/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-DelaySleepPersistent-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/cutoff_test.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-98707888a4ba860d5b57d27ee0e051c5b948cbbf-9870788 [2021-06-02 07:05:39,863 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-02 07:05:39,865 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-02 07:05:39,895 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-02 07:05:39,895 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-02 07:05:39,898 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-02 07:05:39,900 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-02 07:05:39,904 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-02 07:05:39,905 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-02 07:05:39,908 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-02 07:05:39,909 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-02 07:05:39,910 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-02 07:05:39,910 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-02 07:05:39,912 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-02 07:05:39,913 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-02 07:05:39,913 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-02 07:05:39,915 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-02 07:05:39,916 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-02 07:05:39,918 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-02 07:05:39,922 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-02 07:05:39,922 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-02 07:05:39,923 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-02 07:05:39,924 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-02 07:05:39,925 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-02 07:05:39,930 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-06-02 07:05:39,930 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-06-02 07:05:39,930 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-06-02 07:05:39,932 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-06-02 07:05:39,932 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-06-02 07:05:39,932 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-06-02 07:05:39,933 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-06-02 07:05:39,933 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-06-02 07:05:39,934 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-06-02 07:05:39,934 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-06-02 07:05:39,935 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-06-02 07:05:39,935 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-06-02 07:05:39,936 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-06-02 07:05:39,936 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-06-02 07:05:39,936 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-06-02 07:05:39,936 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-06-02 07:05:39,937 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-06-02 07:05:39,940 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-DelaySleepPersistent-NoLbe.epf [2021-06-02 07:05:39,967 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-02 07:05:39,968 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-02 07:05:39,968 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-02 07:05:39,968 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-02 07:05:39,970 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-02 07:05:39,970 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-02 07:05:39,970 INFO L138 SettingsManager]: * Use SBE=true [2021-06-02 07:05:39,971 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-02 07:05:39,971 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-02 07:05:39,971 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-02 07:05:39,971 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-02 07:05:39,971 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-02 07:05:39,972 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-02 07:05:39,972 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-02 07:05:39,972 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-02 07:05:39,972 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-02 07:05:39,972 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-02 07:05:39,972 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-02 07:05:39,972 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-02 07:05:39,972 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-02 07:05:39,972 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-02 07:05:39,973 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-02 07:05:39,973 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-02 07:05:39,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-02 07:05:39,973 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-02 07:05:39,973 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-02 07:05:39,973 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-02 07:05:39,973 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-02 07:05:39,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-02 07:05:39,973 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-02 07:05:39,973 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-02 07:05:39,974 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-02 07:05:39,974 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_DELAY_SET [2021-06-02 07:05:39,974 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-02 07:05:40,247 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-02 07:05:40,265 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-02 07:05:40,267 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-02 07:05:40,268 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-02 07:05:40,269 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-02 07:05:40,270 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/cutoff_test.bpl [2021-06-02 07:05:40,270 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/cutoff_test.bpl' [2021-06-02 07:05:40,291 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-02 07:05:40,292 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-02 07:05:40,293 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-02 07:05:40,294 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-02 07:05:40,294 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-02 07:05:40,303 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.06 07:05:40" (1/1) ... [2021-06-02 07:05:40,308 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.06 07:05:40" (1/1) ... [2021-06-02 07:05:40,316 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-02 07:05:40,317 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-02 07:05:40,317 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-02 07:05:40,318 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-02 07:05:40,323 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.06 07:05:40" (1/1) ... [2021-06-02 07:05:40,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.06 07:05:40" (1/1) ... [2021-06-02 07:05:40,323 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.06 07:05:40" (1/1) ... [2021-06-02 07:05:40,324 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.06 07:05:40" (1/1) ... [2021-06-02 07:05:40,326 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.06 07:05:40" (1/1) ... [2021-06-02 07:05:40,327 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.06 07:05:40" (1/1) ... [2021-06-02 07:05:40,328 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.06 07:05:40" (1/1) ... [2021-06-02 07:05:40,329 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-02 07:05:40,330 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-02 07:05:40,331 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-02 07:05:40,331 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-02 07:05:40,332 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.06 07:05:40" (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 [2021-06-02 07:05:40,398 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-02 07:05:40,398 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-02 07:05:40,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-02 07:05:40,398 INFO L124 BoogieDeclarations]: Specification and implementation of procedure Thread1 given in one single declaration [2021-06-02 07:05:40,398 INFO L130 BoogieDeclarations]: Found specification of procedure Thread1 [2021-06-02 07:05:40,399 INFO L138 BoogieDeclarations]: Found implementation of procedure Thread1 [2021-06-02 07:05:40,399 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-02 07:05:40,520 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-02 07:05:40,520 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-06-02 07:05:40,522 INFO L202 PluginConnector]: Adding new model cutoff_test.