/usr/bin/java -Xmx16000000000 -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-DelaySleep-NoLbe-Random521.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/bench/exp2x6.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2abb09bbbae98a04ae2fcc735832bfdba44f6fbc-2abb09b [2021-06-06 20:58:58,005 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-06 20:58:58,007 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-06 20:58:58,039 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-06 20:58:58,060 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-06 20:58:58,062 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-06 20:58:58,063 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-06 20:58:58,064 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-06 20:58:58,066 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-06 20:58:58,067 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-06 20:58:58,069 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-06 20:58:58,074 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-06 20:58:58,075 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-06 20:58:58,076 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-06 20:58:58,077 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-06 20:58:58,079 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-06 20:58:58,085 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-06 20:58:58,085 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-06 20:58:58,085 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-06 20:58:58,086 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-06 20:58:58,087 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-06 20:58:58,087 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-06 20:58:58,087 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-06 20:58:58,088 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-06 20:58:58,088 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-06 20:58:58,089 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-06 20:58:58,090 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-06 20:58:58,090 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-06 20:58:58,090 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-06 20:58:58,091 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-06 20:58:58,091 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-06 20:58:58,091 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-06 20:58:58,092 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-06 20:58:58,096 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-DelaySleep-NoLbe-Random521.epf [2021-06-06 20:58:58,132 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-06 20:58:58,132 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-06 20:58:58,132 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-06 20:58:58,132 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-06 20:58:58,135 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-06 20:58:58,135 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-06 20:58:58,135 INFO L138 SettingsManager]: * Use SBE=true [2021-06-06 20:58:58,135 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-06 20:58:58,135 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-06 20:58:58,135 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-06 20:58:58,136 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-06 20:58:58,136 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-06 20:58:58,136 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-06 20:58:58,136 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-06 20:58:58,136 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-06 20:58:58,137 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-06 20:58:58,137 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-06 20:58:58,137 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-06 20:58:58,137 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-06 20:58:58,137 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-06 20:58:58,137 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-06 20:58:58,137 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-06 20:58:58,137 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-06 20:58:58,137 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-06 20:58:58,138 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-06 20:58:58,138 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-06 20:58:58,138 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-06 20:58:58,138 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-06 20:58:58,138 INFO L138 SettingsManager]: * DFS Order used in POR=RANDOM [2021-06-06 20:58:58,138 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-06 20:58:58,139 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-06 20:58:58,139 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-06 20:58:58,139 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-06 20:58:58,139 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-06-06 20:58:58,139 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-06-06 20:58:58,139 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-06 20:58:58,451 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-06 20:58:58,476 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-06 20:58:58,478 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-06 20:58:58,479 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-06 20:58:58,480 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-06 20:58:58,481 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/bench/exp2x6.wvr.bpl [2021-06-06 20:58:58,481 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/bench/exp2x6.wvr.bpl' [2021-06-06 20:58:58,502 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-06 20:58:58,504 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-06 20:58:58,509 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-06 20:58:58,509 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-06 20:58:58,509 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-06 20:58:58,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 08:58:58" (1/1) ... [2021-06-06 20:58:58,527 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 08:58:58" (1/1) ... [2021-06-06 20:58:58,532 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-06 20:58:58,534 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-06 20:58:58,534 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-06 20:58:58,534 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-06 20:58:58,540 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 08:58:58" (1/1) ... [2021-06-06 20:58:58,541 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 08:58:58" (1/1) ... [2021-06-06 20:58:58,542 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 08:58:58" (1/1) ... [2021-06-06 20:58:58,542 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 08:58:58" (1/1) ... [2021-06-06 20:58:58,544 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 08:58:58" (1/1) ... [2021-06-06 20:58:58,547 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 08:58:58" (1/1) ... [2021-06-06 20:58:58,547 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 08:58:58" (1/1) ... [2021-06-06 20:58:58,548 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-06 