/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-NewStatesSleep-NoLbe-Symm.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/figure1-alt.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-98196c323137eee61a7c1131837b356358d783d4-98196c3 [2021-06-16 20:52:49,773 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-16 20:52:49,775 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-16 20:52:49,817 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-16 20:52:49,876 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-NewStatesSleep-NoLbe-Symm.epf [2021-06-16 20:52:49,912 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-16 20:52:49,912 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-16 20:52:49,912 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-16 20:52:49,913 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-16 20:52:49,915 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-16 20:52:49,915 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-16 20:52:49,915 INFO L138 SettingsManager]: * Use SBE=true [2021-06-16 20:52:49,916 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-16 20:52:49,916 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-16 20:52:49,916 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-16 20:52:49,917 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-16 20:52:49,926 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-16 20:52:49,927 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-16 20:52:49,927 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-16 20:52:49,927 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-16 20:52:49,927 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-16 20:52:49,927 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-16 20:52:49,927 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-16 20:52:49,928 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-16 20:52:49,928 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-16 20:52:49,928 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-16 20:52:49,928 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-16 20:52:49,928 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-16 20:52:49,928 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-16 20:52:49,928 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-16 20:52:49,929 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-16 20:52:49,929 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-16 20:52:49,929 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-16 20:52:49,929 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-16 20:52:49,929 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-16 20:52:49,929 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-16 20:52:49,929 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-16 20:52:49,930 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2021-06-16 20:52:49,930 INFO L138 SettingsManager]: * Limit POR to symmetric independence in concurrent analysis=true [2021-06-16 20:52:49,930 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-16 20:52:50,207 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-16 20:52:50,227 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-16 20:52:50,229 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-16 20:52:50,230 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-16 20:52:50,230 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-16 20:52:50,231 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/figure1-alt.wvr.bpl [2021-06-16 20:52:50,231 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/figure1-alt.wvr.bpl' [2021-06-16 20:52:50,257 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-16 20:52:50,258 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-16 20:52:50,259 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-16 20:52:50,259 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-16 20:52:50,260 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-16 20:52:50,271 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "figure1-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 08:52:50" (1/1) ... [2021-06-16 20:52:50,278 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "figure1-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 08:52:50" (1/1) ... [2021-06-16 20:52:50,286 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-16 20:52:50,287 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-16 20:52:50,287 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-16 20:52:50,287 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-16 20:52:50,294 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "figure1-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 08:52:50" (1/1) ... [2021-06-16 20:52:50,294 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "figure1-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 08:52:50" (1/1) ... [2021-06-16 20:52:50,295 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "figure1-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 08:52:50" (1/1) ... [2021-06-16 20:52:50,296 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "figure1-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 08:52:50" (1/1) ... [2021-06-16 20:52:50,298 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "figure1-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 08:52:50" (1/1) ... [2021-06-16 20:52:50,301 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "figure1-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 08:52:50" (1/1) ... [2021-06-16 20:52:50,301 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "figure1-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 08:52:50" (1/1) ... [2021-06-16 20:52:50,303 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-16 20:52:50,305 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-16 20:52:50,305 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-16 20:52:50,305 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-16 20:52:50,306 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "figure1-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 08:52:50" (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 [2021-06-16 20:52:50,378 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-16 20:52:50,378 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-16 20:52:50,378 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-16 20:52:50,378 