/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-None-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-5.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9e34d99ae2c6837f487980c721c4b6acf9d9b15c-9e34d99 [2021-07-09 20:23:34,659 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-09 20:23:34,660 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-09 20:23:34,682 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-07-09 20:23:34,682 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-07-09 20:23:34,683 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-07-09 20:23:34,683 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-07-09 20:23:34,685 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-07-09 20:23:34,686 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-07-09 20:23:34,686 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-07-09 20:23:34,687 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-07-09 20:23:34,687 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-07-09 20:23:34,688 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-09 20:23:34,688 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-09 20:23:34,689 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-09 20:23:34,690 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-09 20:23:34,690 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-09 20:23:34,691 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-09 20:23:34,692 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-09 20:23:34,693 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-09 20:23:34,694 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-09 20:23:34,699 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-09 20:23:34,700 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-09 20:23:34,700 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-09 20:23:34,702 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-07-09 20:23:34,702 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-07-09 20:23:34,702 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-07-09 20:23:34,703 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-07-09 20:23:34,703 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-07-09 20:23:34,704 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-07-09 20:23:34,704 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-07-09 20:23:34,704 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-07-09 20:23:34,705 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-07-09 20:23:34,705 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-07-09 20:23:34,706 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-07-09 20:23:34,706 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-07-09 20:23:34,707 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-07-09 20:23:34,707 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-07-09 20:23:34,707 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-07-09 20:23:34,708 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-07-09 20:23:34,712 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-07-09 20:23:34,717 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-POR-None-NoLbe.epf [2021-07-09 20:23:34,751 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-09 20:23:34,752 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-09 20:23:34,752 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-09 20:23:34,752 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-09 20:23:34,754 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-09 20:23:34,754 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-09 20:23:34,754 INFO L138 SettingsManager]: * Use SBE=true [2021-07-09 20:23:34,754 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-09 20:23:34,754 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-09 20:23:34,754 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-09 20:23:34,755 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-09 20:23:34,755 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-09 20:23:34,755 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-09 20:23:34,755 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-09 20:23:34,755 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-09 20:23:34,756 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-09 20:23:34,756 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-09 20:23:34,756 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-09 20:23:34,756 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-09 20:23:34,756 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-09 20:23:34,756 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-09 20:23:34,756 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-09 20:23:34,756 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-09 20:23:34,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-09 20:23:34,756 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-09 20:23:34,757 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-09 20:23:34,757 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-09 20:23:34,757 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-09 20:23:34,757 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-09 20:23:34,757 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-09 20:23:34,757 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-07-09 20:23:34,757 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-09 20:23:34,757 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-09 20:23:35,012 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-09 20:23:35,029 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-09 20:23:35,030 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-09 20:23:35,031 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-09 20:23:35,032 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-09 20:23:35,033 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-5.wvr.bpl [2021-07-09 20:23:35,033 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/misc-5.wvr.bpl' [2021-07-09 20:23:35,059 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-09 20:23:35,060 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-09 20:23:35,061 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-09 20:23:35,062 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-09 20:23:35,062 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-09 20:23:35,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 08:23:35" (1/1) ... [2021-07-09 20:23:35,076 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 08:23:35" (1/1) ... [2021-07-09 20:23:35,081 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-09 20:23:35,083 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-09 20:23:35,083 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-09 20:23:35,083 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-09 20:23:35,089 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 08:23:35" (1/1) ... [2021-07-09 20:23:35,089 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 08:23:35" (1/1) ... [2021-07-09 20:23:35,090 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 08:23:35" (1/1) ... [2021-07-09 20:23:35,090 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 08:23:35" (1/1) ... [2021-07-09 20:23:35,093 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 08:23:35" (1/1) ... [2021-07-09 20:23:35,095 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 08:23:35" (1/1) ... [2021-07-09 20:23:35,096 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 08:23:35" (1/1) ... [2021-07-09 20:23:35,096 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-09 20:23:35,098 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-09 20:23:35,098 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-09 20:23:35,099 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-09 20:23:35,100 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 08:23:35" (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 [2021-07-09 20:23:35,156 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-09 20:23:35,156 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-09 20:23:35,156 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-09 20:23:35,157 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-09 20:23:35,157 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-09 20:23:35,157 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-09 20:23:35,157 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-09 20:23:35,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-09 