20:58:58,549 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-06 20:58:58,549 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-06 20:58:58,550 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-06 20:58:58,551 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 08:58:58" (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 [2021-06-06 20:58:58,621 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-06 20:58:58,621 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-06 20:58:58,621 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-06 20:58:58,621 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-06 20:58:58,621 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-06 20:58:58,622 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-06 20:58:58,622 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-06 20:58:58,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-06 20:58:58,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-06 20:58:58,622 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-06 20:58:58,622 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-06 20:58:58,622 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-06 20:58:58,622 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-06-06 20:58:58,623 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-06-06 20:58:58,623 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-06-06 20:58:58,623 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-06 20:58:58,796 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-06 20:58:58,797 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-06 20:58:58,798 INFO L202 PluginConnector]: Adding new model exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.06 08:58:58 BoogieIcfgContainer [2021-06-06 20:58:58,798 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-06 20:58:58,800 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-06 20:58:58,800 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-06 20:58:58,802 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-06 20:58:58,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.06 08:58:58" (1/2) ... [2021-06-06 20:58:58,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@267b5316 and model type exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.06 08:58:58, skipping insertion in model container [2021-06-06 20:58:58,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.06 08:58:58" (2/2) ... [2021-06-06 20:58:58,805 INFO L111 eAbstractionObserver]: Analyzing ICFG exp2x6.wvr.bpl [2021-06-06 20:58:58,809 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-06 20:58:58,809 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-06 20:58:58,809 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-06 20:58:58,810 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-06 20:58:58,855 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-06-06 20:58:58,893 INFO L255 AbstractCegarLoop]: Starting to check reachability of 5 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 [2021-06-06 20:58:58,985 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-06 20:58:58,985 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-06 20:58:58,986 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-06 20:58:58,986 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-06 20:58:58,986 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-06 20:58:58,986 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-06 20:58:58,986 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-06 20:58:58,986 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-06 20:58:59,040 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 20:58:59,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 20:58:59,048 INFO L82 PathProgramCache]: Analyzing trace with hash -1368112617, now seen corresponding path program 1 times [2021-06-06 20:58:59,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 20:58:59,055 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602312181] [2021-06-06 20:58:59,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 20:58:59,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 20:58:59,249 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 20:58:59,249 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 20:58:59,249 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602312181] [2021-06-06 20:58:59,250 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602312181] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-06 20:58:59,250 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-06 20:58:59,250 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-06 20:58:59,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980141212] [2021-06-06 20:58:59,254 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-06 20:58:59,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 20:58:59,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-06 20:58:59,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-06 20:58:59,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 20:58:59,271 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 20:58:59,277 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2021-06-06 20:58:59,277 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 20:58:59,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-06 20:58:59,339 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-06 20:58:59,339 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 20:58:59,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 20:58:59,343 INFO L82 PathProgramCache]: Analyzing trace with hash 345820351, now seen corresponding path program 1 times [2021-06-06 20:58:59,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 20:58:59,344 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381832788] [2021-06-06 20:58:59,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 20:58:59,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 20:58:59,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-06 20:58:59,422 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 20:58:59,422 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381832788] [2021-06-06 20:58:59,422 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381832788] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-06 20:58:59,423 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-06 20:58:59,423 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-06 20:58:59,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186465290] [2021-06-06 20:58:59,428 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-06 20:58:59,430 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-06 20:58:59,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-06 20:58:59,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-06 20:58:59,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-06 20:58:59,434 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-06 20:58:59,434 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 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) [2021-06-06 20:58:59,434 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-06-06 20:58:59,434 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-06 20:58:59,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-06 