/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/single_assertion_test.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-29289db [2021-06-05 13:11:41,424 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-05 13:11:41,426 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-05 13:11:41,449 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-05 13:11:41,486 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 13:11:41,515 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-05 13:11:41,515 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-05 13:11:41,516 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-05 13:11:41,516 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-05 13:11:41,518 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-05 13:11:41,518 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-05 13:11:41,518 INFO L138 SettingsManager]: * Use SBE=true [2021-06-05 13:11:41,519 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-05 13:11:41,519 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-05 13:11:41,519 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-05 13:11:41,520 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-05 13:11:41,520 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-05 13:11:41,520 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-05 13:11:41,520 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-05 13:11:41,520 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-05 13:11:41,520 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-05 13:11:41,520 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-05 13:11:41,520 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-05 13:11:41,521 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-05 13:11:41,521 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-05 13:11:41,521 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-05 13:11:41,521 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-05 13:11:41,521 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-05 13:11:41,521 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-05 13:11:41,521 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-05 13:11:41,522 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-05 13:11:41,522 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-05 13:11:41,522 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-05 13:11:41,522 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-05 13:11:41,522 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-05 13:11:41,522 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-05 13:11:41,523 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2021-06-05 13:11:41,523 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-05 13:11:41,804 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-05 13:11:41,823 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-05 13:11:41,825 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-05 13:11:41,826 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-05 13:11:41,827 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-05 13:11:41,828 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/single_assertion_test.bpl [2021-06-05 13:11:41,829 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/single_assertion_test.bpl' [2021-06-05 13:11:41,859 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-05 13:11:41,861 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-05 13:11:41,862 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-05 13:11:41,862 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-05 13:11:41,862 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-05 13:11:41,871 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "single_assertion_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 01:11:41" (1/1) ... [2021-06-05 13:11:41,877 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "single_assertion_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 01:11:41" (1/1) ... [2021-06-05 13:11:41,884 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-05 13:11:41,885 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-05 13:11:41,885 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-05 13:11:41,885 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-05 13:11:41,892 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "single_assertion_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 01:11:41" (1/1) ... [2021-06-05 13:11:41,892 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "single_assertion_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 01:11:41" (1/1) ... [2021-06-05 13:11:41,893 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "single_assertion_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 01:11:41" (1/1) ... [2021-06-05 13:11:41,893 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "single_assertion_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 01:11:41" (1/1) ... [2021-06-05 13:11:41,894 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "single_assertion_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 01:11:41" (1/1) ... [2021-06-05 13:11:41,896 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "single_assertion_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 01:11:41" (1/1) ... [2021-06-05 13:11:41,897 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "single_assertion_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 01:11:41" (1/1) ... [2021-06-05 13:11:41,897 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-05 13:11:41,898 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-05 13:11:41,898 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-05 13:11:41,898 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-05 13:11:41,900 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "single_assertion_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 01:11:41" (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 13:11:41,965 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-05 13:11:41,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-05 13:11:41,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-05 13:11:41,966 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread given in one single declaration [2021-06-05 13:11:41,966 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2021-06-05 13:11:41,966 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2021-06-05 13:11:41,966 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 13:11:42,072 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-05 13:11:42,073 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-05 13:11:42,074 INFO L202 PluginConnector]: Adding new model single_assertion_test.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 01:11:42 BoogieIcfgContainer [2021-06-05 13:11:42,074 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-05 13:11:42,075 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-05 13:11:42,076 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-05 13:11:42,078 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-05 13:11:42,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "single_assertion_test.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.06 01:11:41" (1/2) ... [2021-06-05 13:11:42,079 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b174cf4 and model type single_assertion_test.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.06 01:11:42, skipping insertion in model container [2021-06-05 13:11:42,079 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "single_assertion_test.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.06 01:11:42" (2/2) ... [2021-06-05 13:11:42,080 INFO L111 eAbstractionObserver]: Analyzing ICFG single_assertion_test.bpl [2021-06-05 13:11:42,085 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-05 13:11:42,085 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-05 13:11:42,086 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-06-05 13:11:42,086 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-05 13:11:42,102 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 13:11:42,102 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 13:11:42,102 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 13:11:42,103 WARN L313 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 13:11:42,110 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-06-05 13:11:42,126 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-06-05 13:11:42,140 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 13:11:42,140 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 13:11:42,141 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 13:11:42,141 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 13:11:42,141 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 13:11:42,141 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 13:11:42,141 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 13:11:42,141 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 13:11:42,148 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 19 places, 16 transitions, 43 flow [2021-06-05 13:11:42,158 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 31 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 30 states have internal predecessors, (46), 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 13:11:42,160 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 30 states have internal predecessors, (46), 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 13:11:42,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-06-05 13:11:42,164 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:11:42,165 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-06-05 13:11:42,165 INFO L430 AbstractCegarLoop]: === Iteration 1 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:11:42,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:11:42,170 INFO L82 PathProgramCache]: Analyzing trace with hash 1683438605, now seen corresponding path program 1 times [2021-06-05 13:11:42,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:11:42,177 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827235145] [2021-06-05 13:11:42,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:11:42,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:11:42,318 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 13:11:42,318 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:11:42,319 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827235145] [2021-06-05 13:11:42,319 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827235145] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:11:42,319 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:11:42,319 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 13:11:42,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503204847] [2021-06-05 13:11:42,323 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-05 13:11:42,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:11:42,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-05 13:11:42,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-05 13:11:42,335 INFO L87 Difference]: Start difference. First operand has 31 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 30 states have internal predecessors, (46), 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 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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 13:11:42,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:11:42,419 INFO L93 Difference]: Finished difference Result 25 states and 36 transitions. [2021-06-05 13:11:42,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 13:11:42,421 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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 6 [2021-06-05 13:11:42,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:11:42,425 INFO L225 Difference]: With dead ends: 25 [2021-06-05 13:11:42,426 INFO L226 Difference]: Without dead ends: 0 [2021-06-05 13:11:42,427 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.2ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-05 13:11:42,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-06-05 13:11:42,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-06-05 13:11:42,452 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 13:11:42,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-06-05 13:11:42,453 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2021-06-05 13:11:42,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:11:42,453 INFO L482 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-06-05 13:11:42,454 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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 13:11:42,454 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-06-05 13:11:42,454 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-06-05 13:11:42,454 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-05 13:11:42,455 INFO L315 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE (1/2) [2021-06-05 13:11:42,457 INFO L255 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-06-05 13:11:42,465 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 13:11:42,465 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 13:11:42,465 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 13:11:42,465 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 13:11:42,466 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 13:11:42,466 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 13:11:42,467 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 13:11:42,467 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == InUseError======== [2021-06-05 13:11:42,471 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 19 places, 16 transitions, 43 flow [2021-06-05 13:11:42,476 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 31 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 30 states have internal predecessors, (46), 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 13:11:42,477 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 26 states have (on average 1.7692307692307692) internal successors, (46), 30 states have internal predecessors, (46), 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 13:11:42,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-06-05 13:11:42,478 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:11:42,478 INFO L521 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2021-06-05 13:11:42,478 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0INUSE_VIOLATION]=== [2021-06-05 13:11:42,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:11:42,481 INFO L82 PathProgramCache]: Analyzing trace with hash 646984126, now seen corresponding path program 1 times [2021-06-05 13:11:42,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:11:42,483 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016824177] [2021-06-05 13:11:42,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:11:42,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-05 13:11:42,492 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-05 13:11:42,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-05 13:11:42,496 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-05 13:11:42,511 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-05 13:11:42,512 INFO L622 BasicCegarLoop]: Counterexample might be feasible [2021-06-05 13:11:42,514 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-06-05 13:11:42,514 INFO L315 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2021-06-05 13:11:42,514 WARN L242 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2021-06-05 13:11:42,514 INFO L510 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2021-06-05 13:11:42,522 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 13:11:42,522 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 13:11:42,522 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 13:11:42,522 WARN L313 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 13:11:42,523 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 13:11:42,524 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 13:11:42,524 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 13:11:42,524 WARN L313 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_i not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-06-05 13:11:42,552 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-06-05 13:11:42,552 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-06-05 13:11:42,553 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-05 13:11:42,553 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-05 13:11:42,553 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-05 13:11:42,554 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-05 13:11:42,554 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-05 13:11:42,554 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-05 13:11:42,554 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-05 13:11:42,554 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-06-05 13:11:42,555 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 26 places, 23 transitions, 70 flow [2021-06-05 13:11:42,568 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 165 states, 153 states have (on average 2.3856209150326797) internal successors, (365), 164 states have internal predecessors, (365), 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 13:11:42,570 INFO L276 IsEmpty]: Start isEmpty. Operand has 165 states, 153 states have (on average 2.3856209150326797) internal successors, (365), 164 states have internal predecessors, (365), 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 13:11:42,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-06-05 13:11:42,571 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:11:42,571 INFO L521 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-06-05 13:11:42,571 INFO L430 AbstractCegarLoop]: === Iteration 1 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:11:42,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:11:42,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1931105359, now seen corresponding path program 1 times [2021-06-05 13:11:42,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:11:42,573 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321719753] [2021-06-05 13:11:42,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:11:42,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-05 13:11:42,640 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 13:11:42,640 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-05 13:11:42,640 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321719753] [2021-06-05 13:11:42,640 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321719753] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-05 13:11:42,641 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-05 13:11:42,641 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-05 13:11:42,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263758355] [2021-06-05 13:11:42,641 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-06-05 13:11:42,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-05 13:11:42,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-06-05 13:11:42,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-06-05 13:11:42,642 INFO L87 Difference]: Start difference. First operand has 165 states, 153 states have (on average 2.3856209150326797) internal successors, (365), 164 states have internal predecessors, (365), 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 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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 13:11:42,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-06-05 13:11:42,688 INFO L93 Difference]: Finished difference Result 134 states and 289 transitions. [2021-06-05 13:11:42,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-06-05 13:11:42,691 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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 6 [2021-06-05 13:11:42,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-06-05 13:11:42,698 INFO L225 Difference]: With dead ends: 134 [2021-06-05 13:11:42,698 INFO L226 Difference]: Without dead ends: 111 [2021-06-05 13:11:42,699 INFO L777 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.5ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-06-05 13:11:42,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-06-05 13:11:42,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2021-06-05 13:11:42,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 108 states have (on average 2.175925925925926) internal successors, (235), 110 states have internal predecessors, (235), 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 13:11:42,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 235 transitions. [2021-06-05 13:11:42,739 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 235 transitions. Word has length 6 [2021-06-05 13:11:42,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-06-05 13:11:42,740 INFO L482 AbstractCegarLoop]: Abstraction has 111 states and 235 transitions. [2021-06-05 13:11:42,740 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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 13:11:42,740 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 235 transitions. [2021-06-05 13:11:42,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-06-05 13:11:42,741 INFO L513 BasicCegarLoop]: Found error trace [2021-06-05 13:11:42,741 INFO L521 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-06-05 13:11:42,742 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-06-05 13:11:42,742 INFO L430 AbstractCegarLoop]: === Iteration 2 === [threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-05 13:11:42,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-05 13:11:42,743 INFO L82 PathProgramCache]: Analyzing trace with hash 1522330776, now seen corresponding path program 1 times [2021-06-05 13:11:42,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-05 13:11:42,743 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829673781] [2021-06-05 13:11:42,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-05 13:11:42,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-05 13:11:42,756 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-05 13:11:42,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-06-05 13:11:42,767 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-06-05 13:11:42,771 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-06-05 13:11:42,771 INFO L622 BasicCegarLoop]: Counterexample might be feasible [2021-06-05 13:11:42,773 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-06-05 13:11:42,773 INFO L315 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was UNSAFE (1/2) [2021-06-05 13:11:42,776 INFO L246 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2021-06-05 13:11:42,785 INFO L202 PluginConnector]: Adding new model single_assertion_test.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 05.06 01:11:42 BasicIcfg [2021-06-05 13:11:42,785 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-05 13:11:42,787 INFO L168 Benchmark]: Toolchain (without parser) took 925.54 ms. Allocated memory is still 346.0 MB. Free memory was 325.9 MB in the beginning and 296.1 MB in the end (delta: 29.8 MB). Peak memory consumption was 31.5 MB. Max. memory is 16.0 GB. [2021-06-05 13:11:42,788 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.13 ms. Allocated memory is still 346.0 MB. Free memory was 327.0 MB in the beginning and 326.9 MB in the end (delta: 70.3 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 13:11:42,788 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.21 ms. Allocated memory is still 346.0 MB. Free memory was 325.9 MB in the beginning and 324.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. [2021-06-05 13:11:42,789 INFO L168 Benchmark]: Boogie Preprocessor took 12.31 ms. Allocated memory is still 346.0 MB. Free memory was 324.4 MB in the beginning and 323.5 MB in the end (delta: 911.6 kB). There was no memory consumed. Max. memory is 16.0 GB. [2021-06-05 13:11:42,790 INFO L168 Benchmark]: RCFGBuilder took 176.01 ms. Allocated memory is still 346.0 MB. Free memory was 323.4 MB in the beginning and 314.2 MB in the end (delta: 9.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. [2021-06-05 13:11:42,793 INFO L168 Benchmark]: TraceAbstraction took 710.09 ms. Allocated memory is still 346.0 MB. Free memory was 313.8 MB in the beginning and 296.1 MB in the end (delta: 17.7 MB). Peak memory consumption was 19.0 MB. Max. memory is 16.0 GB. [2021-06-05 13:11:42,796 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.13 ms. Allocated memory is still 346.0 MB. Free memory was 327.0 MB in the beginning and 326.9 MB in the end (delta: 70.3 kB). There was no memory consumed. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 22.21 ms. Allocated memory is still 346.0 MB. Free memory was 325.9 MB in the beginning and 324.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 12.31 ms. Allocated memory is still 346.0 MB. Free memory was 324.4 MB in the beginning and 323.5 MB in the end (delta: 911.6 kB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 176.01 ms. Allocated memory is still 346.0 MB. Free memory was 323.4 MB in the beginning and 314.2 MB in the end (delta: 9.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.0 GB. * TraceAbstraction took 710.09 ms. Allocated memory is still 346.0 MB. Free memory was 313.8 MB in the beginning and 296.1 MB in the end (delta: 17.7 MB). Peak memory consumption was 19.0 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 41]: assertion can be violated assertion can be violated We found a FailurePath: [L19] 0 x := 0; VAL [x=0] [L21] 0 i := 0; VAL [i=0, x=0] [L22] COND TRUE 0 i < 2 VAL [i=0, x=0] [L24] FORK 0 fork i thread(i); VAL [i=0, i=0, x=0] [L25] 0 i := i + 1; VAL [i=1, i=0, x=0] [L22] COND TRUE 0 i < 2 VAL [i=1, i=0, x=0] [L24] FORK 0 fork i thread(i); VAL [i=1, i=1, x=0] [L38] 2 x := x + 1; VAL [i=1, i=1, x=1] [L41] 2 assert i == 0; VAL [i=1, i=1, x=1] - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 22 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 316.4ms, OverallIterations: 1, TraceHistogramMax: 1, EmptinessCheckTime: 6.2ms, AutomataDifference: 102.9ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 16.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 8 SDtfs, 12 SDslu, 7 SDs, 0 SdLazy, 9 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 50.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 7.2ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 3.1ms SsaConstructionTime, 17.3ms SatisfiabilityAnalysisTime, 65.7ms InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 33 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, 27 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 219.6ms, OverallIterations: 2, TraceHistogramMax: 2, EmptinessCheckTime: 2.1ms, AutomataDifference: 57.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 14.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 19 SDtfs, 24 SDslu, 17 SDs, 0 SdLazy, 10 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 18.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=165occurred in iteration=0, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 40.1ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 4.8ms SsaConstructionTime, 16.5ms SatisfiabilityAnalysisTime, 51.7ms InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 33 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 for thread instance sufficiency with 1 thread instances CFG has 3 procedures, 22 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 49.2ms, OverallIterations: 1, TraceHistogramMax: 2, EmptinessCheckTime: 1.5ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred 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, 2.8ms 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 2 thread instances CFG has 4 procedures, 27 locations, 5 error locations. Started 0 CEGAR loops. No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...