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.06 07:05:40 BoogieIcfgContainer [2021-06-02 07:05:40,522 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-02 07:05:40,524 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-02 07:05:40,524 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-02 07:05:40,526 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-02 07:05:40,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 02.06 07:05:40" (1/2) ... [2021-06-02 07:05:40,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@419fe2d0 and model type cutoff_test.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.06 07:05:40, skipping insertion in model container [2021-06-02 07:05:40,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "cutoff_test.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.06 07:05:40" (2/2) ... [2021-06-02 07:05:40,528 INFO L111 eAbstractionObserver]: Analyzing ICFG cutoff_test.bpl [2021-06-02 07:05:40,534 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-02 07:05:40,534 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-02 07:05:40,534 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-02 07:05:40,535 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-02 07:05:40,563 INFO L149 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2021-06-02 07:05:40,579 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 [2021-06-02 07:05:40,649 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-02 07:05:40,649 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-02 07:05:40,649 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-02 07:05:40,649 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-02 07:05:40,649 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-02 07:05:40,649 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-02 07:05:40,650 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-02 07:05:40,650 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-02 07:05:40,751 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-02 07:05:40,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-02 07:05:40,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1686034903, now seen corresponding path program 1 times [2021-06-02 07:05:40,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-02 07:05:40,763 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343364765] [2021-06-02 07:05:40,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-02 07:05:40,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-02 07:05:40,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-02 07:05:40,870 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-02 07:05:40,870 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343364765] [2021-06-02 07:05:40,871 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343364765] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-02 07:05:40,871 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-02 07:05:40,871 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-06-02 07:05:40,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481757008] [2021-06-02 07:05:40,874 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-02 07:05:40,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-02 07:05:40,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-02 07:05:40,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-02 07:05:40,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-02 07:05:40,888 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-02 07:05:40,890 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2021-06-02 07:05:40,890 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-02 07:05:40,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-02 07:05:40,937 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-02 07:05:40,937 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-02 07:05:40,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-02 07:05:40,937 INFO L82 PathProgramCache]: Analyzing trace with hash -1685051800, now seen corresponding path program 1 times [2021-06-02 07:05:40,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-02 07:05:40,937 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022924050] [2021-06-02 07:05:40,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-02 07:05:40,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-02 07:05:40,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-02 07:05:40,977 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-02 07:05:40,977 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022924050] [2021-06-02 07:05:40,978 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022924050] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-02 07:05:40,978 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-02 07:05:40,978 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-02 07:05:40,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934591372] [2021-06-02 07:05:40,979 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-02 07:05:40,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-02 07:05:40,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-02 07:05:40,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-02 07:05:40,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-02 07:05:40,980 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-02 07:05:40,980 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 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) [2021-06-02 07:05:40,980 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-02 07:05:40,980 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-02 07:05:41,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-02 07:05:41,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-02 07:05:41,041 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-02 07:05:41,041 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-02 07:05:41,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-02 07:05:41,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1510774450, now seen corresponding path program 2 times [2021-06-02 07:05:41,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-02 07:05:41,042 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456836410] [2021-06-02 07:05:41,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-02 07:05:41,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-02 07:05:41,046 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-02 07:05:41,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-02 07:05:41,048 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-02 07:05:41,058 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-02 07:05:41,059 INFO L655 BasicCegarLoop]: Counterexample might be feasible [2021-06-02 07:05:41,059 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-02 07:05:41,065 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-02 07:05:41,070 INFO L202 PluginConnector]: Adding new model cutoff_test.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.06 07:05:41 BasicIcfg [2021-06-02 07:05:41,070 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-02 07:05:41,074 INFO L168 Benchmark]: Toolchain (without parser) took 778.75 ms. Allocated memory is still 358.6 MB. Free memory was 337.7 MB in the beginning and 319.2 MB in the end (delta: 18.5 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.0 GB. [2021-06-02 07:05:41,075 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.13 ms. Allocated memory is still 358.6 MB. Free memory is still 338.