20:58:59,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-06 20:58:59,530 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-06 20:58:59,530 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-06 20:58:59,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-06 20:58:59,531 INFO L82 PathProgramCache]: Analyzing trace with hash -631102410, now seen corresponding path program 1 times [2021-06-06 20:58:59,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-06 20:58:59,532 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84018171] [2021-06-06 20:58:59,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-06 20:58:59,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 20:58:59,644 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-06 20:58:59,645 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-06 20:58:59,645 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84018171] [2021-06-06 20:58:59,645 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84018171] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-06 20:58:59,645 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150744156] [2021-06-06 20:58:59,646 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 [2021-06-06 20:58:59,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-06 20:58:59,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 21 conjunts are in the unsatisfiable core [2021-06-06 20:58:59,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2021-06-06 21:13:13,122 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-06 21:13:13,123 WARN L547 AbstractCegarLoop]: Verification canceled [2021-06-06 21:13:13,131 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-06 21:13:13,132 WARN L196 ceAbstractionStarter]: Timeout [2021-06-06 21:13:13,133 INFO L202 PluginConnector]: Adding new model exp2x6.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.06 09:13:13 BasicIcfg [2021-06-06 21:13:13,133 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-06 21:13:13,134 INFO L168 Benchmark]: Toolchain (without parser) took 854629.87 ms. Allocated memory was 333.4 MB in the beginning and 939.5 MB in the end (delta: 606.1 MB). Free memory was 313.0 MB in the beginning and 734.6 MB in the end (delta: -421.6 MB). Peak memory consumption was 962.3 MB. Max. memory is 16.0 GB. [2021-06-06 21:13:13,134 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.15 ms. Allocated memory is still 333.4 MB. Free memory is still 314.0 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-06 21:13:13,134 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.15 ms. Allocated memory is still 333.4 MB. Free memory was 312.9 MB in the beginning and 311.4 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-06 21:13:13,134 INFO L168 Benchmark]: Boogie Preprocessor took 15.06 ms. Allocated memory is still 333.4 MB. Free memory was 311.3 MB in the beginning and 310.4 MB in the end (delta: 954.3 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-06 21:13:13,135 INFO L168 Benchmark]: RCFGBuilder took 248.98 ms. Allocated memory is still 333.4 MB. Free memory was 310.3 MB in the beginning and 297.8 MB in the end (delta: 12.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. [2021-06-06 21:13:13,135 INFO L168 Benchmark]: TraceAbstraction took 854333.13 ms. Allocated memory was 333.4 MB in the beginning and 939.5 MB in the end (delta: 606.1 MB). Free memory was 297.4 MB in the beginning and 734.6 MB in the end (delta: -437.2 MB). Peak memory consumption was 947.6 MB. Max. memory is 16.0 GB. [2021-06-06 21:13:13,138 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 0.15 ms. Allocated memory is still 333.4 MB. Free memory is still 314.0 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 24.15 ms. Allocated memory is still 333.4 MB. Free memory was 312.9 MB in the beginning and 311.4 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 15.06 ms. Allocated memory is still 333.4 MB. Free memory was 311.3 MB in the beginning and 310.4 MB in the end (delta: 954.3 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 248.98 ms. Allocated memory is still 333.4 MB. Free memory was 310.3 MB in the beginning and 297.8 MB in the end (delta: 12.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. * TraceAbstraction took 854333.13 ms. Allocated memory was 333.4 MB in the beginning and 939.5 MB in the end (delta: 606.1 MB). Free memory was 297.4 MB in the beginning and 734.6 MB in the end (delta: -437.2 MB). Peak memory consumption was 947.6 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 342, positive: 307, positive conditional: 307, positive unconditional: 0, negative: 35, negative conditional: 35, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: DistributingIndependenceRelation.Independence Queries: [ total: 307, positive: 307, positive conditional: 307, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DistributingIndependenceRelation.Statistics on underlying relations: [ CachedIndependenceRelation.Independence Queries: [ total: 307, positive: 307, positive conditional: 0, positive unconditional: 307, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 77, positive: 77, positive conditional: 0, positive unconditional: 77, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 77, positive: 77, positive conditional: 0, positive unconditional: 77, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 307, positive: 230, positive conditional: 0, positive unconditional: 230, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 77, unknown conditional: 0, unknown unconditional: 77] , Statistics on independence cache: Total cache size (in pairs): 77, Positive cache size: 77, Positive conditional cache size: 0, Positive unconditional cache size: 77, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, SemanticConditionEliminator.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 77, Positive cache size: 77, Positive conditional cache size: 0, Positive unconditional cache size: 77, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Eliminated conditions: 0, SemanticConditionEliminator.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 77, Positive cache size: 77, Positive conditional cache size: 0, Positive unconditional cache size: 77, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Eliminated conditions: 0 ], Maximal queried relation: 0, Independence queries for same thread: 35 - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while PartialOrderCegarLoop was analyzing trace of length 30 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while QuantifierPusher was running 452 iterations of DualJunctionQuantifierElimination. - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 9 procedures, 74 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: TIMEOUT, OverallTime: 854223.1ms, OverallIterations: 3, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 14.9ms, PartialOrderReductionTime: 195.6ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 18.2ms SsaConstructionTime, 51.9ms SatisfiabilityAnalysisTime, 147.1ms InterpolantComputationTime, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 41 ConstructedInterpolants, 0 QuantifiedInterpolants, 161 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 1/1 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown