/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-FA-NoLbe-Separate.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/ForkInLoop02-Incrementer.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-29289db [2021-06-05 13:12:32,930 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 13:12:32,933 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 13:12:32,974 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-05 13:12:33,034 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-FA-NoLbe-Separate.epf [2021-06-05 13:12:33,073 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 13:12:33,073 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 13:12:33,074 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 13:12:33,074 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 13:12:33,077 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 13:12:33,077 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 13:12:33,077 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 13:12:33,078 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 13:12:33,078 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 13:12:33,078 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 13:12:33,079 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 13:12:33,079 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 13:12:33,079 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 13:12:33,079 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 13:12:33,079 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 13:12:33,079 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 13:12:33,079 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 13:12:33,080 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 13:12:33,080 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 13:12:33,080 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 13:12:33,080 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 13:12:33,080 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 13:12:33,080 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 13:12:33,080 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 13:12:33,081 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 13:12:33,081 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 13:12:33,081 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 13:12:33,081 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 13:12:33,081 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 13:12:33,081 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 13:12:33,082 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 13:12:33,082 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2021-06-05 13:12:33,082 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 13:12:33,389 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 13:12:33,407 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 13:12:33,409 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 13:12:33,410 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-05 13:12:33,411 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-05 13:12:33,412 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/ForkInLoop02-Incrementer.bpl [2021-06-05 13:12:33,412 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/ForkInLoop02-Incrementer.bpl' [2021-06-05 13:12:33,441 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 13:12:33,442 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-05 13:12:33,443 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 13:12:33,444 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 13:12:33,444 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 13:12:33,456 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ForkInLoop02-Incrementer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 01:12:33" (1/1) ... [2021-06-05 13:12:33,463 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ForkInLoop02-Incrementer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 01:12:33" (1/1) ... [2021-06-05 13:12:33,471 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 13:12:33,472 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 13:12:33,473 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 13:12:33,473 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 13:12:33,480 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ForkInLoop02-Incrementer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 01:12:33" (1/1) ... [2021-06-05 13:12:33,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ForkInLoop02-Incrementer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 01:12:33" (1/1) ... [2021-06-05 13:12:33,481 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ForkInLoop02-Incrementer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 01:12:33" (1/1) ... [2021-06-05 13:12:33,481 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ForkInLoop02-Incrementer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 01:12:33" (1/1) ... [2021-06-05 13:12:33,484 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ForkInLoop02-Incrementer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 01:12:33" (1/1) ... [2021-06-05 13:12:33,486 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ForkInLoop02-Incrementer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 01:12:33" (1/1) ... [2021-06-05 13:12:33,487 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ForkInLoop02-Incrementer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 01:12:33" (1/1) ... [2021-06-05 13:12:33,487 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 13:12:33,489 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 13:12:33,489 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 13:12:33,490 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 13:12:33,492 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ForkInLoop02-Incrementer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 01:12:33" (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 [2021-06-05 13:12:33,572 INFO L124 BoogieDeclarations]: Specification and implementation of procedure foo given in one single declaration [2021-06-05 13:12:33,573 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-06-05 13:12:33,573 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-06-05 13:12:33,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 13:12:33,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 13:12:33,575 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-05 13:12:33,704 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 13:12:33,705 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-06-05 13:12:33,706 INFO L202 PluginConnector]: Adding new model ForkInLoop02-Incrementer.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 01:12:33 BoogieIcfgContainer [2021-06-05 13:12:33,706 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 13:12:33,708 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 13:12:33,708 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 13:12:33,711 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 13:12:33,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ForkInLoop02-Incrementer.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 01:12:33" (1/2) ... [2021-06-05 13:12:33,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c831159 and model type ForkInLoop02-Incrementer.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 01:12:33, skipping insertion in model container [2021-06-05 13:12:33,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ForkInLoop02-Incrementer.