/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-POR-None-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/collitem-symm.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9e34d99ae2c6837f487980c721c4b6acf9d9b15c-9e34d99 [2021-07-09 20:07:43,183 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-09 20:07:43,184 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-09 20:07:43,218 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-09 20:07:43,234 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-07-09 20:07:43,235 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-07-09 20:07:43,237 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-07-09 20:07:43,238 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-07-09 20:07:43,240 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-07-09 20:07:43,241 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-07-09 20:07:43,243 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-07-09 20:07:43,246 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-07-09 20:07:43,247 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-07-09 20:07:43,248 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-07-09 20:07:43,251 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-07-09 20:07:43,251 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-07-09 20:07:43,253 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-07-09 20:07:43,264 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-None-NoLbe.epf [2021-07-09 20:07:43,291 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-09 20:07:43,292 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-09 20:07:43,292 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-09 20:07:43,292 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-09 20:07:43,294 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-09 20:07:43,295 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-09 20:07:43,295 INFO L138 SettingsManager]: * Use SBE=true [2021-07-09 20:07:43,295 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-09 20:07:43,295 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-09 20:07:43,295 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-09 20:07:43,296 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-09 20:07:43,296 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-09 20:07:43,296 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-09 20:07:43,296 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-09 20:07:43,296 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-09 20:07:43,296 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-09 20:07:43,296 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-09 20:07:43,296 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-09 20:07:43,296 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-09 20:07:43,296 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-09 20:07:43,297 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-09 20:07:43,297 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-09 20:07:43,297 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-09 20:07:43,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-09 20:07:43,297 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-09 20:07:43,297 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-09 20:07:43,297 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-09 20:07:43,297 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-09 20:07:43,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-09 20:07:43,298 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-09 20:07:43,298 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-07-09 20:07:43,298 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-09 20:07:43,298 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-09 20:07:43,537 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-09 20:07:43,560 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-09 20:07:43,562 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-09 20:07:43,562 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-09 20:07:43,564 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-09 20:07:43,565 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/collitem-symm.wvr.bpl [2021-07-09 20:07:43,565 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/collitem-symm.wvr.bpl' [2021-07-09 20:07:43,583 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-09 20:07:43,584 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-09 20:07:43,585 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-09 20:07:43,585 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-09 20:07:43,585 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-09 20:07:43,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "collitem-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 08:07:43" (1/1) ... [2021-07-09 20:07:43,599 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "collitem-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 08:07:43" (1/1) ... [2021-07-09 20:07:43,604 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-09 20:07:43,605 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-09 20:07:43,606 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-09 20:07:43,606 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-09 20:07:43,611 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "collitem-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 08:07:43" (1/1) ... [2021-07-09 20:07:43,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "collitem-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 08:07:43" (1/1) ... [2021-07-09 20:07:43,612 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "collitem-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 08:07:43" (1/1) ... [2021-07-09 20:07:43,612 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "collitem-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 08:07:43" (1/1) ... [2021-07-09 20:07:43,615 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "collitem-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 08:07:43" (1/1) ... [2021-07-09 20:07:43,615 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "collitem-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 08:07:43" (1/1) ... [2021-07-09 20:07:43,616 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "collitem-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 08:07:43" (1/1) ... [2021-07-09 20:07:43,619 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-09 20:07:43,620 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-09 20:07:43,621 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-09 20:07:43,622 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-09 20:07:43,622 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "collitem-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 08:07:43" (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 [2021-07-09 20:07:43,681 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-09 20:07:43,682 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-09 20:07:43,682 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-09 20:07:43,682 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-09 20:07:43,682 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-09 20:07:43,682 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-09 20:07:43,682 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-09 20:07:43,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-09 20:07:43,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-09 20:07:43,683 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-09 20:07:43,906 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-09 20:07:43,907 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-09 20:07:43,908 INFO L202 PluginConnector]: Adding new model collitem-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 08:07:43 BoogieIcfgContainer [2021-07-09 20:07:43,908 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-09 20:07:43,910 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-09 20:07:43,910 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-09 20:07:43,912 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-09 20:07:43,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "collitem-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 08:07:43" (1/2) ... [2021-07-09 20:07:43,912 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b04b9b2 and model type collitem-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.07 08:07:43, skipping insertion in model container [2021-07-09 20:07:43,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "collitem-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 08:07:43" (2/2) ... [2021-07-09 20:07:43,913 INFO L111 eAbstractionObserver]: Analyzing ICFG collitem-symm.wvr.bpl [2021-07-09 20:07:43,917 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-09 20:07:43,917 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-09 20:07:43,917 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-09 20:07:43,918 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-09 20:07:43,936 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-07-09 20:07:43,970 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-07-09 20:07:44,034 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-09 