/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-Sleep-NoLbe-New_States.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/word-symm.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-a865e3bea3ade1065a4c95009cfa501fe03c5538-a865e3b [2021-02-20 00:14:06,656 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-20 00:14:06,657 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-20 00:14:06,687 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-20 00:14:06,732 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-Sleep-NoLbe-New_States.epf [2021-02-20 00:14:06,761 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-20 00:14:06,761 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-20 00:14:06,761 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-02-20 00:14:06,762 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-02-20 00:14:06,764 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-20 00:14:06,764 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-20 00:14:06,764 INFO L138 SettingsManager]: * Use SBE=true [2021-02-20 00:14:06,764 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-20 00:14:06,764 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-20 00:14:06,764 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-20 00:14:06,765 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-20 00:14:06,765 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-20 00:14:06,765 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-20 00:14:06,765 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-20 00:14:06,765 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-20 00:14:06,765 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-20 00:14:06,766 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-20 00:14:06,766 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-20 00:14:06,766 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-20 00:14:06,766 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-20 00:14:06,766 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-20 00:14:06,766 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-20 00:14:06,766 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-20 00:14:06,766 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-20 00:14:06,766 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-20 00:14:06,766 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-20 00:14:06,766 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-20 00:14:06,766 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-20 00:14:06,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-20 00:14:06,767 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-02-20 00:14:06,767 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-02-20 00:14:06,767 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-20 00:14:06,767 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2021-02-20 00:14:06,767 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-20 00:14:07,037 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-20 00:14:07,054 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-20 00:14:07,056 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-20 00:14:07,057 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-02-20 00:14:07,058 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-02-20 00:14:07,058 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/word-symm.wvr.bpl [2021-02-20 00:14:07,058 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/word-symm.wvr.bpl' [2021-02-20 00:14:07,085 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-20 00:14:07,090 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-20 00:14:07,091 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-02-20 00:14:07,092 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-02-20 00:14:07,092 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-02-20 00:14:07,100 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "word-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 12:14:07" (1/1) ... [2021-02-20 00:14:07,110 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "word-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 12:14:07" (1/1) ... [2021-02-20 00:14:07,115 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-02-20 00:14:07,117 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-20 00:14:07,117 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-20 00:14:07,117 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-20 00:14:07,124 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "word-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 12:14:07" (1/1) ... [2021-02-20 00:14:07,125 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "word-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 12:14:07" (1/1) ... [2021-02-20 00:14:07,130 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "word-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 12:14:07" (1/1) ... [2021-02-20 00:14:07,130 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "word-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 12:14:07" (1/1) ... [2021-02-20 00:14:07,133 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "word-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 12:14:07" (1/1) ... [2021-02-20 00:14:07,135 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "word-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 12:14:07" (1/1) ... [2021-02-20 00:14:07,136 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "word-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 12:14:07" (1/1) ... [2021-02-20 00:14:07,137 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-20 00:14:07,137 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-20 00:14:07,137 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-20 00:14:07,137 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-20 00:14:07,138 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "word-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 12:14:07" (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 [2021-02-20 00:14:07,199 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-02-20 00:14:07,199 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-02-20 00:14:07,199 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-02-20 00:14:07,199 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-02-20 00:14:07,199 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-02-20 00:14:07,199 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-02-20 00:14:07,200 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-02-20 00:14:07,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-20 00:14:07,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-20 00:14:07,202 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-02-20 00:14:07,474 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-20 00:14:07,474 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-20 00:14:07,476 INFO L202 PluginConnector]: Adding new model word-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 12:14:07 BoogieIcfgContainer [2021-02-20 00:14:07,476 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-20 00:14:07,477 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-20 00:14:07,477 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-20 00:14:07,479 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-20 00:14:07,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "word-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 20.02 12:14:07" (1/2) ... [2021-02-20 00:14:07,479 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d4d81c1 and model type word-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 12:14:07, skipping insertion in model container [2021-02-20 00:14:07,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "word-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 12:14:07" (2/2) ... [2021-02-20 00:14:07,480 INFO L111 eAbstractionObserver]: Analyzing ICFG word-symm.wvr.bpl [2021-02-20 00:14:07,484 WARN L142 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-02-20 00:14:07,484 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-20 00:14:07,487 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-20 00:14:07,488 INFO L323 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-02-20 00:14:07,509 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-02-20 00:14:07,520 INFO L253 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 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 [2021-02-20 00:14:07,536 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-20 00:14:07,536 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-20 00:14:07,536 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-20 00:14:07,536 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-20 00:14:07,536 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-20 00:14:07,536 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-20 00:14:07,536 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-20 00:14:07,536 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-20 00:14:07,557 INFO L428 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-20 00:14:07,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-20 00:14:07,560 INFO L82 PathProgramCache]: Analyzing trace with hash 1160854268, now seen corresponding path program 1 times [2021-02-20 00:14:07,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-20 00:14:07,567 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132345923] [2021-02-20 00:14:07,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-20 00:14:07,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-20 00:14:07,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-20 00:14:07,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132345923] [2021-02-20 00:14:07,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-20 00:14:07,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-20 00:14:07,739 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738845492] [2021-02-20 00:14:07,741 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-20 00:14:07,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-20 00:14:07,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-20 00:14:07,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-02-20 00:14:07,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-02-20 00:14:07,754 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-02-20 00:14:07,756 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 6 states have internal predecessors, (12), 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) [2021-02-20 00:14:07,757 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-02-20 00:14:07,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-20 00:14:07,954 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-20 00:14:07,954 INFO L428 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-20 00:14:07,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-20 00:14:07,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1597032663, now seen corresponding path program 1 times [2021-02-20 00:14:07,956 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-20 00:14:07,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656682475] [2021-02-20 00:14:07,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-20 00:14:07,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-20 00:14:08,010 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-20 00:14:08,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656682475] [2021-02-20 00:14:08,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-20 00:14:08,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-20 00:14:08,011 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340742850] [2021-02-20 00:14:08,012 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-20 00:14:08,012 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-20 00:14:08,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-20 00:14:08,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-20 00:14:08,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-02-20 00:14:08,013 INFO L480 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-02-20 00:14:08,013 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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) [2021-02-20 00:14:08,013 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-02-20 00:14:08,013 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-02-20 00:14:08,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-20 00:14:08,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-20 00:14:08,103 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-20 00:14:08,104 INFO L428 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-02-20 00:14:08,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-20 00:14:08,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1208520649, now seen corresponding path program 1 times [2021-02-20 00:14:08,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-20 00:14:08,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381564093] [2021-02-20 00:14:08,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-20 00:14:08,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-20 00:14:08,135 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-20 00:14:08,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-20 00:14:08,142 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-20 00:14:08,157 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-20 00:14:08,157 INFO L607 BasicCegarLoop]: Counterexample might be feasible [2021-02-20 00:14:08,157 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-20 00:14:08,174 INFO L202 PluginConnector]: Adding new model word-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.02 12:14:08 BasicIcfg [2021-02-20 00:14:08,175 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-20 00:14:08,176 INFO L168 Benchmark]: Toolchain (without parser) took 1089.25 ms. Allocated memory is still 352.3 MB. Free memory was 332.5 MB in the beginning and 267.0 MB in the end (delta: 65.5 MB). Peak memory consumption was 67.2 MB. Max. memory is 16.0 GB. [2021-02-20 00:14:08,176 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 352.3 MB. Free memory is still 333.7 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-02-20 00:14:08,177 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.79 ms. Allocated memory is still 352.3 MB. Free memory was 332.0 MB in the beginning and 330.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-02-20 00:14:08,177 INFO L168 Benchmark]: Boogie Preprocessor took 19.95 ms. Allocated memory is still 352.3 MB. Free memory was 330.6 MB in the beginning and 329.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-02-20 00:14:08,179 INFO L168 Benchmark]: RCFGBuilder took 338.52 ms. Allocated memory is still 352.3 MB. Free memory was 329.4 MB in the beginning and 335.1 MB in the end (delta: -5.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. [2021-02-20 00:14:08,179 INFO L168 Benchmark]: TraceAbstraction took 698.04 ms. Allocated memory is still 352.3 MB. Free memory was 335.1 MB in the beginning and 267.0 MB in the end (delta: 68.1 MB). Peak memory consumption was 67.1 MB. Max. memory is 16.0 GB. [2021-02-20 00:14:08,183 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 352.3 MB. Free memory is still 333.7 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 24.79 ms. Allocated memory is still 352.3 MB. Free memory was 332.0 MB in the beginning and 330.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 19.95 ms. Allocated memory is still 352.3 MB. Free memory was 330.6 MB in the beginning and 329.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 338.52 ms. Allocated memory is still 352.3 MB. Free memory was 329.4 MB in the beginning and 335.1 MB in the end (delta: -5.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 16.0 GB. * TraceAbstraction took 698.04 ms. Allocated memory is still 352.3 MB. Free memory was 335.1 MB in the beginning and 267.0 MB in the end (delta: 68.1 MB). Peak memory consumption was 67.1 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 89]: assertion can be violated assertion can be violated We found a FailurePath: [L84] FORK 0 fork 1 thread1(); [L85] FORK 0 fork 2, 2 thread2(); [L26] 1 assume count_1 == count_4; [L27] 1 i_6 := 0; [L28] 1 break_7 := false; VAL [break_7=false, count_1=0, count_4=0, i_6=0] [L39] 1 assume !(!break_7 && i_6 < len_2 && i_6 < len_5); [L40] 1 result_8 := (if !break_7 then len_2 - len_5 else result_8); VAL [break_7=false, count_1=0, count_4=0, i_6=0, len_2=0, len_5=-1, result_8=1] [L86] JOIN 1 join 1; VAL [break_7=false, count_1=0, count_4=0, i_6=0, len_2=0, len_5=-1, result_11=2, result_8=1] [L87] JOIN 2 join 2, 2; VAL [break_7=false, count_1=0, count_4=0, i_6=0, len_2=0, len_5=-1, result_11=2, result_8=1] [L88] 0 assume !((if result_8 < 0 then -1 else (if result_8 > 0 then 1 else 0)) == 0 - (if result_11 < 0 then -1 else (if result_11 > 0 then 1 else 0))); VAL [break_7=false, count_1=0, count_4=0, i_6=0, len_2=0, len_5=-1, result_11=2, result_8=1] [L89] 0 assert false; VAL [break_7=false, count_1=0, count_4=0, i_6=0, len_2=0, len_5=-1, result_11=2, result_8=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 3, TraceHistogramMax: 0, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 1163 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 proved your program to be incorrect! Received shutdown request...