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-16 20:52:50,379 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-16 20:52:50,379 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-16 20:52:50,379 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-16 20:52:50,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-16 20:52:50,379 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-16 20:52:50,380 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-16 20:52:50,563 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-16 20:52:50,563 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-16 20:52:50,565 INFO L202 PluginConnector]: Adding new model figure1-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.06 08:52:50 BoogieIcfgContainer [2021-06-16 20:52:50,567 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-16 20:52:50,579 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-16 20:52:50,579 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-16 20:52:50,582 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-16 20:52:50,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "figure1-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 16.06 08:52:50" (1/2) ... [2021-06-16 20:52:50,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b019341 and model type figure1-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.06 08:52:50, skipping insertion in model container [2021-06-16 20:52:50,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "figure1-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.06 08:52:50" (2/2) ... [2021-06-16 20:52:50,584 INFO L111 eAbstractionObserver]: Analyzing ICFG figure1-alt.wvr.bpl [2021-06-16 20:52:50,588 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-16 20:52:50,589 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-16 20:52:50,589 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-16 20:52:50,589 INFO L470 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-16 20:52:50,631 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-06-16 20:52:50,650 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 [2021-06-16 20:52:50,706 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-16 20:52:50,706 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-16 20:52:50,706 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-16 20:52:50,707 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-16 20:52:50,707 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-16 20:52:50,707 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-16 20:52:50,707 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-16 20:52:50,707 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-16 20:52:50,831 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 20:52:50,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 20:52:50,836 INFO L82 PathProgramCache]: Analyzing trace with hash -2007172443, now seen corresponding path program 1 times [2021-06-16 20:52:50,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 20:52:50,850 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176801182] [2021-06-16 20:52:50,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 20:52:50,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 20:52:51,000 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 20:52:51,001 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 20:52:51,001 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176801182] [2021-06-16 20:52:51,002 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176801182] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 20:52:51,002 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 20:52:51,002 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-06-16 20:52:51,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998346717] [2021-06-16 20:52:51,008 INFO L462 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-06-16 20:52:51,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 20:52:51,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-06-16 20:52:51,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-06-16 20:52:51,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-16 20:52:51,026 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-16 20:52:51,030 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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) [2021-06-16 20:52:51,030 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-16 20:52:51,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-16 20:52:51,083 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-06-16 20:52:51,084 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 20:52:51,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 20:52:51,084 INFO L82 PathProgramCache]: Analyzing trace with hash 1011322467, now seen corresponding path program 2 times [2021-06-16 20:52:51,085 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 20:52:51,085 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162944425] [2021-06-16 20:52:51,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 20:52:51,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 20:52:51,415 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 20:52:51,415 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 20:52:51,415 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162944425] [2021-06-16 20:52:51,415 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162944425] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 20:52:51,415 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660085570] [2021-06-16 20:52:51,416 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-16 20:52:51,476 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-16 20:52:51,476 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-16 20:52:51,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 21 conjunts are in the unsatisfiable core [2021-06-16 20:52:51,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-16 20:52:51,913 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 20:52:51,913 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660085570] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 20:52:51,914 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-16 20:52:51,914 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2021-06-16 20:52:51,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997333830] [2021-06-16 20:52:51,917 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-06-16 