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 01:12:33" (2/2) ... [2021-06-05 13:12:33,713 INFO L111 eAbstractionObserver]: Analyzing ICFG ForkInLoop02-Incrementer.bpl [2021-06-05 13:12:33,722 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 13:12:33,723 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 13:12:33,723 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-05 13:12:33,724 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 13:12:33,761 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-05 13:12:33,794 INFO L255 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-06-05 13:12:33,821 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 13:12:33,821 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 13:12:33,822 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 13:12:33,822 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 13:12:33,822 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 13:12:33,822 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 13:12:33,822 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 13:12:33,822 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 13:12:33,831 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 13 places, 10 transitions, 25 flow [2021-06-05 13:12:33,841 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 24 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 23 states have internal predecessors, (35), 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) [2021-06-05 13:12:33,847 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 23 states have internal predecessors, (35), 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) [2021-06-05 13:12:33,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-06-05 13:12:33,852 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:33,852 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-06-05 13:12:33,853 INFO L430 AbstractCegarLoop]: === Iteration 1 === [fooErr0ASSERT_VIOLATIONASSERT, fooErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:33,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:33,859 INFO L82 PathProgramCache]: Analyzing trace with hash 42091544, now seen corresponding path program 1 times [2021-06-05 13:12:33,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:33,868 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208620380] [2021-06-05 13:12:33,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:33,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:34,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:34,028 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:34,028 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208620380] [2021-06-05 13:12:34,029 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208620380] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:34,029 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:34,029 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 13:12:34,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328453241] [2021-06-05 13:12:34,033 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-05 13:12:34,033 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:34,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-05 13:12:34,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-05 13:12:34,048 INFO L87 Difference]: Start difference. First operand has 24 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 23 states have internal predecessors, (35), 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) Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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) [2021-06-05 13:12:34,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:34,070 INFO L93 Difference]: Finished difference Result 20 states and 28 transitions. [2021-06-05 13:12:34,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-05 13:12:34,072 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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) Word has length 5 [2021-06-05 13:12:34,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:34,077 INFO L225 Difference]: With dead ends: 20 [2021-06-05 13:12:34,077 INFO L226 Difference]: Without dead ends: 0 [2021-06-05 13:12:34,082 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-05 13:12:34,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-05 13:12:34,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-05 13:12:34,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-06-05 13:12:34,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-05 13:12:34,100 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 5 [2021-06-05 13:12:34,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:34,100 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-05 13:12:34,100 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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) [2021-06-05 13:12:34,100 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-05 13:12:34,101 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 13:12:34,101 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 13:12:34,102 INFO L315 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE (1/2) [2021-06-05 13:12:34,104 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-05 13:12:34,108 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 13:12:34,109 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 13:12:34,109 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 13:12:34,109 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 13:12:34,109 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 13:12:34,110 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 13:12:34,110 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 13:12:34,110 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == InUseError======== [2021-06-05 13:12:34,111 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 13 places, 10 transitions, 25 flow [2021-06-05 13:12:34,115 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 24 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 23 states have internal predecessors, (35), 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) [2021-06-05 13:12:34,116 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 19 states have (on average 1.8421052631578947) internal successors, (35), 23 states have internal predecessors, (35), 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) [2021-06-05 13:12:34,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-06-05 13:12:34,117 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:34,117 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-06-05 13:12:34,117 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-06-05 13:12:34,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:34,118 INFO L82 PathProgramCache]: Analyzing trace with hash 42091268, now seen corresponding path program 1 times [2021-06-05 13:12:34,118 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:34,119 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352678226] [2021-06-05 13:12:34,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:34,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-05 13:12:34,130 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-05 13:12:34,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-05 13:12:34,137 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-05 13:12:34,148 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-05 13:12:34,149 INFO L622 BasicCegarLoop]: Counterexample might be feasible [2021-06-05 13:12:34,149 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 13:12:34,149 INFO L315 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2021-06-05 13:12:34,150 WARN L242 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-05 13:12:34,150 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2021-06-05 13:12:34,178 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-05 13:12:34,179 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-06-05 13:12:34,180 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 13:12:34,180 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 13:12:34,180 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 13:12:34,180 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 13:12:34,180 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 13:12:34,180 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 13:12:34,181 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 13:12:34,181 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 13:12:34,182 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 20 places, 15 transitions, 42 flow [2021-06-05 13:12:34,190 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 119 states, 108 states have (on average 2.462962962962963) internal successors, (266), 118 states have internal predecessors, (266), 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) [2021-06-05 13:12:34,191 INFO L276 IsEmpty]: Start isEmpty. Operand has 119 states, 108 states have (on average 2.462962962962963) internal successors, (266), 118 states have internal predecessors, (266), 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) [2021-06-05 13:12:34,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-06-05 13:12:34,191 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:34,191 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-06-05 13:12:34,192 INFO L430 AbstractCegarLoop]: === Iteration 1 === [fooErr0ASSERT_VIOLATIONASSERT, fooErr0ASSERT_VIOLATIONASSERT, fooErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:34,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:34,192 INFO L82 PathProgramCache]: Analyzing trace with hash 56409963, now seen corresponding path program 1 times [2021-06-05 13:12:34,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:34,192 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674875045] [2021-06-05 13:12:34,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:34,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:34,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:34,227 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:34,227 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674875045] [2021-06-05 13:12:34,227 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674875045] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:34,227 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:34,227 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 13:12:34,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419137846] [2021-06-05 13:12:34,228 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-05 13:12:34,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:34,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-05 13:12:34,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-05 13:12:34,230 INFO L87 Difference]: Start difference. First operand has 119 states, 108 states have (on average 2.462962962962963) internal successors, (266), 118 states have internal predecessors, (266), 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) Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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) [2021-06-05 13:12:34,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:34,283 INFO L93 Difference]: Finished difference Result 108 states and 238 transitions. [2021-06-05 13:12:34,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-05 13:12:34,286 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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) Word has length 5 [2021-06-05 13:12:34,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:34,290 INFO L225 Difference]: With dead ends: 108 [2021-06-05 13:12:34,290 INFO L226 Difference]: Without dead ends: 87 [2021-06-05 13:12:34,290 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-05 13:12:34,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-06-05 13:12:34,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2021-06-05 13:12:34,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 81 states have (on average 2.2962962962962963) internal successors, (186), 86 states have internal predecessors, (186), 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) [2021-06-05 13:12:34,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 186 transitions. [2021-06-05 13:12:34,326 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 186 transitions. Word has length 5 [2021-06-05 13:12:34,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:34,326 INFO L482 AbstractCegarLoop]: Abstraction has 87 states and 186 transitions. [2021-06-05 13:12:34,326 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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) [2021-06-05 13:12:34,327 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 186 transitions. [2021-06-05 13:12:34,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-06-05 13:12:34,327 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:34,327 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:34,327 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-05 13:12:34,328 INFO L430 AbstractCegarLoop]: === Iteration 2 === [fooErr0ASSERT_VIOLATIONASSERT, fooErr0ASSERT_VIOLATIONASSERT, fooErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:34,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:34,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1176743563, now seen corresponding path program 1 times [2021-06-05 13:12:34,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:34,329 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941842910] [2021-06-05 13:12:34,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:34,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:34,356 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:34,356 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:34,356 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941842910] [2021-06-05 13:12:34,357 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941842910] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 13:12:34,357 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453045152] [2021-06-05 13:12:34,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 13:12:34,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:34,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 4 conjunts are in the unsatisfiable core [2021-06-05 13:12:34,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 13:12:34,445 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:34,446 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453045152] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 13:12:34,446 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 13:12:34,446 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-06-05 13:12:34,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786934053] [2021-06-05 13:12:34,447 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 13:12:34,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:34,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 