20:23:35,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-09 20:23:35,158 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-07-09 20:23:35,159 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-07-09 20:23:35,159 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-07-09 20:23:35,160 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-09 20:23:35,340 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-09 20:23:35,349 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-09 20:23:35,351 INFO L202 PluginConnector]: Adding new model misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 08:23:35 BoogieIcfgContainer [2021-07-09 20:23:35,351 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-09 20:23:35,355 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-09 20:23:35,355 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-09 20:23:35,361 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-09 20:23:35,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 08:23:35" (1/2) ... [2021-07-09 20:23:35,362 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@383bf964 and model type misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.07 08:23:35, skipping insertion in model container [2021-07-09 20:23:35,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "misc-5.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 08:23:35" (2/2) ... [2021-07-09 20:23:35,363 INFO L111 eAbstractionObserver]: Analyzing ICFG misc-5.wvr.bpl [2021-07-09 20:23:35,368 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-09 20:23:35,368 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-09 20:23:35,368 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-09 20:23:35,368 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-09 20:23:35,391 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-07-09 20:23:35,405 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-07-09 20:23:35,438 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-09 20:23:35,438 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-09 20:23:35,438 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-09 20:23:35,439 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-09 20:23:35,439 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-09 20:23:35,439 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-09 20:23:35,439 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-09 20:23:35,439 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-09 20:23:35,445 INFO L110 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 23 transitions, 70 flow [2021-07-09 20:23:35,456 INFO L132 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 87 states, 86 states have (on average 2.616279069767442) internal successors, (225), 86 states have internal predecessors, (225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 20:23:35,462 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 20:23:35,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 20:23:35,465 INFO L82 PathProgramCache]: Analyzing trace with hash 1499982690, now seen corresponding path program 1 times [2021-07-09 20:23:35,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 20:23:35,474 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93817053] [2021-07-09 20:23:35,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 20:23:35,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 20:23:35,614 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-07-09 20:23:35,615 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 20:23:35,615 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93817053] [2021-07-09 20:23:35,616 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93817053] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 20:23:35,616 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 20:23:35,616 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-07-09 20:23:35,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536093915] [2021-07-09 20:23:35,619 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-07-09 20:23:35,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 20:23:35,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-07-09 20:23:35,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-07-09 20:23:35,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-09 20:23:35,628 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-09 20:23:35,628 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 20:23:35,628 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-09 20:23:35,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-09 20:23:35,644 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-09 20:23:35,644 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 20:23:35,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 20:23:35,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1029145306, now seen corresponding path program 2 times [2021-07-09 20:23:35,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 20:23:35,645 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052726029] [2021-07-09 20:23:35,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 20:23:35,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 20:23:35,715 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 20:23:35,716 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 20:23:35,716 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052726029] [2021-07-09 20:23:35,716 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052726029] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 20:23:35,716 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496806364] [2021-07-09 20:23:35,716 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 20:23:35,762 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-09 20:23:35,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-09 20:23:35,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 6 conjunts are in the unsatisfiable core [2021-07-09 20:23:35,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-09 20:23:35,889 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 20:23:35,889 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496806364] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 20:23:35,890 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-09 20:23:35,890 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2021-07-09 20:23:35,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307866806] [2021-07-09 20:23:35,893 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-09 20:23:35,893 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 20:23:35,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-09 20:23:35,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-07-09 20:23:35,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-09 20:23:35,895 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-09 20:23:35,896 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 20:23:35,896 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-09 20:23:35,896 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-09 20:23:35,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-09 20:23:35,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-09 20:23:36,170 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 20:23:36,171 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 20:23:36,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 20:23:36,171 INFO L82 PathProgramCache]: Analyzing trace with hash 1899773994, now seen corresponding path program 3 times [2021-07-09 20:23:36,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 20:23:36,172 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396097908] [2021-07-09 20:23:36,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 20:23:36,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 20:23:36,232 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 20:23:36,232 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 20:23:36,232 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396097908] [2021-07-09 20:23:36,232 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396097908] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 20:23:36,232 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1998439334] [2021-07-09 20:23:36,233 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 20:23:36,261 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-07-09 20:23:36,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-09 20:23:36,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 8 conjunts are in