20:52:51,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 20:52:51,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-06-16 20:52:51,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2021-06-16 20:52:51,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-16 20:52:51,921 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-16 20:52:51,921 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 20 states have internal predecessors, (40), 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) [2021-06-16 20:52:51,921 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-16 20:52:51,921 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-16 20:52:52,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-16 20:52:52,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-16 20:52:52,282 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-16 20:52:52,283 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 20:52:52,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 20:52:52,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1612961119, now seen corresponding path program 3 times [2021-06-16 20:52:52,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 20:52:52,284 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1054271324] [2021-06-16 20:52:52,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 20:52:52,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 20:52:52,492 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-06-16 20:52:52,492 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 20:52:52,492 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1054271324] [2021-06-16 20:52:52,493 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1054271324] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 20:52:52,493 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1120854926] [2021-06-16 20:52:52,493 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-16 20:52:52,526 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-16 20:52:52,527 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-16 20:52:52,528 WARN L261 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-16 20:52:52,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-16 20:52:52,905 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 20:52:52,905 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1120854926] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 20:52:52,905 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-16 20:52:52,905 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12] total 20 [2021-06-16 20:52:52,906 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934430098] [2021-06-16 20:52:52,906 INFO L462 AbstractCegarLoop]: Interpolant automaton has 21 states [2021-06-16 20:52:52,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 20:52:52,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-06-16 20:52:52,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2021-06-16 20:52:52,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-16 20:52:52,907 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-16 20:52:52,908 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 21 states, 21 states have (on average 2.0) internal successors, (42), 20 states have internal predecessors, (42), 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) [2021-06-16 20:52:52,908 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-16 20:52:52,908 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-16 20:52:52,908 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-16 20:52:53,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-16 20:52:53,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-16 20:52:53,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-16 20:52:53,540 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-16 20:52:53,541 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 20:52:53,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 20:52:53,542 INFO L82 PathProgramCache]: Analyzing trace with hash -2083717471, now seen corresponding path program 4 times [2021-06-16 20:52:53,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 20:52:53,542 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272196162] [2021-06-16 20:52:53,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 20:52:53,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 20:52:53,699 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-06-16 20:52:53,701 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 20:52:53,701 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272196162] [2021-06-16 20:52:53,702 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272196162] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 20:52:53,702 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574546717] [2021-06-16 20:52:53,702 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-16 20:52:53,735 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-16 20:52:53,735 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-16 20:52:53,736 WARN L261 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 33 conjunts are in the unsatisfiable core [2021-06-16 20:52:53,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-16 20:52:54,119 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 20:52:54,120 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574546717] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 20:52:54,121 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-16 20:52:54,121 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 14] total 22 [2021-06-16 20:52:54,126 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116026670] [2021-06-16 20:52:54,127 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-16 20:52:54,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 20:52:54,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-16 20:52:54,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2021-06-16 20:52:54,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-16 20:52:54,128 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-16 20:52:54,128 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 2.0869565217391304) internal successors, (48), 22 states have internal predecessors, (48), 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) [2021-06-16 20:52:54,128 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-16 20:52:54,129 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-16 