13:12:34,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-06-05 13:12:34,449 INFO L87 Difference]: Start difference. First operand 87 states and 186 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 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) [2021-06-05 13:12:34,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:34,468 INFO L93 Difference]: Finished difference Result 59 states and 117 transitions. [2021-06-05 13:12:34,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 13:12:34,469 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 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) Word has length 8 [2021-06-05 13:12:34,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:34,469 INFO L225 Difference]: With dead ends: 59 [2021-06-05 13:12:34,469 INFO L226 Difference]: Without dead ends: 0 [2021-06-05 13:12:34,470 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.4ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-06-05 13:12:34,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-05 13:12:34,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-05 13:12:34,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-06-05 13:12:34,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-05 13:12:34,471 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2021-06-05 13:12:34,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:34,471 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-05 13:12:34,471 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 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) [2021-06-05 13:12:34,471 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-05 13:12:34,472 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 13:12:34,695 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 13:12:34,696 INFO L315 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE (1/2) [2021-06-05 13:12:34,696 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-05 13:12:34,697 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 13:12:34,697 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 13:12:34,697 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 13:12:34,697 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 13:12:34,698 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 13:12:34,698 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 13:12:34,698 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 13:12:34,698 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == InUseError======== [2021-06-05 13:12:34,699 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 20 places, 15 transitions, 42 flow [2021-06-05 13:12:34,704 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 119 states, 108 states have (on average 2.462962962962963) internal successors, (266), 118 states have internal predecessors, (266), 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) [2021-06-05 13:12:34,705 INFO L276 IsEmpty]: Start isEmpty. Operand has 119 states, 108 states have (on average 2.462962962962963) internal successors, (266), 118 states have internal predecessors, (266), 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) [2021-06-05 13:12:34,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-06-05 13:12:34,706 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:34,706 INFO L521 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2021-06-05 13:12:34,706 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-06-05 13:12:34,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:34,707 INFO L82 PathProgramCache]: Analyzing trace with hash -1624858962, now seen corresponding path program 1 times [2021-06-05 13:12:34,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:34,707 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126837129] [2021-06-05 13:12:34,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:34,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-05 13:12:34,716 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-05 13:12:34,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-05 13:12:34,720 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-05 13:12:34,721 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-05 13:12:34,721 INFO L622 BasicCegarLoop]: Counterexample might be feasible [2021-06-05 13:12:34,722 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-06-05 13:12:34,722 INFO L315 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2021-06-05 13:12:34,722 WARN L242 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-05 13:12:34,722 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2021-06-05 13:12:34,734 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2021-06-05 13:12:34,735 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-05 13:12:34,736 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 13:12:34,736 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 13:12:34,736 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 13:12:34,736 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 13:12:34,736 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 13:12:34,736 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 13:12:34,737 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 13:12:34,737 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 13:12:34,740 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 27 places, 20 transitions, 61 flow [2021-06-05 13:12:34,771 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 594 states, 571 states have (on average 3.1541155866900175) internal successors, (1801), 593 states have internal predecessors, (1801), 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) [2021-06-05 13:12:34,773 INFO L276 IsEmpty]: Start isEmpty. Operand has 594 states, 571 states have (on average 3.1541155866900175) internal successors, (1801), 593 states have internal predecessors, (1801), 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) [2021-06-05 13:12:34,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-06-05 13:12:34,774 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:34,774 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-06-05 13:12:34,775 INFO L430 AbstractCegarLoop]: === Iteration 1 === [fooErr0ASSERT_VIOLATIONASSERT, fooErr0ASSERT_VIOLATIONASSERT, fooErr0ASSERT_VIOLATIONASSERT, fooErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:34,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:34,776 INFO L82 PathProgramCache]: Analyzing trace with hash 75500163, now seen corresponding path program 1 times [2021-06-05 13:12:34,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:34,776 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611934634] [2021-06-05 13:12:34,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:34,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:34,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:34,806 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:34,806 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611934634] [2021-06-05 13:12:34,806 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611934634] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:12:34,806 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:12:34,806 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 13:12:34,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288064843] [2021-06-05 13:12:34,807 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-05 13:12:34,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:34,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-05 13:12:34,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-05 13:12:34,812 INFO L87 Difference]: Start difference. First operand has 594 states, 571 states have (on average 3.1541155866900175) internal successors, (1801), 593 states have internal predecessors, (1801), 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) Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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) [2021-06-05 13:12:34,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:34,880 INFO L93 Difference]: Finished difference Result 573 states and 1732 transitions. [2021-06-05 13:12:34,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-06-05 13:12:34,885 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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) Word has length 5 [2021-06-05 13:12:34,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:34,896 INFO L225 Difference]: With dead ends: 573 [2021-06-05 13:12:34,897 INFO L226 Difference]: Without dead ends: 532 [2021-06-05 13:12:34,897 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.2ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-06-05 13:12:34,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 532 states. [2021-06-05 13:12:34,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 532 to 532. [2021-06-05 13:12:34,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 532 states, 515 states have (on average 3.0912621359223302) internal successors, (1592), 531 states have internal predecessors, (1592), 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) [2021-06-05 13:12:34,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 1592 transitions. [2021-06-05 13:12:34,989 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 1592 transitions. Word has length 5 [2021-06-05 13:12:34,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:34,989 INFO L482 AbstractCegarLoop]: Abstraction has 532 states and 1592 transitions. [2021-06-05 13:12:34,989 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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) [2021-06-05 13:12:34,989 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 1592 transitions. [2021-06-05 13:12:34,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-06-05 13:12:34,990 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:34,990 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:34,990 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-05 13:12:34,990 INFO L430 AbstractCegarLoop]: === Iteration 2 === [fooErr0ASSERT_VIOLATIONASSERT, fooErr0ASSERT_VIOLATIONASSERT, fooErr0ASSERT_VIOLATIONASSERT, fooErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:34,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:34,991 INFO L82 PathProgramCache]: Analyzing trace with hash -1353166755, now seen corresponding path program 1 times [2021-06-05 13:12:34,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:34,991 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011610419] [2021-06-05 13:12:34,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:35,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:35,038 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:35,038 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:12:35,039 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011610419] [2021-06-05 13:12:35,039 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011610419] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 13:12:35,039 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [554133640] [2021-06-05 13:12:35,039 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 [2021-06-05 13:12:35,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:12:35,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 4 conjunts are in the unsatisfiable core [2021-06-05 13:12:35,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-05 13:12:35,103 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-05 13:12:35,104 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [554133640] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-05 13:12:35,104 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-05 13:12:35,104 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-06-05 13:12:35,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924648989] [2021-06-05 13:12:35,108 INFO L462 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-06-05 13:12:35,109 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:12:35,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-06-05 13:12:35,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-06-05 13:12:35,109 INFO L87 Difference]: Start difference. First operand 532 states and 1592 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 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) [2021-06-05 13:12:35,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:12:35,161 INFO L93 Difference]: Finished difference Result 619 states and 1628 transitions. [2021-06-05 13:12:35,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 13:12:35,162 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 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) Word has length 8 [2021-06-05 13:12:35,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:12:35,168 INFO L225 Difference]: With dead ends: 619 [2021-06-05 13:12:35,168 INFO L226 Difference]: Without dead ends: 535 [2021-06-05 13:12:35,169 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.2ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-06-05 13:12:35,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2021-06-05 13:12:35,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 463. [2021-06-05 13:12:35,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 449 states have (on average 2.8151447661469935) internal successors, (1264), 462 states have internal predecessors, (1264), 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) [2021-06-05 13:12:35,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 1264 transitions. [2021-06-05 13:12:35,198 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 1264 transitions. Word has length 8 [2021-06-05 13:12:35,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:12:35,198 INFO L482 AbstractCegarLoop]: Abstraction has 463 states and 1264 transitions. [2021-06-05 13:12:35,198 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 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) [2021-06-05 13:12:35,198 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 1264 transitions. [2021-06-05 13:12:35,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-06-05 13:12:35,201 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:12:35,201 INFO L521 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:12:35,416 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-05 13:12:35,417 INFO L430 AbstractCegarLoop]: === Iteration 3 === [fooErr0ASSERT_VIOLATIONASSERT, fooErr0ASSERT_VIOLATIONASSERT, fooErr0ASSERT_VIOLATIONASSERT, fooErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:12:35,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:12:35,417 INFO L82 PathProgramCache]: Analyzing trace with hash 364165842, now seen corresponding path program 1 times [2021-06-05 13:12:35,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:12:35,418 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630901248] [2021-06-05 13:12:35,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:12:35,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-05 13:12:35,423 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-05 13:12:35,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-05 13:12:35,428 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-05 13:12:35,430 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-05 13:12:35,430 INFO L622 BasicCegarLoop]: Counterexample might be feasible [2021-06-05 13:12:35,430 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-06-05 13:12:35,430 INFO L315 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was UNSAFE (1/2) [2021-06-05 13:12:35,432 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 3 thread instances [2021-06-05 13:12:35,442 INFO L202 PluginConnector]: Adding new model ForkInLoop02-Incrementer.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 01:12:35 BasicIcfg [2021-06-05 13:12:35,443 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 13:12:35,443 INFO L168 Benchmark]: Toolchain (without parser) took 2001.21 ms. Allocated memory is still 362.8 MB. Free memory was 342.6 MB in the beginning and 314.1 MB in the end (delta: 28.5 MB). Peak memory consumption was 28.3 MB. Max. memory is 16.0 GB. [2021-06-05 13:12:35,444 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.24 ms. Allocated memory is still 362.8 MB. Free memory is still 343.6 MB. There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 13:12:35,444 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.90 ms. Allocated memory is still 362.8 MB. Free memory was 342.5 MB in the beginning and 341.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 13:12:35,444 INFO L168 Benchmark]: Boogie Preprocessor took 15.24 ms. Allocated memory is still 362.8 MB. Free memory was 341.0 MB in the beginning and 340.1 MB in the end (delta: 919.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 13:12:35,444 INFO L168 Benchmark]: RCFGBuilder took 217.80 ms. Allocated memory is still 362.8 MB. Free memory was 340.0 MB in the beginning and 331.5 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. [2021-06-05 13:12:35,445 INFO L168 Benchmark]: TraceAbstraction took 1734.50 ms. Allocated memory is still 362.8 MB. Free memory was 331.0 MB in the beginning and 314.1 MB in the end (delta: 16.9 MB). Peak memory consumption was 15.7 MB. Max. memory is 16.0 GB. [2021-06-05 13:12:35,446 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 0.24 ms. Allocated memory is still 362.8 MB. Free memory is still 343.6 MB. There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 27.90 ms. Allocated memory is still 362.8 MB. Free memory was 342.5 MB in the beginning and 341.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 15.24 ms. Allocated memory is still 362.8 MB. Free memory was 341.0 MB in the beginning and 340.1 MB in the end (delta: 919.7 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * RCFGBuilder took 217.80 ms. Allocated memory is still 362.8 MB. Free memory was 340.0 MB in the beginning and 331.5 MB in the end (delta: 8.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.0 GB. * TraceAbstraction took 1734.50 ms. Allocated memory is still 362.8 MB. Free memory was 331.0 MB in the beginning and 314.1 MB in the end (delta: 16.9 MB). Peak memory consumption was 15.7 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 31]: assertion can be violated assertion can be violated We found a FailurePath: [L17] 0 newid := 0; VAL [newid=0] [L18] 0 n := 0; VAL [n=0, newid=0] [L21] FORK 0 fork newid foo(); VAL [n=0, newid=0] [L22] 0 newid := newid + 1; VAL [n=0, newid=1] [L30] 1 n := n + 1; VAL [n=1, newid=1] [L21] FORK 0 fork newid foo(); VAL [n=1, newid=1] [L22] 0 newid := newid + 1; VAL [n=1, newid=2] [L21] FORK 0 fork newid foo(); VAL [n=1, newid=2] [L30] 2 n := n + 1; VAL [n=2, newid=2] [L30] 3 n := n + 1; VAL [n=3, newid=2] [L31] 1 assert n <= 2; VAL [n=3, newid=2] - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 16 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 283.1ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 7.2ms, AutomataDifference: 45.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 22.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 7 SDtfs, 9 SDslu, 6 SDs, 0 SdLazy, 4 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 32.7ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 7.4ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 4.1ms SsaConstructionTime, 18.8ms SatisfiabilityAnalysisTime, 74.4ms InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 10 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 4 procedures, 21 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 515.7ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 1.6ms, AutomataDifference: 84.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 20 SDtfs, 33 SDslu, 27 SDs, 0 SdLazy, 28 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 47.5ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=119occurred in iteration=0, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 36.1ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 3.2ms SsaConstructionTime, 10.0ms SatisfiabilityAnalysisTime, 111.0ms InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 48 SizeOfPredicates, 0 NumberOfNonLiveVariables, 17 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/2 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 - StatisticsResult: Ultimate Automizer benchmark data with 3 thread instances CFG has 5 procedures, 26 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 694.5ms, OverallIterations: 3, TraceHistogramMax: 2, EmptinessCheckTime: 4.9ms, AutomataDifference: 149.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 34.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 28 SDtfs, 60 SDslu, 39 SDs, 0 SdLazy, 48 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 60.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 22.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=594occurred in iteration=0, InterpolantAutomatonStates: 9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 120.7ms AutomataMinimizationTime, 2 MinimizatonAttempts, 72 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 21.4ms SsaConstructionTime, 17.8ms SatisfiabilityAnalysisTime, 75.0ms InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 48 SizeOfPredicates, 0 NumberOfNonLiveVariables, 17 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 0/2 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 - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 3 procedures, 16 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 40.9ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 1.3ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 5.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 0, 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: 0.6ms SsaConstructionTime, 6.2ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 2 thread instances CFG has 4 procedures, 21 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 24.5ms, OverallIterations: 1, TraceHistogramMax: 2, EmptinessCheckTime: 1.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 6.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=119occurred in iteration=0, InterpolantAutomatonStates: 0, 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: 1.8ms SsaConstructionTime, 3.5ms SatisfiabilityAnalysisTime, 0.0ms InterpolantComputationTime, 7 NumberOfCodeBlocks, 7 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 3 thread instances CFG has 5 procedures, 26 locations, 5 error locations. Started 0 CEGAR loops. No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...