20:07:44,035 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-09 20:07:44,035 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-09 20:07:44,035 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-09 20:07:44,035 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-09 20:07:44,035 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-09 20:07:44,035 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-09 20:07:44,035 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-09 20:07:44,047 INFO L110 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 21 places, 14 transitions, 44 flow [2021-07-09 20:07:44,059 INFO L132 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 19 states, 18 states have (on average 1.4444444444444444) internal successors, (26), 18 states have internal predecessors, (26), 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) [2021-07-09 20:07:44,068 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 20:07:44,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 20:07:44,077 INFO L82 PathProgramCache]: Analyzing trace with hash 539606600, now seen corresponding path program 1 times [2021-07-09 20:07:44,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 20:07:44,084 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213841647] [2021-07-09 20:07:44,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 20:07:44,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 20:07:44,847 WARN L205 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 359 DAG size of output: 229 [2021-07-09 20:07:45,281 WARN L205 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 42 [2021-07-09 20:07:45,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 20:07:45,340 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 20:07:45,340 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213841647] [2021-07-09 20:07:45,341 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213841647] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 20:07:45,341 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 20:07:45,341 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-09 20:07:45,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639037262] [2021-07-09 20:07:45,345 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-09 20:07:45,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 20:07:45,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-09 20:07:45,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-09 20:07:45,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-09 20:07:45,359 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-09 20:07:45,359 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2021-07-09 20:07:45,359 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-09 20:07:45,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-09 20:07:45,452 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-07-09 20:07:45,453 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 20:07:45,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 20:07:45,456 INFO L82 PathProgramCache]: Analyzing trace with hash -1185872858, now seen corresponding path program 2 times [2021-07-09 20:07:45,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 20:07:45,456 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731017123] [2021-07-09 20:07:45,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 20:07:45,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 20:07:45,707 WARN L205 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 459 DAG size of output: 196 [2021-07-09 20:07:45,992 WARN L205 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 192 DAG size of output: 47 [2021-07-09 20:07:46,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-09 20:07:46,044 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 20:07:46,045 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731017123] [2021-07-09 20:07:46,045 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731017123] provided 1 perfect and 0 imperfect interpolant sequences [2021-07-09 20:07:46,045 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-07-09 20:07:46,045 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-07-09 20:07:46,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014940640] [2021-07-09 20:07:46,046 INFO L462 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-07-09 20:07:46,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 20:07:46,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-07-09 20:07:46,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-07-09 20:07:46,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-09 20:07:46,047 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-09 20:07:46,047 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2021-07-09 20:07:46,047 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-07-09 20:07:46,047 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-09 20:07:46,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-09 20:07:46,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-07-09 20:07:46,116 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-07-09 20:07:46,121 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-09 20:07:46,123 INFO L202 PluginConnector]: Adding new model collitem-symm.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.07 08:07:46 BasicIcfg [2021-07-09 20:07:46,123 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-09 20:07:46,124 INFO L168 Benchmark]: Toolchain (without parser) took 2539.47 ms. Allocated memory was 197.1 MB in the beginning and 242.2 MB in the end (delta: 45.1 MB). Free memory was 177.3 MB in the beginning and 120.5 MB in the end (delta: 56.8 MB). Peak memory consumption was 102.4 MB. Max. memory is 8.0 GB. [2021-07-09 20:07:46,124 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.11 ms. Allocated memory is still 197.1 MB. Free memory was 178.4 MB in the beginning and 178.3 MB in the end (delta: 89.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-07-09 20:07:46,128 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.45 ms. Allocated memory is still 197.1 MB. Free memory was 177.2 MB in the beginning and 175.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-09 20:07:46,130 INFO L168 Benchmark]: Boogie Preprocessor took 14.31 ms. Allocated memory is still 197.1 MB. Free memory was 175.8 MB in the beginning and 174.8 MB in the end (delta: 968.5 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-07-09 20:07:46,131 INFO L168 Benchmark]: RCFGBuilder took 287.96 ms. Allocated memory is still 197.1 MB. Free memory was 174.8 MB in the beginning and 160.9 MB in the end (delta: 13.9 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-07-09 20:07:46,132 INFO L168 Benchmark]: TraceAbstraction took 2213.48 ms. Allocated memory was 197.1 MB in the beginning and 242.2 MB in the end (delta: 45.1 MB). Free memory was 160.5 MB in the beginning and 120.5 MB in the end (delta: 40.0 MB). Peak memory consumption was 86.7 MB. Max. memory is 8.0 GB. [2021-07-09 20:07:46,133 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 0.11 ms. Allocated memory is still 197.1 MB. Free memory was 178.4 MB in the beginning and 178.3 MB in the end (delta: 89.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 19.45 ms. Allocated memory is still 197.1 MB. Free memory was 177.2 MB in the beginning and 175.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 14.31 ms. Allocated memory is still 197.1 MB. Free memory was 175.8 MB in the beginning and 174.8 MB in the end (delta: 968.5 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 287.96 ms. Allocated memory is still 197.1 MB. Free memory was 174.8 MB in the beginning and 160.9 MB in the end (delta: 13.9 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2213.48 ms. Allocated memory was 197.1 MB in the beginning and 242.2 MB in the end (delta: 45.1 MB). Free memory was 160.5 MB in the beginning and 120.5 MB in the end (delta: 40.0 MB). Peak memory consumption was 86.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: DistributingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DistributingIndependenceRelation.Statistics on underlying relations: [ CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, SemanticConditionEliminator.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Eliminated conditions: 0, SemanticConditionEliminator.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 0, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 0, negative conditional: 0, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Eliminated conditions: 0 ], Maximal queried relation: -1, Independence queries for same thread: 0 - PositiveResult [Line: 50]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 5 procedures, 23 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2139.1ms, OverallIterations: 2, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 23.7ms, PartialOrderReductionTime: 170.5ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, InterpolantAutomatonStates: 8, 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: 9.5ms SsaConstructionTime, 135.0ms SatisfiabilityAnalysisTime, 1646.0ms InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 602 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! Received shutdown request...