20:52:54,129 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2021-06-16 20:52:54,129 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-16 20:52:54,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-16 20:52:54,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-06-16 20:52:54,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-06-16 20:52:54,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-16 20:52:55,084 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-16 20:52:55,085 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 20:52:55,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 20:52:55,085 INFO L82 PathProgramCache]: Analyzing trace with hash 412389263, now seen corresponding path program 1 times [2021-06-16 20:52:55,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 20:52:55,086 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897681387] [2021-06-16 20:52:55,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 20:52:55,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 20:52:55,255 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-06-16 20:52:55,255 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 20:52:55,255 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897681387] [2021-06-16 20:52:55,255 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897681387] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 20:52:55,256 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1660184980] [2021-06-16 20:52:55,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-16 20:52:55,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 20:52:55,291 WARN L261 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 25 conjunts are in the unsatisfiable core [2021-06-16 20:52:55,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-16 20:52:55,562 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 20:52:55,562 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1660184980] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-16 20:52:55,562 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-16 20:52:55,562 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12] total 19 [2021-06-16 20:52:55,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942048794] [2021-06-16 20:52:55,563 INFO L462 AbstractCegarLoop]: Interpolant automaton has 20 states [2021-06-16 20:52:55,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 20:52:55,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-06-16 20:52:55,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2021-06-16 20:52:55,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-16 20:52:55,563 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-16 20:52:55,564 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 20 states, 20 states have (on average 2.0) internal successors, (40), 19 states have internal predecessors, (40), 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) [2021-06-16 20:52:55,564 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-16 20:52:55,564 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-06-16 20:52:55,564 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 19 states. [2021-06-16 20:52:55,564 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 27 states. [2021-06-16 20:52:55,564 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-16 20:52:57,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-16 20:52:57,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-16 20:52:57,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-16 20:52:57,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-16 20:52:57,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-16 20:52:57,262 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-16 20:52:57,262 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-16 20:52:57,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-16 20:52:57,263 INFO L82 PathProgramCache]: Analyzing trace with hash 862376343, now seen corresponding path program 1 times [2021-06-16 20:52:57,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-16 20:52:57,263 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64678871] [2021-06-16 20:52:57,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-16 20:52:57,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-16 20:52:57,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-16 20:52:57,349 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-16 20:52:57,349 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64678871] [2021-06-16 20:52:57,349 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64678871] provided 1 perfect and 0 imperfect interpolant sequences [2021-06-16 20:52:57,349 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-06-16 20:52:57,349 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-06-16 20:52:57,349 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497651308] [2021-06-16 20:52:57,350 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-16 20:52:57,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-16 20:52:57,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-16 20:52:57,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-06-16 20:52:57,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-16 20:52:57,351 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-16 20:52:57,351 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 8 states have internal predecessors, (15), 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) [2021-06-16 20:52:57,351 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-06-16 20:52:57,351 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-06-16 20:52:57,351 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 24 states. [2021-06-16 20:52:57,351 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 32 states. [2021-06-16 20:52:57,351 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 27 states. [2021-06-16 20:52:57,351 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-16 20:52:57,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-06-16 20:52:57,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-16 20:52:57,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-06-16 20:52:57,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-06-16 20:52:57,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-16 20:52:57,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-16 20:52:57,473 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-06-16 20:52:57,479 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-06-16 20:52:57,481 INFO L202 PluginConnector]: Adding new model figure1-alt.