the unsatisfiable core [2021-07-09 20:23:36,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-09 20:23:36,373 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 20:23:36,374 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1998439334] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 20:23:36,374 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-09 20:23:36,374 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2021-07-09 20:23:36,374 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9097389] [2021-07-09 20:23:36,374 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-09 20:23:36,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 20:23:36,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-09 20:23:36,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-07-09 20:23:36,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-09 20:23:36,375 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-09 20:23:36,375 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 3.090909090909091) internal successors, (34), 10 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 20:23:36,375 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-09 20:23:36,375 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-09 20:23:36,375 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-09 20:23:36,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-09 20:23:36,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-09 20:23:36,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-09 20:23:36,672 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 20:23:36,673 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 20:23:36,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 20:23:36,673 INFO L82 PathProgramCache]: Analyzing trace with hash 1517216046, now seen corresponding path program 4 times [2021-07-09 20:23:36,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 20:23:36,674 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439070169] [2021-07-09 20:23:36,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 20:23:36,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 20:23:36,816 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 20:23:36,817 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 20:23:36,817 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439070169] [2021-07-09 20:23:36,817 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439070169] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 20:23:36,817 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1864995677] [2021-07-09 20:23:36,817 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 20:23:36,857 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-07-09 20:23:36,858 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-09 20:23:36,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 11 conjunts are in the unsatisfiable core [2021-07-09 20:23:36,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-09 20:23:36,996 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 20:23:36,997 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1864995677] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 20:23:36,997 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-09 20:23:36,997 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2021-07-09 20:23:36,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342601035] [2021-07-09 20:23:36,997 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-07-09 20:23:36,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 20:23:36,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-07-09 20:23:36,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2021-07-09 20:23:36,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-09 20:23:36,998 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-09 20:23:36,998 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 2.8) internal successors, (42), 14 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 20:23:36,998 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-09 20:23:36,998 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-09 20:23:36,998 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-09 20:23:36,998 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-09 20:23:37,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-09 20:23:37,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-09 20:23:37,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-09 20:23:37,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-09 20:23:37,372 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 20:23:37,373 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 20:23:37,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 20:23:37,373 INFO L82 PathProgramCache]: Analyzing trace with hash 699710774, now seen corresponding path program 5 times [2021-07-09 20:23:37,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 20:23:37,374 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233169741] [2021-07-09 20:23:37,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 20:23:37,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 20:23:37,950 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 1 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 20:23:37,950 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 20:23:37,950 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233169741] [2021-07-09 20:23:37,950 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233169741] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 20:23:37,950 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626596932] [2021-07-09 20:23:37,950 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 20:23:37,992 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-07-09 20:23:37,993 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-09 20:23:37,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 16 conjunts are in the unsatisfiable core [2021-07-09 20:23:37,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-09 20:23:38,502 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 1 proven. 81 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 20:23:38,503 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626596932] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 20:23:38,503 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-09 20:23:38,503 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2021-07-09 20:23:38,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581567507] [2021-07-09 20:23:38,503 INFO L462 AbstractCegarLoop]: Interpolant automaton has 24 states [2021-07-09 20:23:38,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 20:23:38,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-07-09 20:23:38,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=449, Unknown=0, NotChecked=0, Total=552 [2021-07-09 20:23:38,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-09 20:23:38,504 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-09 20:23:38,505 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 24 states, 24 states have (on average 2.4583333333333335) internal successors, (59), 23 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 20:23:38,505 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-07-09 20:23:38,505 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-09 20:23:38,505 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 7 states. [2021-07-09 20:23:38,505 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 11 states. [2021-07-09 20:23:38,505 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-09 20:23:39,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-07-09 20:23:39,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-09 20:23:39,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-07-09 20:23:39,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-07-09 20:23:39,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-07-09 20:23:39,423 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-07-09 20:23:39,423 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 20:23:39,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 20:23:39,424 INFO L82 PathProgramCache]: Analyzing trace with hash 377358402, now seen corresponding path program 6 times [2021-07-09 20:23:39,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 20:23:39,424 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717662403] [2021-07-09 20:23:39,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 20:23:40,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown