,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 13:25:06,819 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927998798] [2020-09-04 13:25:06,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 13:25:06,820 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:25:06,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 13:25:06,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:25:06,820 INFO L87 Difference]: Start difference. First operand 256 states and 326 transitions. Second operand 3 states. [2020-09-04 13:25:06,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:25:06,850 INFO L93 Difference]: Finished difference Result 384 states and 484 transitions. [2020-09-04 13:25:06,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 13:25:06,851 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-09-04 13:25:06,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:25:06,853 INFO L225 Difference]: With dead ends: 384 [2020-09-04 13:25:06,853 INFO L226 Difference]: Without dead ends: 266 [2020-09-04 13:25:06,854 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:25:06,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-09-04 13:25:06,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 264. [2020-09-04 13:25:06,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-09-04 13:25:06,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 326 transitions. [2020-09-04 13:25:06,870 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 326 transitions. Word has length 19 [2020-09-04 13:25:06,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:25:06,870 INFO L479 AbstractCegarLoop]: Abstraction has 264 states and 326 transitions. [2020-09-04 13:25:06,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 13:25:06,871 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 326 transitions. [2020-09-04 13:25:06,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-04 13:25:06,873 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:25:06,873 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:25:06,873 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-04 13:25:06,873 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:25:06,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:25:06,874 INFO L82 PathProgramCache]: Analyzing trace with hash 34265000, now seen corresponding path program 1 times [2020-09-04 13:25:06,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:25:06,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567088979] [2020-09-04 13:25:06,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:25:06,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:06,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:25:06,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:06,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:25:06,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567088979] [2020-09-04 13:25:06,903 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:25:06,903 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 13:25:06,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235049733] [2020-09-04 13:25:06,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 13:25:06,904 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:25:06,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 13:25:06,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:25:06,904 INFO L87 Difference]: Start difference. First operand 264 states and 326 transitions. Second operand 3 states. [2020-09-04 13:25:06,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:25:06,927 INFO L93 Difference]: Finished difference Result 426 states and 519 transitions. [2020-09-04 13:25:06,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 13:25:06,928 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-09-04 13:25:06,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:25:06,930 INFO L225 Difference]: With dead ends: 426 [2020-09-04 13:25:06,930 INFO L226 Difference]: Without dead ends: 424 [2020-09-04 13:25:06,931 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:25:06,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2020-09-04 13:25:06,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 392. [2020-09-04 13:25:06,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 392 states. [2020-09-04 13:25:06,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 470 transitions. [2020-09-04 13:25:06,947 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 470 transitions. Word has length 19 [2020-09-04 13:25:06,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:25:06,947 INFO L479 AbstractCegarLoop]: Abstraction has 392 states and 470 transitions. [2020-09-04 13:25:06,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 13:25:06,947 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 470 transitions. [2020-09-04 13:25:06,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-04 13:25:06,950 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:25:06,950 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 13:25:06,950 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-04 13:25:06,950 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:25:06,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:25:06,951 INFO L82 PathProgramCache]: Analyzing trace with hash -775081626, now seen corresponding path program 1 times [2020-09-04 13:25:06,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:25:06,951 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208452375] [2020-09-04 13:25:06,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:25:06,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:06,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:25:06,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:25:06,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:25:06,989 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208452375] [2020-09-04 13:25:06,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:25:06,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 13:25:06,990 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858418129] [2020-09-04 13:25:06,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 13:25:06,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:25:06,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 13:25:06,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:25:06,991 INFO L87 Difference]: Start difference. First operand 392 states and 470 transitions. Second operand 3 states. [2020-09-04 13:25:07,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:25:07,018 INFO L93 Difference]: Finished difference Result 856 states and 998 transitions. [2020-09-04 13:25:07,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 13:25:07,018 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-09-04 13:25:07,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:25:07,019 INFO L225 Difference]: With dead ends: 856 [2020-09-04 13:25:07,019 INFO L226 