/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/AutomizerBplInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-MCR.epf -i ../../../trunk/examples/concurrent/bpl/mcr/example_13.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.25-abd8500 [2020-01-16 23:25:19,654 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-01-16 23:25:19,656 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-01-16 23:25:19,670 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-01-16 23:25:19,671 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-01-16 23:25:19,672 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-01-16 23:25:19,673 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-01-16 23:25:19,675 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-01-16 23:25:19,677 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-01-16 23:25:19,678 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-01-16 23:25:19,679 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-01-16 23:25:19,680 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-01-16 23:25:19,680 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-01-16 23:25:19,681 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-01-16 23:25:19,682 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-01-16 23:25:19,683 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-01-16 23:25:19,684 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-01-16 23:25:19,685 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-01-16 23:25:19,686 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-01-16 23:25:19,688 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-01-16 23:25:19,689 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-01-16 23:25:19,690 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-01-16 23:25:19,691 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-01-16 23:25:19,692 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-01-16 23:25:19,694 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-01-16 23:25:19,702 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-01-16 23:25:19,703 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-01-16 23:25:19,703 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-01-16 23:25:19,704 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe-MCR.epf [2020-01-16 23:25:19,722 INFO L113 SettingsManager]: Loading preferences was successful [2020-01-16 23:25:19,723 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-01-16 23:25:19,725 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-01-16 23:25:19,725 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-01-16 23:25:19,725 INFO L138 SettingsManager]: * Use SBE=true [2020-01-16 23:25:19,725 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-01-16 23:25:19,726 INFO L138 SettingsManager]: * sizeof long=4 [2020-01-16 23:25:19,726 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-01-16 23:25:19,726 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-01-16 23:25:19,726 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-01-16 23:25:19,726 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-01-16 23:25:19,726 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-01-16 23:25:19,727 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-01-16 23:25:19,727 INFO L138 SettingsManager]: * sizeof long double=12 [2020-01-16 23:25:19,727 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-01-16 23:25:19,727 INFO L138 SettingsManager]: * Use constant arrays=true [2020-01-16 23:25:19,727 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-01-16 23:25:19,728 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-01-16 23:25:19,728 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-01-16 23:25:19,728 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-01-16 23:25:19,728 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-01-16 23:25:19,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-01-16 23:25:19,729 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-01-16 23:25:19,729 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-01-16 23:25:19,729 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-01-16 23:25:19,729 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-01-16 23:25:19,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-01-16 23:25:19,729 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-01-16 23:25:19,730 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-01-16 23:25:19,730 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-01-16 23:25:19,730 INFO L138 SettingsManager]: * Interpolant automaton=MCR [2020-01-16 23:25:19,730 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-01-16 23:25:20,045 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-01-16 23:25:20,063 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-01-16 23:25:20,067 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-01-16 23:25:20,068 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2020-01-16 23:25:20,069 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2020-01-16 23:25:20,070 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_13.bpl [2020-01-16 23:25:20,070 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_13.bpl' [2020-01-16 23:25:20,118 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-01-16 23:25:20,120 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-01-16 23:25:20,121 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-01-16 23:25:20,121 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-01-16 23:25:20,121 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-01-16 23:25:20,137 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 11:25:20" (1/1) ... [2020-01-16 23:25:20,148 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 11:25:20" (1/1) ... [2020-01-16 23:25:20,158 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-01-16 23:25:20,158 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-01-16 23:25:20,159 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-01-16 23:25:20,159 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-01-16 23:25:20,171 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 11:25:20" (1/1) ... [2020-01-16 23:25:20,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 11:25:20" (1/1) ... [2020-01-16 23:25:20,173 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 11:25:20" (1/1) ... [2020-01-16 23:25:20,173 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 11:25:20" (1/1) ... [2020-01-16 23:25:20,181 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 11:25:20" (1/1) ... [2020-01-16 23:25:20,182 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 11:25:20" (1/1) ... [2020-01-16 23:25:20,184 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 11:25:20" (1/1) ... [2020-01-16 23:25:20,186 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-01-16 23:25:20,187 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-01-16 23:25:20,187 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-01-16 23:25:20,187 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-01-16 23:25:20,191 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 11:25:20" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-01-16 23:25:20,263 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2020-01-16 23:25:20,263 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2020-01-16 23:25:20,263 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2020-01-16 23:25:20,264 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2020-01-16 23:25:20,264 