/usr/bin/java -Xmx8000000000 -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-PN-NoLbe-OGIterative-Hitting.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/regression/ThreadIdTest-Unsafe.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-2cf4d3f9dd5fed411db405f577e28237a543b59a-2cf4d3f [2021-08-13 12:46:29,212 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-13 12:46:29,214 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-13 12:46:29,254 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-13 12:46:29,282 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-13 12:46:29,285 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-13 12:46:29,286 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-13 12:46:29,287 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-13 12:46:29,288 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-13 12:46:29,289 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-13 12:46:29,298 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-13 12:46:29,300 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-13 12:46:29,301 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-13 12:46:29,302 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-13 12:46:29,303 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-13 12:46:29,304 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-13 12:46:29,306 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-08-13 12:46:29,314 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-PN-NoLbe-OGIterative-Hitting.epf [2021-08-13 12:46:29,333 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-13 12:46:29,333 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-13 12:46:29,334 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-13 12:46:29,335 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-13 12:46:29,335 INFO L138 SettingsManager]: * Use SBE=true [2021-08-13 12:46:29,335 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-13 12:46:29,335 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-13 12:46:29,335 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-13 12:46:29,335 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-13 12:46:29,336 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-13 12:46:29,336 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-13 12:46:29,336 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-13 12:46:29,336 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-13 12:46:29,336 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-13 12:46:29,336 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-13 12:46:29,337 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-13 12:46:29,337 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-13 12:46:29,337 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-13 12:46:29,337 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-13 12:46:29,337 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-13 12:46:29,338 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-13 12:46:29,338 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-13 12:46:29,338 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-13 12:46:29,338 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-13 12:46:29,338 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-13 12:46:29,339 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-13 12:46:29,339 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-13 12:46:29,339 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-13 12:46:29,339 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-08-13 12:46:29,339 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-13 12:46:29,340 INFO L138 SettingsManager]: * Compute cosets for OwickiGries annotation iteratively=true [2021-08-13 12:46:29,340 INFO L138 SettingsManager]: * Use hitting sets in computation of OwickiGries annotation=true [2021-08-13 12:46:29,340 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-13 12:46:29,661 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-13 12:46:29,678 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-13 12:46:29,681 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-13 12:46:29,682 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-08-13 12:46:29,683 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-08-13 12:46:29,684 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/ThreadIdTest-Unsafe.bpl [2021-08-13 12:46:29,684 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/regression/ThreadIdTest-Unsafe.bpl' [2021-08-13 12:46:29,706 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-13 12:46:29,708 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-08-13 12:46:29,709 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-13 12:46:29,709 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-13 12:46:29,709 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-13 12:46:29,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 12:46:29" (1/1) ... [2021-08-13 12:46:29,730 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 12:46:29" (1/1) ... [2021-08-13 12:46:29,737 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-13 12:46:29,739 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-13 12:46:29,739 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-13 12:46:29,739 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-13 12:46:29,747 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 12:46:29" (1/1) ... [2021-08-13 12:46:29,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 12:46:29" (1/1) ... [2021-08-13 12:46:29,749 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 12:46:29" (1/1) ... [2021-08-13 12:46:29,749 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 12:46:29" (1/1) ... [2021-08-13 12:46:29,753 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 12:46:29" (1/1) ... [2021-08-13 12:46:29,754 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 12:46:29" (1/1) ... [2021-08-13 12:46:29,754 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 12:46:29" (1/1) ... [2021-08-13 12:46:29,755 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-13 12:46:29,757 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-13 12:46:29,757 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-13 12:46:29,758 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-13 12:46:29,760 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 12:46:29" (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 [2021-08-13 12:46:29,837 INFO L130 BoogieDeclarations]: Found specification of procedure decrement [2021-08-13 12:46:29,837 INFO L138 BoogieDeclarations]: Found implementation of procedure decrement [2021-08-13 12:46:29,837 INFO L130 BoogieDeclarations]: Found specification of procedure increment [2021-08-13 12:46:29,838 INFO L138 BoogieDeclarations]: Found implementation of procedure increment [2021-08-13 12:46:29,838 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-13 12:46:29,838 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-13 12:46:29,839 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-13 12:46:29,972 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-13 12:46:29,973 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-13 12:46:29,975 INFO L202 PluginConnector]: Adding new model ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 12:46:29 BoogieIcfgContainer [2021-08-13 12:46:29,975 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-13 12:46:29,977 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-13 12:46:29,978 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-13 12:46:29,981 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-13 12:46:29,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 13.08 12:46:29" (1/2) ... [2021-08-13 12:46:29,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6169ed44 and model type ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.08 12:46:29, skipping insertion in model container [2021-08-13 12:46:29,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.08 12:46:29" (2/2) ... [2021-08-13 12:46:29,984 INFO L111 eAbstractionObserver]: Analyzing ICFG ThreadIdTest-Unsafe.bpl [2021-08-13 12:46:29,993 INFO L206 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-13 12:46:29,994 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-13 12:46:29,995 INFO L445 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-13 12:46:30,022 WARN L313 ript$VariableManager]: TermVariabe decrementThread1of1ForFork1_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 12:46:30,023 WARN L313 ript$VariableManager]: TermVariabe decrementThread1of1ForFork1_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 12:46:30,024 WARN L313 ript$VariableManager]: TermVariabe decrementThread1of1ForFork1_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 12:46:30,024 WARN L313 ript$VariableManager]: TermVariabe decrementThread1of1ForFork1_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 12:46:30,025 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 12:46:30,025 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 12:46:30,025 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_n not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 12:46:30,025 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 12:46:30,028 WARN L313 ript$VariableManager]: TermVariabe incrementThread1of1ForFork0_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 12:46:30,032 WARN L313 ript$VariableManager]: TermVariabe decrementThread1of1ForFork1_res not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-08-13 12:46:30,038 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-08-13 12:46:30,058 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-08-13 12:46:30,077 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-08-13 12:46:30,077 INFO L379 AbstractCegarLoop]: Hoare is false [2021-08-13 12:46:30,077 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-08-13 12:46:30,077 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-13 12:46:30,078 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-13 12:46:30,078 INFO L383 AbstractCegarLoop]: Difference is false [2021-08-13 12:46:30,078 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-13 12:46:30,078 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-08-13 12:46:30,087 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 20 places, 14 transitions, 44 flow [2021-08-13 12:46:30,103 INFO L129 PetriNetUnfolder]: 0/15 cut-off events. [2021-08-13 12:46:30,103 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-08-13 12:46:30,105 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24 conditions, 15 events. 0/15 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 17 event pairs, 0 based on Foata normal form. 0/13 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-08-13 12:46:30,105 INFO L82 GeneralOperation]: Start removeDead. Operand has 20 places, 14 transitions, 44 flow [2021-08-13 12:46:30,109 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 16 places, 10 transitions, 32 flow [2021-08-13 12:46:30,113 INFO L129 PetriNetUnfolder]: 0/9 cut-off events. [2021-08-13 12:46:30,114 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-08-13 12:46:30,114 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:46:30,115 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:46:30,115 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:46:30,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:46:30,120 INFO L82 PathProgramCache]: Analyzing trace with hash 1338516581, now seen corresponding path program 1 times [2021-08-13 12:46:30,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:46:30,127 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258190389] [2021-08-13 12:46:30,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:46:30,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-13 12:46:30,225 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:30,226 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:46:30,231 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:30,232 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-08-13 12:46:30,242 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-08-13 12:46:30,243 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-08-13 12:46:30,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-13 12:46:30,244 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-13 12:46:30,244 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258190389] [2021-08-13 12:46:30,245 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258190389] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-13 12:46:30,245 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-13 12:46:30,246 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-13 12:46:30,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215556307] [2021-08-13 12:46:30,253 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-08-13 12:46:30,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-13 12:46:30,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-13 12:46:30,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-13 12:46:30,266 INFO L513 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 14 [2021-08-13 12:46:30,269 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 16 places, 10 transitions, 32 flow. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2021-08-13 12:46:30,269 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-08-13 12:46:30,270 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 14 [2021-08-13 12:46:30,271 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-08-13 12:46:30,278 INFO L129 PetriNetUnfolder]: 0/9 cut-off events. [2021-08-13 12:46:30,278 INFO L130 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2021-08-13 12:46:30,279 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19 conditions, 9 events. 0/9 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 4 event pairs, 0 based on Foata normal form. 1/10 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2021-08-13 12:46:30,280 INFO L132 encePairwiseOnDemand]: 12/14 looper letters, 0 selfloop transitions, 1 changer transitions 0/9 dead transitions. [2021-08-13 12:46:30,280 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 9 transitions, 29 flow [2021-08-13 12:46:30,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-13 12:46:30,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-08-13 12:46:30,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 38 transitions. [2021-08-13 12:46:30,289 INFO L558 CegarLoopForPetriNet]: DFA transition density 0.9047619047619048 [2021-08-13 12:46:30,289 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 38 transitions. [2021-08-13 12:46:30,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 38 transitions. [2021-08-13 12:46:30,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-13 12:46:30,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 38 transitions. [2021-08-13 12:46:30,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2021-08-13 12:46:30,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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) [2021-08-13 12:46:30,297 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 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) [2021-08-13 12:46:30,298 INFO L348 CegarLoopForPetriNet]: 16 programPoint places, 2 predicate places. [2021-08-13 12:46:30,298 INFO L482 AbstractCegarLoop]: Abstraction has has 18 places, 9 transitions, 29 flow [2021-08-13 12:46:30,298 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 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) [2021-08-13 12:46:30,298 INFO L258 CegarLoopForPetriNet]: Found error trace [2021-08-13 12:46:30,298 INFO L266 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-08-13 12:46:30,298 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-13 12:46:30,299 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-08-13 12:46:30,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-13 12:46:30,299 INFO L82 PathProgramCache]: Analyzing trace with hash 1338455046, now seen corresponding path program 1 times [2021-08-13 12:46:30,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-13 12:46:30,300 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998334125] [2021-08-13 12:46:30,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-13 12:46:30,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-13 12:46:30,309 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-13 12:46:30,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-13 12:46:30,314 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-13 12:46:30,327 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-13 12:46:30,327 INFO L651 BasicCegarLoop]: Counterexample might be feasible [2021-08-13 12:46:30,328 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-13 12:46:30,331 INFO L239 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-13 12:46:30,342 INFO L202 PluginConnector]: Adding new model ThreadIdTest-Unsafe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.08 12:46:30 BasicIcfg [2021-08-13 12:46:30,342 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-13 12:46:30,344 INFO L168 Benchmark]: Toolchain (without parser) took 635.19 ms. Allocated memory is still 185.6 MB. Free memory was 166.5 MB in the beginning and 131.9 MB in the end (delta: 34.6 MB). Peak memory consumption was 33.6 MB. Max. memory is 8.0 GB. [2021-08-13 12:46:30,344 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.14 ms. Allocated memory is still 185.6 MB. Free memory is still 167.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-08-13 12:46:30,345 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.65 ms. Allocated memory is still 185.6 MB. Free memory was 166.3 MB in the beginning and 164.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-13 12:46:30,345 INFO L168 Benchmark]: Boogie Preprocessor took 16.76 ms. Allocated memory is still 185.6 MB. Free memory was 164.9 MB in the beginning and 164.1 MB in the end (delta: 719.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-13 12:46:30,346 INFO L168 Benchmark]: RCFGBuilder took 218.21 ms. Allocated memory is still 185.6 MB. Free memory was 163.9 MB in the beginning and 155.8 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2021-08-13 12:46:30,347 INFO L168 Benchmark]: TraceAbstraction took 364.84 ms. Allocated memory is still 185.6 MB. Free memory was 155.2 MB in the beginning and 131.9 MB in the end (delta: 23.3 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-08-13 12:46:30,349 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 0.14 ms. Allocated memory is still 185.6 MB. Free memory is still 167.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 28.65 ms. Allocated memory is still 185.6 MB. Free memory was 166.3 MB in the beginning and 164.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 16.76 ms. Allocated memory is still 185.6 MB. Free memory was 164.9 MB in the beginning and 164.1 MB in the end (delta: 719.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 218.21 ms. Allocated memory is still 185.6 MB. Free memory was 163.9 MB in the beginning and 155.8 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 364.84 ms. Allocated memory is still 185.6 MB. Free memory was 155.2 MB in the beginning and 131.9 MB in the end (delta: 23.3 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 22]: assertion can be violated assertion can be violated We found a FailurePath: [L17] 0 x := 0; VAL [x=0] [L19] FORK 0 fork 1 increment(x); VAL [n=0, x=0] [L20] FORK 0 fork 2 decrement(x); VAL [n=0, n=0, x=0] [L37] 2 res := n - 1; VAL [n=0, n=0, res=-1, x=0] [L21] JOIN 2 join 2 assign y; VAL [n=0, n=0, res=-1, x=0, y=-1] [L22] 0 assert y == 1; VAL [n=0, n=0, res=-1, x=0, y=-1] - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 22 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 4.5ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: VerificationResult: UNSAFE, OverallTime: 255.5ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 36.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 30.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 1 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, InterpolantAutomatonStates: 3, 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: 4.6ms SsaConstructionTime, 21.2ms SatisfiabilityAnalysisTime, 47.6ms InterpolantComputationTime, 14 NumberOfCodeBlocks, 14 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 14 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 RESULT: Ultimate proved your program to be incorrect! Received shutdown request...