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.06 08:52:57 BasicIcfg [2021-06-16 20:52:57,481 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-06-16 20:52:57,481 INFO L168 Benchmark]: Toolchain (without parser) took 7223.22 ms. Allocated memory was 199.2 MB in the beginning and 304.1 MB in the end (delta: 104.9 MB). Free memory was 180.4 MB in the beginning and 169.9 MB in the end (delta: 10.5 MB). Peak memory consumption was 117.8 MB. Max. memory is 8.0 GB. [2021-06-16 20:52:57,481 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 199.2 MB. Free memory is still 181.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-16 20:52:57,482 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.23 ms. Allocated memory is still 199.2 MB. Free memory was 180.2 MB in the beginning and 178.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-16 20:52:57,482 INFO L168 Benchmark]: Boogie Preprocessor took 15.79 ms. Allocated memory is still 199.2 MB. Free memory was 178.8 MB in the beginning and 177.9 MB in the end (delta: 906.8 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-16 20:52:57,482 INFO L168 Benchmark]: RCFGBuilder took 262.22 ms. Allocated memory is still 199.2 MB. Free memory was 177.8 MB in the beginning and 166.2 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-06-16 20:52:57,482 INFO L168 Benchmark]: TraceAbstraction took 6901.79 ms. Allocated memory was 199.2 MB in the beginning and 304.1 MB in the end (delta: 104.9 MB). Free memory was 165.7 MB in the beginning and 169.9 MB in the end (delta: -4.2 MB). Peak memory consumption was 102.1 MB. Max. memory is 8.0 GB. [2021-06-16 20:52:57,482 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 199.2 MB. Free memory is still 181.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 27.23 ms. Allocated memory is still 199.2 MB. Free memory was 180.2 MB in the beginning and 178.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 15.79 ms. Allocated memory is still 199.2 MB. Free memory was 178.8 MB in the beginning and 177.9 MB in the end (delta: 906.8 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 262.22 ms. Allocated memory is still 199.2 MB. Free memory was 177.8 MB in the beginning and 166.2 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 6901.79 ms. Allocated memory was 199.2 MB in the beginning and 304.1 MB in the end (delta: 104.9 MB). Free memory was 165.7 MB in the beginning and 169.9 MB in the end (delta: -4.2 MB). Peak memory consumption was 102.1 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: 699, positive: 547, positive conditional: 547, positive unconditional: 0, negative: 152, negative conditional: 152, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: DistributingIndependenceRelation.Independence Queries: [ total: 561, positive: 547, positive conditional: 547, positive unconditional: 0, negative: 14, negative conditional: 14, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DistributingIndependenceRelation.Statistics on underlying relations: [ CachedIndependenceRelation.Independence Queries: [ total: 561, positive: 535, positive conditional: 0, positive unconditional: 535, negative: 26, negative conditional: 0, negative unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 24, positive: 23, positive conditional: 0, positive unconditional: 23, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 24, positive: 23, positive conditional: 0, positive unconditional: 23, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 1, negative conditional: 0, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 19, positive: 6, positive conditional: 6, positive unconditional: 0, negative: 13, negative conditional: 12, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 159, positive: 31, positive conditional: 31, positive unconditional: 0, negative: 128, negative conditional: 44, negative unconditional: 84, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 561, positive: 512, positive conditional: 0, positive unconditional: 512, negative: 25, negative conditional: 0, negative unconditional: 25, unknown: 24, unknown conditional: 0, unknown unconditional: 24] , Statistics on independence cache: Total cache size (in pairs): 42, Positive cache size: 29, Positive conditional cache size: 6, Positive unconditional cache size: 23, Negative cache size: 13, Negative conditional cache size: 12, Negative unconditional cache size: 1, SemanticConditionEliminator.Independence Queries: [ total: 100, positive: 12, positive conditional: 12, positive unconditional: 0, negative: 88, negative conditional: 40, negative unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 100, positive: 12, positive conditional: 12, positive unconditional: 0, negative: 88, negative conditional: 40, negative unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 19, positive: 6, positive conditional: 6, positive unconditional: 0, negative: 13, negative conditional: 12, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 159, positive: 31, positive conditional: 31, positive unconditional: 0, negative: 128, negative conditional: 44, negative unconditional: 84, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 100, positive: 6, positive conditional: 6, positive unconditional: 0, negative: 76, negative conditional: 28, negative unconditional: 48, unknown: 18, unknown conditional: 18, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 42, Positive cache size: 29, Positive conditional cache size: 6, Positive unconditional cache size: 23, Negative cache size: 13, Negative conditional cache size: 12, Negative unconditional cache size: 1, Eliminated conditions: 48, SemanticConditionEliminator.Independence Queries: [ total: 100, positive: 12, positive conditional: 12, positive unconditional: 0, negative: 88, negative conditional: 40, negative unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 100, positive: 12, positive conditional: 12, positive unconditional: 0, negative: 88, negative conditional: 40, negative unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 19, positive: 6, positive conditional: 6, positive unconditional: 0, negative: 13, negative conditional: 12, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 159, positive: 31, positive conditional: 31, positive unconditional: 