Difference]: Without dead ends: 0 [2020-09-04 13:25:07,023 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 13:25:07,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-04 13:25:07,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-04 13:25:07,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-04 13:25:07,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-04 13:25:07,024 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-09-04 13:25:07,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:25:07,024 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-04 13:25:07,024 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 13:25:07,024 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-04 13:25:07,024 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-04 13:25:07,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-04 13:25:07,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-04 13:25:07,052 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-04 13:25:07,053 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-04 13:25:07,053 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-04 13:25:07,053 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-04 13:25:07,053 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-04 13:25:07,053 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-04 13:25:07,053 INFO L268 CegarLoopResult]: For program point L64(line 64) no Hoare annotation was computed. [2020-09-04 13:25:07,054 INFO L271 CegarLoopResult]: At program point L89(lines 5 93) the Hoare annotation is: true [2020-09-04 13:25:07,054 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 4 93) no Hoare annotation was computed. [2020-09-04 13:25:07,054 INFO L268 CegarLoopResult]: For program point L73-1(lines 24 88) no Hoare annotation was computed. [2020-09-04 13:25:07,054 INFO L268 CegarLoopResult]: For program point L69(line 69) no Hoare annotation was computed. [2020-09-04 13:25:07,054 INFO L268 CegarLoopResult]: For program point L57-1(lines 24 88) no Hoare annotation was computed. [2020-09-04 13:25:07,054 INFO L268 CegarLoopResult]: For program point L53-1(lines 24 88) no Hoare annotation was computed. [2020-09-04 13:25:07,055 INFO L268 CegarLoopResult]: For program point L49-1(lines 24 88) no Hoare annotation was computed. [2020-09-04 13:25:07,055 INFO L268 CegarLoopResult]: For program point L78-1(lines 24 88) no Hoare annotation was computed. [2020-09-04 13:25:07,055 INFO L268 CegarLoopResult]: For program point L45-1(lines 24 88) no Hoare annotation was computed. [2020-09-04 13:25:07,055 INFO L268 CegarLoopResult]: For program point L74(line 74) no Hoare annotation was computed. [2020-09-04 13:25:07,055 INFO L268 CegarLoopResult]: For program point L41(lines 41 43) no Hoare annotation was computed. [2020-09-04 13:25:07,055 INFO L268 CegarLoopResult]: For program point L41-2(lines 24 88) no Hoare annotation was computed. [2020-09-04 13:25:07,055 INFO L271 CegarLoopResult]: At program point L83-1(lines 24 88) the Hoare annotation is: true [2020-09-04 13:25:07,056 INFO L268 CegarLoopResult]: For program point L79(line 79) no Hoare annotation was computed. [2020-09-04 13:25:07,056 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 4 93) no Hoare annotation was computed. [2020-09-04 13:25:07,056 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 91) no Hoare annotation was computed. [2020-09-04 13:25:07,056 INFO L268 CegarLoopResult]: For program point L63-1(lines 24 88) no Hoare annotation was computed. [2020-09-04 13:25:07,056 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 4 93) the Hoare annotation is: true [2020-09-04 13:25:07,056 INFO L268 CegarLoopResult]: For program point L26(lines 26 28) no Hoare annotation was computed. [2020-09-04 13:25:07,057 INFO L268 CegarLoopResult]: For program point L84(line 84) no Hoare annotation was computed. [2020-09-04 13:25:07,057 INFO L264 CegarLoopResult]: At program point L84-1(lines 5 93) the Hoare annotation is: false [2020-09-04 13:25:07,057 INFO L268 CegarLoopResult]: For program point L68-1(lines 24 88) no Hoare annotation was computed. [2020-09-04 13:25:07,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 01:25:07 BoogieIcfgContainer [2020-09-04 13:25:07,071 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 13:25:07,075 INFO L168 Benchmark]: Toolchain (without parser) took 2648.97 ms. Allocated memory was 137.9 MB in the beginning and 230.7 MB in the end (delta: 92.8 MB). Free memory was 101.3 MB in the beginning and 143.4 MB in the end (delta: -42.0 MB). Peak memory consumption was 50.8 MB. Max. memory is 7.1 GB. [2020-09-04 13:25:07,076 INFO L168 Benchmark]: CDTParser took 0.59 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 13:25:07,077 INFO L168 Benchmark]: CACSL2BoogieTranslator took 323.12 ms. Allocated memory is still 137.9 MB. Free memory was 101.1 MB in the beginning and 91.2 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-09-04 13:25:07,078 INFO L168 Benchmark]: Boogie Preprocessor took 128.69 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 91.2 MB in the beginning and 179.4 MB in the end (delta: -88.2 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. [2020-09-04 13:25:07,079 INFO L168 Benchmark]: RCFGBuilder took 417.25 ms. Allocated memory is still 200.8 MB. Free memory was 179.4 MB in the beginning and 163.9 MB in the end (delta: 15.5 MB). Peak memory consumption was 15.5 MB. Max. memory is 7.1 GB. [2020-09-04 13:25:07,080 INFO L168 Benchmark]: TraceAbstraction took 1769.13 ms. Allocated memory was 200.8 MB in the beginning and 230.7 MB in the end (delta: 29.9 MB). Free memory was 163.2 MB in the beginning and 143.4 MB in the end (delta: 19.8 MB). Peak memory consumption was 49.7 MB. Max. memory is 7.1 GB. [2020-09-04 13:25:07,083 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.59 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 323.12 ms. Allocated memory is still 137.9 MB. Free memory was 101.1 MB in the beginning and 91.2 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 128.69 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 91.2 MB in the beginning and 179.4 MB in the end (delta: -88.2 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 417.25 ms. Allocated memory is still 200.8 MB. Free memory was 179.4 MB in the beginning and 163.9 MB in the end (delta: 15.5 MB). Peak memory consumption was 15.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1769.13 ms. Allocated memory was 200.8 MB in the beginning and 230.7 MB in the end (delta: 29.9 MB). Free memory was 163.2 MB in the beginning and 143.4 MB in the end (delta: 19.8 MB). Peak memory consumption was 49.7 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: 1.6s, 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, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 70 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s 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...