/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-NewStatesSleep-NoLbe-Random521.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/POPL2022/incr-decr14.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-8b99979fc9bd30b823d307a67cb055caa4790482-8b99979 [2021-06-30 16:17:52,468 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-30 16:17:52,470 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-30 16:17:52,504 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-30 16:17:52,531 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-30 16:17:52,532 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-30 16:17:52,533 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-30 16:17:52,534 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-30 16:17:52,534 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-30 16:17:52,535 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-30 16:17:52,536 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-30 16:17:52,538 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-30 16:17:52,539 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-30 16:17:52,540 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-30 16:17:52,541 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-30 16:17:52,542 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-30 16:17:52,544 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-30 16:17:52,553 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-NewStatesSleep-NoLbe-Random521.epf [2021-06-30 16:17:52,577 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-30 16:17:52,577 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-30 16:17:52,578 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-30 16:17:52,578 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-30 16:17:52,579 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-30 16:17:52,579 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-30 16:17:52,579 INFO L138 SettingsManager]: * Use SBE=true [2021-06-30 16:17:52,579 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-30 16:17:52,579 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-30 16:17:52,580 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-30 16:17:52,580 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-30 16:17:52,580 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-30 16:17:52,580 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-30 16:17:52,580 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-30 16:17:52,580 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-30 16:17:52,580 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-30 16:17:52,581 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-30 16:17:52,581 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-30 16:17:52,581 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-30 16:17:52,581 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-30 16:17:52,581 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-30 16:17:52,581 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-30 16:17:52,581 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-30 16:17:52,582 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-30 16:17:52,582 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-30 16:17:52,582 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-30 16:17:52,582 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-30 16:17:52,582 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-30 16:17:52,582 INFO L138 SettingsManager]: * DFS Order used in POR=RANDOM [2021-06-30 16:17:52,582 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-30 16:17:52,583 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-30 16:17:52,583 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-30 16:17:52,583 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-30 16:17:52,583 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2021-06-30 16:17:52,583 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-06-30 16:17:52,583 INFO L138 SettingsManager]: * Random seed used by POR DFS order=521 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-30 16:17:52,887 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-30 16:17:52,905 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-30 16:17:52,907 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-30 16:17:52,908 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-30 16:17:52,910 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-30 16:17:52,910 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/incr-decr14.bpl [2021-06-30 16:17:52,911 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/POPL2022/incr-decr14.bpl' [2021-06-30 16:17:52,933 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-30 16:17:52,934 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-30 16:17:52,937 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-30 16:17:52,937 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-30 16:17:52,937 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-30 16:17:52,947 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "incr-decr14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 04:17:52" (1/1) ... [2021-06-30 16:17:52,954 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "incr-decr14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 04:17:52" (1/1) ... [2021-06-30 16:17:52,961 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-30 16:17:52,963 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-30 16:17:52,963 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-30 16:17:52,963 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-30 16:17:52,969 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "incr-decr14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 04:17:52" (1/1) ... [2021-06-30 16:17:52,970 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "incr-decr14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 04:17:52" (1/1) ... [2021-06-30 16:17:52,974 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "incr-decr14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 04:17:52" (1/1) ... [2021-06-30 16:17:52,975 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "incr-decr14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 04:17:52" (1/1) ... [2021-06-30 16:17:52,978 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "incr-decr14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 04:17:52" (1/1) ... [2021-06-30 16:17:52,980 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "incr-decr14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 04:17:52" (1/1) ... [2021-06-30 16:17:52,980 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "incr-decr14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 04:17:52" (1/1) ... [2021-06-30 16:17:52,981 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-30 16:17:52,982 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-30 16:17:52,982 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-30 16:17:52,982 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-30 16:17:52,984 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "incr-decr14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 04:17:52" (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 [2021-06-30 16:17:53,052 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-30 16:17:53,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-30 16:17:53,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-30 16:17:53,053 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Thread given in one single declaration [2021-06-30 16:17:53,053 INFO L130 BoogieDeclarations]: Found specification of procedure Thread [2021-06-30 16:17:53,053 INFO L138 BoogieDeclarations]: Found implementation of procedure Thread [2021-06-30 16:17:53,054 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-30 16:17:53,179 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-30 16:17:53,180 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-06-30 16:17:53,181 INFO L202 PluginConnector]: Adding new model incr-decr14.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.06 04:17:53 BoogieIcfgContainer [2021-06-30 16:17:53,181 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-30 16:17:53,183 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-30 16:17:53,183 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-30 16:17:53,185 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-30 16:17:53,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "incr-decr14.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.06 04:17:52" (1/2) ... [2021-06-30 16:17:53,187 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3058e189 and model type incr-decr14.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.06 04:17:53, skipping insertion in model container [2021-06-30 16:17:53,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "incr-decr14.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.06 04:17:53" (2/2) ... [2021-06-30 16:17:53,188 INFO L111 eAbstractionObserver]: Analyzing ICFG incr-decr14.bpl [2021-06-30 16:17:53,193 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-30 16:17:53,193 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-30 16:17:53,194 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-30 16:17:53,195 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-30 16:17:53,429 INFO L149 ThreadInstanceAdder]: Constructed 14 joinOtherThreadTransitions. [2021-06-30 16:17:53,447 INFO L255 AbstractCegarLoop]: Starting to check reachability of 15 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 [2021-06-30 16:17:53,493 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-30 16:17:53,493 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-30 16:17:53,494 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-30 16:17:53,494 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-30 16:17:53,494 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-30 16:17:53,494 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-30 16:17:53,494 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-30 16:17:53,494 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-30 16:18:50,193 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_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]=== [2021-06-30 16:18:50,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-30 16:18:50,198 INFO L82 PathProgramCache]: Analyzing trace with hash -221322490, now seen corresponding path program 1 times [2021-06-30 16:18:50,204 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-30 16:18:50,204 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066856156] [2021-06-30 16:18:50,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-30 16:18:50,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-30 16:18:50,454 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-30 16:18:50,454 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-30 16:18:50,455 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066856156] [2021-06-30 16:18:50,456 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066856156] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-30 16:18:50,456 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104303847] [2021-06-30 16:18:50,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2021-06-30 16:18:50,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-30 16:18:50,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 15 conjunts are in the unsatisfiable core [2021-06-30 16:18:50,628 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-30 16:18:50,845 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-30 16:18:50,846 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104303847] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-30 16:18:50,846 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-30 16:18:50,846 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-06-30 16:18:50,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226346156] [2021-06-30 16:18:50,853 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-30 16:18:50,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-30 16:18:50,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-30 16:18:50,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-06-30 16:18:50,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-30 16:18:50,873 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-30 16:18:50,874 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 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) [2021-06-30 16:18:50,875 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-30 16:19:18,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-30 16:19:18,506 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-06-30 16:19:18,507 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr13INUSE_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]=== [2021-06-30 16:19:18,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-30 16:19:18,508 INFO L82 PathProgramCache]: Analyzing trace with hash 815867424, now seen corresponding path program 1 times [2021-06-30 16:19:18,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-30 16:19:18,508 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167083527] [2021-06-30 16:19:18,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-30 16:19:18,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-30 16:19:18,827 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-06-30 16:19:18,828 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-30 16:19:18,828 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167083527] [2021-06-30 16:19:18,828 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167083527] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-30 16:19:18,828 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963302398] [2021-06-30 16:19:18,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2021-06-30 16:19:19,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-30 16:19:19,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 31 conjunts are in the unsatisfiable core [2021-06-30 16:19:19,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-30 16:19:19,304 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-06-30 16:19:19,304 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1963302398] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-30 16:19:19,304 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-30 16:19:19,321 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-06-30 16:19:19,321 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950589687] [2021-06-30 16:19:19,322 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-06-30 16:19:19,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-30 16:19:19,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-06-30 16:19:19,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-06-30 16:19:19,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-30 16:19:19,324 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-30 16:19:19,325 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 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) [2021-06-30 16:19:19,325 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-06-30 16:19:19,325 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.