0, negative: 128, negative conditional: 44, negative unconditional: 84, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 100, positive: 6, positive conditional: 6, positive unconditional: 0, negative: 76, negative conditional: 28, negative unconditional: 48, unknown: 18, unknown conditional: 18, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 42, Positive cache size: 29, Positive conditional cache size: 6, Positive unconditional cache size: 23, Negative cache size: 13, Negative conditional cache size: 12, Negative unconditional cache size: 1, Eliminated conditions: 48, SemanticConditionEliminator.Independence Queries: [ total: 100, positive: 12, positive conditional: 12, positive unconditional: 0, negative: 88, negative conditional: 40, negative unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 100, positive: 12, positive conditional: 12, positive unconditional: 0, negative: 88, negative conditional: 40, negative unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 19, positive: 6, positive conditional: 6, positive unconditional: 0, negative: 13, negative conditional: 12, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 159, positive: 31, positive conditional: 31, positive unconditional: 0, negative: 128, negative conditional: 44, negative unconditional: 84, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 100, positive: 6, positive conditional: 6, positive unconditional: 0, negative: 76, negative conditional: 28, negative unconditional: 48, unknown: 18, unknown conditional: 18, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 42, Positive cache size: 29, Positive conditional cache size: 6, Positive unconditional cache size: 23, Negative cache size: 13, Negative conditional cache size: 12, Negative unconditional cache size: 1, Eliminated conditions: 48, SemanticConditionEliminator.Independence Queries: [ total: 100, positive: 12, positive conditional: 12, positive unconditional: 0, negative: 88, negative conditional: 40, negative unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 100, positive: 12, positive conditional: 12, positive unconditional: 0, negative: 88, negative conditional: 40, negative unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 19, positive: 6, positive conditional: 6, positive unconditional: 0, negative: 13, negative conditional: 12, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 159, positive: 31, positive conditional: 31, positive unconditional: 0, negative: 128, negative conditional: 44, negative unconditional: 84, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 100, positive: 6, positive conditional: 6, positive unconditional: 0, negative: 76, negative conditional: 28, negative unconditional: 48, unknown: 18, unknown conditional: 18, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 42, Positive cache size: 29, Positive conditional cache size: 6, Positive unconditional cache size: 23, Negative cache size: 13, Negative conditional cache size: 12, Negative unconditional cache size: 1, Eliminated conditions: 48, SemanticConditionEliminator.Independence Queries: [ total: 100, positive: 12, positive conditional: 12, positive unconditional: 0, negative: 88, negative conditional: 40, negative unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 100, positive: 12, positive conditional: 12, positive unconditional: 0, negative: 88, negative conditional: 40, negative unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 19, positive: 6, positive conditional: 6, positive unconditional: 0, negative: 13, negative conditional: 12, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 159, positive: 31, positive conditional: 31, positive unconditional: 0, negative: 128, negative conditional: 44, negative unconditional: 84, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 100, positive: 6, positive conditional: 6, positive unconditional: 0, negative: 76, negative conditional: 28, negative unconditional: 48, unknown: 18, unknown conditional: 18, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 42, Positive cache size: 29, Positive conditional cache size: 6, Positive unconditional cache size: 23, Negative cache size: 13, Negative conditional cache size: 12, Negative unconditional cache size: 1, Eliminated conditions: 48, SemanticConditionEliminator.Independence Queries: [ total: 100, positive: 12, positive conditional: 12, positive unconditional: 0, negative: 88, negative conditional: 40, negative unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 100, positive: 12, positive conditional: 12, positive unconditional: 0, negative: 88, negative conditional: 40, negative unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 19, positive: 6, positive conditional: 6, positive unconditional: 0, negative: 13, negative conditional: 12, negative unconditional: 1, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 159, positive: 31, positive conditional: 31, positive unconditional: 0, negative: 128, negative conditional: 44, negative unconditional: 84, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 100, positive: 6, positive conditional: 6, positive unconditional: 0, negative: 76, negative conditional: 28, negative unconditional: 48, unknown: 18, unknown conditional: 18, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 42, Positive cache size: 29, Positive conditional cache size: 6, Positive unconditional cache size: 23, Negative cache size: 13, Negative conditional cache size: 12, Negative unconditional cache size: 1, Eliminated conditions: 48 ], Maximal queried relation: 6, Independence queries for same thread: 138 - PositiveResult [Line: 51]: 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, 32 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6804.0ms, OverallIterations: 6, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 13.5ms, PartialOrderReductionTime: 3042.8ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 107, 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: 27.2ms SsaConstructionTime, 119.5ms SatisfiabilityAnalysisTime, 2422.3ms InterpolantComputationTime, 222 NumberOfCodeBlocks, 222 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 212 ConstructedInterpolants, 0 QuantifiedInterpolants, 2518 SizeOfPredicates, 20 NumberOfNonLiveVariables, 201 ConjunctsInSsa, 104 ConjunctsInUnsatCore, 10 InterpolantComputations, 2 PerfectInterpolantSequences, 24/104 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...