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2020-01-16 23:25:20,267 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2020-01-16 23:25:20,268 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2020-01-16 23:25:20,268 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2020-01-16 23:25:20,268 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2020-01-16 23:25:20,268 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2020-01-16 23:25:20,268 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2020-01-16 23:25:20,269 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2020-01-16 23:25:20,269 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2020-01-16 23:25:20,269 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2020-01-16 23:25:20,269 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2020-01-16 23:25:20,269 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_9 given in one single declaration [2020-01-16 23:25:20,269 INFO L130 BoogieDeclarations]: Found specification of procedure set_9 [2020-01-16 23:25:20,270 INFO L138 BoogieDeclarations]: Found implementation of procedure set_9 [2020-01-16 23:25:20,270 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2020-01-16 23:25:20,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-01-16 23:25:20,270 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-01-16 23:25:20,271 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_12 given in one single declaration [2020-01-16 23:25:20,271 INFO L130 BoogieDeclarations]: Found specification of procedure set_12 [2020-01-16 23:25:20,278 INFO L138 BoogieDeclarations]: Found implementation of procedure set_12 [2020-01-16 23:25:20,279 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2020-01-16 23:25:20,280 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2020-01-16 23:25:20,280 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2020-01-16 23:25:20,281 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_6 given in one single declaration [2020-01-16 23:25:20,281 INFO L130 BoogieDeclarations]: Found specification of procedure set_6 [2020-01-16 23:25:20,281 INFO L138 BoogieDeclarations]: Found implementation of procedure set_6 [2020-01-16 23:25:20,281 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_10 given in one single declaration [2020-01-16 23:25:20,281 INFO L130 BoogieDeclarations]: Found specification of procedure set_10 [2020-01-16 23:25:20,282 INFO L138 BoogieDeclarations]: Found implementation of procedure set_10 [2020-01-16 23:25:20,282 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_7 given in one single declaration [2020-01-16 23:25:20,282 INFO L130 BoogieDeclarations]: Found specification of procedure set_7 [2020-01-16 23:25:20,282 INFO L138 BoogieDeclarations]: Found implementation of procedure set_7 [2020-01-16 23:25:20,283 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_11 given in one single declaration [2020-01-16 23:25:20,283 INFO L130 BoogieDeclarations]: Found specification of procedure set_11 [2020-01-16 23:25:20,283 INFO L138 BoogieDeclarations]: Found implementation of procedure set_11 [2020-01-16 23:25:20,283 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_8 given in one single declaration [2020-01-16 23:25:20,283 INFO L130 BoogieDeclarations]: Found specification of procedure set_8 [2020-01-16 23:25:20,283 INFO L138 BoogieDeclarations]: Found implementation of procedure set_8 [2020-01-16 23:25:20,285 WARN L205 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-01-16 23:25:20,582 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-01-16 23:25:20,582 INFO L287 CfgBuilder]: Removed 0 assume(true) statements. [2020-01-16 23:25:20,583 INFO L202 PluginConnector]: Adding new model example_13.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.01 11:25:20 BoogieIcfgContainer [2020-01-16 23:25:20,584 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-01-16 23:25:20,585 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-01-16 23:25:20,585 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-01-16 23:25:20,588 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-01-16 23:25:20,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_13.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.01 11:25:20" (1/2) ... [2020-01-16 23:25:20,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2732f054 and model type example_13.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.01 11:25:20, skipping insertion in model container [2020-01-16 23:25:20,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_13.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.01 11:25:20" (2/2) ... [2020-01-16 23:25:20,592 INFO L109 eAbstractionObserver]: Analyzing ICFG example_13.bpl [2020-01-16 23:25:20,599 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-01-16 23:25:20,605 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-01-16 23:25:20,606 INFO L339 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-01-16 23:25:21,115 INFO L250 AbstractCegarLoop]: Starting to check reachability of 14 error locations. [2020-01-16 23:25:21,134 INFO L374 AbstractCegarLoop]: Interprodecural is true [2020-01-16 23:25:21,134 INFO L375 AbstractCegarLoop]: Hoare is false [2020-01-16 23:25:21,134 INFO L376 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-01-16 23:25:21,135 INFO L377 AbstractCegarLoop]: Backedges is MCR [2020-01-16 23:25:21,135 INFO L378 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-01-16 23:25:21,135 INFO L379 AbstractCegarLoop]: Difference is false [2020-01-16 23:25:21,135 INFO L380 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-01-16 23:25:21,135 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-01-16 23:29:54,335 INFO L129 PetriNetUnfolder]: 45057/53287 cut-off events. [2020-01-16 23:29:54,336 INFO L130 PetriNetUnfolder]: For 53248/53248 co-relation queries the response was YES. [2020-01-16 23:29:54,336 INFO L202 CegarLoopForPetriNet]: Found error trace [2020-01-16 23:29:54,337 INFO L210 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-01-16 23:29:54,338 INFO L426 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr12INUSE_VIOLATION, ULTIMATE.startErr6INUSE_VIOLATION, ULTIMATE.startErr5INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION, ULTIMATE.startErr9INUSE_VIOLATION, ULTIMATE.startErr8INUSE_VIOLATION, ULTIMATE.startErr7INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr11INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr10INUSE_VIOLATION]=== [2020-01-16 23:29:54,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-01-16 23:29:54,344 INFO L82 PathProgramCache]: Analyzing trace with hash 264736663, now seen corresponding path program 1 times [2020-01-16 23:29:54,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-01-16 23:29:54,355 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821885297] [2020-01-16 23:29:54,356 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-01-16 23:29:54,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-01-16 23:29:54,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-01-16 23:29:54,527 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821885297] [2020-01-16 23:29:54,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-01-16 23:29:54,529 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-01-16 23:29:54,530 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1594668969] [2020-01-16 23:29:54,531 INFO L124 pAbStrategyModuleMcr]: Constructing automaton for MCR equivalence class. [2020-01-16 23:29:54,549 INFO L189 pAbStrategyModuleMcr]: Started intersection.