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-02 07:05:41,076 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.18 ms. Allocated memory is still 358.6 MB. Free memory was 337.5 MB in the beginning and 336.1 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-02 07:05:41,077 INFO L168 Benchmark]: Boogie Preprocessor took 12.57 ms. Allocated memory is still 358.6 MB. Free memory was 336.1 MB in the beginning and 335.2 MB in the end (delta: 918.3 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-02 07:05:41,078 INFO L168 Benchmark]: RCFGBuilder took 191.58 ms. Allocated memory is still 358.6 MB. Free memory was 335.2 MB in the beginning and 326.6 MB in the end (delta: 8.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. [2021-06-02 07:05:41,081 INFO L168 Benchmark]: TraceAbstraction took 546.49 ms. Allocated memory is still 358.6 MB. Free memory was 326.2 MB in the beginning and 319.2 MB in the end (delta: 7.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.0 GB. [2021-06-02 07:05:41,083 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 0.13 ms. Allocated memory is still 358.6 MB. Free memory is still 338.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 23.18 ms. Allocated memory is still 358.6 MB. Free memory was 337.5 MB in the beginning and 336.1 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Preprocessor took 12.57 ms. Allocated memory is still 358.6 MB. Free memory was 336.1 MB in the beginning and 335.2 MB in the end (delta: 918.3 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 191.58 ms. Allocated memory is still 358.6 MB. Free memory was 335.2 MB in the beginning and 326.6 MB in the end (delta: 8.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. * TraceAbstraction took 546.49 ms. Allocated memory is still 358.6 MB. Free memory was 326.2 MB in the beginning and 319.2 MB in the end (delta: 7.0 MB). Peak memory consumption was 6.3 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: 36, positive: 16, positive conditional: 16, positive unconditional: 0, negative: 20, negative conditional: 20, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: DistributingIndependenceRelation.Independence Queries: [ total: 17, positive: 16, positive conditional: 16, positive unconditional: 0, negative: 1, negative conditional: 1, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DistributingIndependenceRelation.Statistics on underlying relations: [ CachedIndependenceRelation.Independence Queries: [ total: 189, positive: 182, positive conditional: 0, positive unconditional: 182, 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: 128, positive: 123, positive conditional: 0, positive unconditional: 123, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 128, positive: 121, positive conditional: 0, positive unconditional: 121, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Independence Queries: [ total: 7, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 9, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 7, negative conditional: 2, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 73, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 64, negative conditional: 5, negative unconditional: 59, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 189, positive: 59, positive conditional: 0, positive unconditional: 59, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 128, unknown conditional: 0, unknown unconditional: 128] , Statistics on independence cache: Total cache size (in pairs): 130, Positive cache size: 123, Positive conditional cache size: 0, Positive unconditional cache size: 123, Negative cache size: 7, Negative conditional cache size: 2, Negative unconditional cache size: 5, SemanticConditionEliminator.Independence Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 2, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 2, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 9, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 7, negative conditional: 2, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 73, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 64, negative conditional: 5, negative unconditional: 59, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 2, unknown conditional: 2, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 130, Positive cache size: 123, Positive conditional cache size: 0, Positive unconditional cache size: 123, Negative cache size: 7, Negative conditional cache size: 2, Negative unconditional cache size: 5, Eliminated conditions: 0, SemanticConditionEliminator.Independence Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 2, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 2, negative conditional: 2, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 9, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 7, negative conditional: 2, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 73, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 64, negative conditional: 5, negative unconditional: 59, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 2, unknown conditional: 2, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 130, Positive cache size: 123, Positive conditional cache size: 0, Positive unconditional cache size: 123, Negative cache size: 7, Negative conditional cache size: 2, Negative unconditional cache size: 5, Eliminated conditions: 0 ], Maximal queried relation: 2, Independence queries for same thread: 19 - StatisticsResult: Persistent set benchmarks Persistent set computation time[ms]: 119, Number of persistent set computation: 129, Number of trivial persistent sets: 127, Underlying independence relation: CachedIndependenceRelation.Independence Queries: [ total: 189, positive: 182, positive conditional: 0, positive unconditional: 182, 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: 128, positive: 123, positive conditional: 0, positive unconditional: 123, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 128, positive: 121, positive conditional: 0, positive unconditional: 121, negative: 7, negative conditional: 0, negative unconditional: 7, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Independence Queries: [ total: 7, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 5, negative conditional: 0, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 9, positive: 2, positive conditional: 0, positive unconditional: 2, negative: 7, negative conditional: 2, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 73, positive: 8, positive conditional: 0, positive unconditional: 8, negative: 64, negative conditional: 5, negative unconditional: 59, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 189, positive: 59, positive conditional: 0, positive unconditional: 59, negative: 2, negative conditional: 0, negative unconditional: 2, unknown: 128, unknown conditional: 0, unknown unconditional: 128] , Statistics on independence cache: Total cache size (in pairs): 130, Positive cache size: 123, Positive conditional cache size: 0, Positive unconditional cache size: 123, Negative cache size: 7, Negative conditional cache size: 2, Negative unconditional cache size: 5 - CounterExampleResult [Line: 26]: assertion can be violated assertion can be violated We found a FailurePath: [L20] FORK 0 fork 1 Thread1(); [L22] 0 x := 0; VAL [x=0] [L37] 1 x := x + 1; VAL [x=1] [L23] 0 x := 2 * x; VAL [x=2] [L25] JOIN 1 join 1; VAL [x=2] [L26] 0 assert x != 2; VAL [x=2] - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 3 procedures, 19 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 458.6ms, OverallIterations: 3, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8.6ms, PartialOrderReductionTime: 199.9ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 7, 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: 3.4ms SsaConstructionTime, 18.0ms SatisfiabilityAnalysisTime, 87.5ms InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 38 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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 proved your program to be incorrect! Received shutdown request...