/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-NewStatesSleepPersistentFixedOrder-NoLbe-Random521.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/parallel-sum-equiv.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9e34d99ae2c6837f487980c721c4b6acf9d9b15c-9e34d99 [2021-07-10 14:52:36,280 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-10 14:52:36,283 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-10 14:52:36,323 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-10 14:52:36,393 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-NewStatesSleepPersistentFixedOrder-NoLbe-Random521.epf [2021-07-10 14:52:36,424 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-10 14:52:36,424 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-10 14:52:36,425 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-10 14:52:36,425 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-10 14:52:36,427 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-10 14:52:36,427 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-10 14:52:36,428 INFO L138 SettingsManager]: * Use SBE=true [2021-07-10 14:52:36,428 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-10 14:52:36,428 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-10 14:52:36,428 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-10 14:52:36,429 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-10 14:52:36,429 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-10 14:52:36,429 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-10 14:52:36,429 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-10 14:52:36,430 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-10 14:52:36,430 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-10 14:52:36,430 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-10 14:52:36,430 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-10 14:52:36,430 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-10 14:52:36,430 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-10 14:52:36,430 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-10 14:52:36,430 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-10 14:52:36,431 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-10 14:52:36,431 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-10 14:52:36,431 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-10 14:52:36,431 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-10 14:52:36,431 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-10 14:52:36,431 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-10 14:52:36,431 INFO L138 SettingsManager]: * DFS Order used in POR=RANDOM [2021-07-10 14:52:36,432 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-10 14:52:36,432 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-10 14:52:36,432 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-07-10 14:52:36,432 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-10 14:52:36,432 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2021-07-10 14:52:36,433 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-07-10 14:52:36,433 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-10 14:52:36,701 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-10 14:52:36,723 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-10 14:52:36,725 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-10 14:52:36,726 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-10 14:52:36,727 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-10 14:52:36,728 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/parallel-sum-equiv.wvr.bpl [2021-07-10 14:52:36,728 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/parallel/parallel-sum-equiv.wvr.bpl' [2021-07-10 14:52:36,749 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-10 14:52:36,751 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-10 14:52:36,751 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-10 14:52:36,752 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-10 14:52:36,752 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-10 14:52:36,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "parallel-sum-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 02:52:36" (1/1) ... [2021-07-10 14:52:36,772 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "parallel-sum-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 02:52:36" (1/1) ... [2021-07-10 14:52:36,778 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-10 14:52:36,779 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-10 14:52:36,779 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-10 14:52:36,779 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-10 14:52:36,784 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "parallel-sum-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 02:52:36" (1/1) ... [2021-07-10 14:52:36,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "parallel-sum-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 02:52:36" (1/1) ... [2021-07-10 14:52:36,785 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "parallel-sum-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 02:52:36" (1/1) ... [2021-07-10 14:52:36,786 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "parallel-sum-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 02:52:36" (1/1) ... [2021-07-10 14:52:36,788 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "parallel-sum-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 02:52:36" (1/1) ... [2021-07-10 14:52:36,790 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "parallel-sum-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 02:52:36" (1/1) ... [2021-07-10 14:52:36,791 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "parallel-sum-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 02:52:36" (1/1) ... [2021-07-10 14:52:36,792 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-10 14:52:36,792 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-10 14:52:36,793 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-10 14:52:36,793 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-10 14:52:36,794 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "parallel-sum-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 02:52:36" (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 [2021-07-10 14:52:36,875 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-10 14:52:36,875 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-10 14:52:36,875 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-10 14:52:36,875 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-10 14:52:36,875 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-10 14:52:36,875 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-10 14:52:36,875 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-10 14:52:36,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-10 14:52:36,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-10 14:52:36,876 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-07-10 14:52:36,876 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-07-10 14:52:36,876 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-07-10 14:52:36,876 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-07-10 14:52:36,876 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-07-10 14:52:36,876 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-07-10 14:52:36,879 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-10 14:52:37,113 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-10 14:52:37,114 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-07-10 14:52:37,114 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: thread2EXIT is neither atomic block end nor error location. [2021-07-10 14:52:37,115 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: thread3EXIT is neither atomic block end nor error location. [2021-07-10 14:52:37,115 WARN L327 CfgBuilder]: Unexpected successor node of atomic block begin: thread4EXIT is neither atomic block end nor error location. [2021-07-10 14:52:37,116 INFO L202 PluginConnector]: Adding new model parallel-sum-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 02:52:37 BoogieIcfgContainer [2021-07-10 14:52:37,116 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-10 14:52:37,118 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-10 14:52:37,118 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-10 14:52:37,120 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-10 14:52:37,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "parallel-sum-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.07 02:52:36" (1/2) ... [2021-07-10 14:52:37,121 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fc0ddf2 and model type parallel-sum-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 02:52:37, skipping insertion in model container [2021-07-10 14:52:37,121 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "parallel-sum-equiv.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 02:52:37" (2/2) ... [2021-07-10 14:52:37,123 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-sum-equiv.wvr.bpl [2021-07-10 14:52:37,127 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-10 14:52:37,128 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-10 14:52:37,128 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-10 14:52:37,128 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-10 14:52:37,234 INFO L149 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2021-07-10 14:52:37,270 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 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 [2021-07-10 14:52:37,338 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-10 14:52:37,339 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-10 14:52:37,339 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-10 14:52:37,339 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-10 14:52:37,339 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-10 14:52:37,339 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-10 14:52:37,339 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-10 14:52:37,339 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == thread1Thread1of1ForFork0======== [2021-07-10 14:52:37,560 INFO L301 ceAbstractionStarter]: Result for error location thread1Thread1of1ForFork0 was SAFE (1/2) [2021-07-10 14:52:37,562 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-07-10 14:52:37,568 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-10 14:52:37,568 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-10 14:52:37,569 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-10 14:52:37,569 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-10 14:52:37,569 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-10 14:52:37,569 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-10 14:52:37,569 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-10 14:52:37,569 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-10 14:52:37,621 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-10 14:52:37,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 14:52:37,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1397113250, now seen corresponding path program 1 times [2021-07-10 14:52:37,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 14:52:37,632 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779607163] [2021-07-10 14:52:37,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 14:52:37,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 14:52:37,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 14:52:37,762 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 14:52:37,763 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779607163] [2021-07-10 14:52:37,763 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779607163] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-10 14:52:37,763 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-10 14:52:37,763 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-10 14:52:37,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951149408] [2021-07-10 14:52:37,767 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-10 14:52:37,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 14:52:37,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-10 14:52:37,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-10 14:52:37,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 14:52:37,779 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 14:52:37,780 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 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) [2021-07-10 14:52:37,780 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 14:52:37,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-10 14:52:37,805 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-10 14:52:37,805 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-07-10 14:52:37,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-10 14:52:37,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1806030624, now seen corresponding path program 1 times [2021-07-10 14:52:37,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-10 14:52:37,806 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245681223] [2021-07-10 14:52:37,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-10 14:52:37,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 14:52:37,841 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 14:52:37,842 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-10 14:52:37,842 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245681223] [2021-07-10 14:52:37,842 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245681223] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 14:52:37,842 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297293844] [2021-07-10 14:52:37,842 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 [2021-07-10 14:52:37,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-10 14:52:37,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 4 conjunts are in the unsatisfiable core [2021-07-10 14:52:37,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-10 14:52:37,981 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-10 14:52:37,982 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [297293844] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-10 14:52:37,982 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-10 14:52:37,982 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-07-10 14:52:37,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229770736] [2021-07-10 14:52:37,983 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-10 14:52:37,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-10 14:52:37,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-10 14:52:37,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-07-10 14:52:37,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-10 14:52:37,985 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-10 14:52:37,985 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 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) [2021-07-10 14:52:37,985 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-10 14:52:37,985 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-10 14:52:38,242 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-10 14:52:38,243 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalStateException: Guarantee of compatibility failed at de.uni_freiburg.informatik.ultimate.automata.partialorder.PersistentSetReduction$CompliantDfsOrder.lambda$0(PersistentSetReduction.java:137) at java.base/java.util.TimSort.binarySort(TimSort.java:296) at java.base/java.util.TimSort.sort(TimSort.java:221) at java.base/java.util.Arrays.sort(Arrays.java:1515) at java.base/java.util.ArrayList.sort(ArrayList.java:1750) at de.uni_freiburg.informatik.ultimate.automata.partialorder.SleepSetNewStateReduction.search(SleepSetNewStateReduction.java:147) at de.uni_freiburg.informatik.ultimate.automata.partialorder.SleepSetNewStateReduction.(SleepSetNewStateReduction.java:111) at de.uni_freiburg.informatik.ultimate.automata.partialorder.PersistentSetReduction.applyNewStateReduction(PersistentSetReduction.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.concurrency.PartialOrderReductionFacade.apply(PartialOrderReductionFacade.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.concurrency.PartialOrderCegarLoop.isAbstractionEmpty(PartialOrderCegarLoop.java:193) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:509) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:374) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:69) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:63) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:367) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:293) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:238) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-07-10 14:52:38,245 INFO L168 Benchmark]: Toolchain (without parser) took 1493.90 ms. Allocated memory is still 255.9 MB. Free memory was 234.7 MB in the beginning and 178.3 MB in the end (delta: 56.4 MB). Peak memory consumption was 57.0 MB. Max. memory is 8.0 GB. [2021-07-10 14:52:38,245 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 255.9 MB. Free memory was 235.9 MB in the beginning and 235.8 MB in the end (delta: 76.8 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-07-10 14:52:38,246 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.48 ms. Allocated memory is still 255.9 MB. Free memory was 234.6 MB in the beginning and 233.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-10 14:52:38,246 INFO L168 Benchmark]: Boogie Preprocessor took 13.02 ms. Allocated memory is still 255.9 MB. Free memory was 233.2 MB in the beginning and 232.2 MB in the end (delta: 976.8 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-10 14:52:38,246 INFO L168 Benchmark]: RCFGBuilder took 323.98 ms. Allocated memory is still 255.9 MB. Free memory was 232.1 MB in the beginning and 216.7 MB in the end (delta: 15.4 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-07-10 14:52:38,247 INFO L168 Benchmark]: TraceAbstraction took 1126.09 ms. Allocated memory is still 255.9 MB. Free memory was 216.2 MB in the beginning and 178.3 MB in the end (delta: 37.9 MB). Peak memory consumption was 39.1 MB. Max. memory is 8.0 GB. [2021-07-10 14:52:38,257 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 255.9 MB. Free memory was 235.9 MB in the beginning and 235.8 MB in the end (delta: 76.8 kB). There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 26.48 ms. Allocated memory is still 255.9 MB. Free memory was 234.6 MB in the beginning and 233.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 13.02 ms. Allocated memory is still 255.9 MB. Free memory was 233.2 MB in the beginning and 232.2 MB in the end (delta: 976.8 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 323.98 ms. Allocated memory is still 255.9 MB. Free memory was 232.1 MB in the beginning and 216.7 MB in the end (delta: 15.4 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1126.09 ms. Allocated memory is still 255.9 MB. Free memory was 216.2 MB in the beginning and 178.3 MB in the end (delta: 37.9 MB). Peak memory consumption was 39.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 552, positive: 538, positive conditional: 23, positive unconditional: 515, negative: 14, negative conditional: 7, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: DistributingIndependenceRelation.Independence Queries: [ total: 545, positive: 538, positive conditional: 23, positive unconditional: 515, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DistributingIndependenceRelation.Statistics on underlying relations: [ CachedIndependenceRelation.Independence Queries: [ total: 545, positive: 538, positive conditional: 0, positive unconditional: 538, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 372, positive: 365, positive conditional: 0, positive unconditional: 365, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 372, positive: 364, positive conditional: 0, positive unconditional: 364, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Independence Queries: [ total: 8, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 8, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 111, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 107, negative conditional: 0, negative unconditional: 107, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 545, positive: 173, positive conditional: 0, positive unconditional: 173, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 372, unknown conditional: 0, unknown unconditional: 372] , Statistics on independence cache: Total cache size (in pairs): 372, Positive cache size: 365, Positive conditional cache size: 0, Positive unconditional cache size: 365, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7 ], Maximal queried relation: 0, Independence queries for same thread: 7 - StatisticsResult: Persistent set benchmarks Persistent set computation time[ms]: 164, Number of persistent set computation: 20, Number of trivial persistent sets: 18, Underlying independence relation: ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 552, positive: 538, positive conditional: 23, positive unconditional: 515, negative: 14, negative conditional: 7, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: DistributingIndependenceRelation.Independence Queries: [ total: 545, positive: 538, positive conditional: 23, positive unconditional: 515, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DistributingIndependenceRelation.Statistics on underlying relations: [ CachedIndependenceRelation.Independence Queries: [ total: 545, positive: 538, positive conditional: 0, positive unconditional: 538, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 372, positive: 365, positive conditional: 0, positive unconditional: 365, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 372, positive: 364, positive conditional: 0, positive unconditional: 364, negative: 8, negative conditional: 0, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Independence Queries: [ total: 8, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 8, positive: 1, positive conditional: 0, positive unconditional: 1, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 111, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 107, negative conditional: 0, negative unconditional: 107, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 545, positive: 173, positive conditional: 0, positive unconditional: 173, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 372, unknown conditional: 0, unknown unconditional: 372] , Statistics on independence cache: Total cache size (in pairs): 372, Positive cache size: 365, Positive conditional cache size: 0, Positive unconditional cache size: 365, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7 ], Maximal queried relation: 0, Independence queries for same thread: 7 - ExceptionOrErrorResult: IllegalStateException: Guarantee of compatibility failed de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalStateException: Guarantee of compatibility failed: de.uni_freiburg.informatik.ultimate.automata.partialorder.PersistentSetReduction$CompliantDfsOrder.lambda$0(PersistentSetReduction.java:137) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...