/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-Lockstep.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/min-le-max.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-a47a088281b0b97d17910950432b7c5b5bc3adeb-a47a088 [2021-07-14 07:10:56,078 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-14 07:10:56,079 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-14 07:10:56,099 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-14 07:10:56,127 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-Lockstep.epf [2021-07-14 07:10:56,142 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-14 07:10:56,143 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-14 07:10:56,143 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-14 07:10:56,143 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-14 07:10:56,144 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-14 07:10:56,144 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-14 07:10:56,144 INFO L138 SettingsManager]: * Use SBE=true [2021-07-14 07:10:56,144 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-14 07:10:56,144 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-14 07:10:56,144 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-14 07:10:56,144 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-14 07:10:56,145 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-14 07:10:56,145 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-14 07:10:56,145 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-14 07:10:56,145 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-14 07:10:56,145 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-14 07:10:56,145 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-14 07:10:56,145 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-14 07:10:56,145 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-14 07:10:56,145 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-14 07:10:56,146 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-14 07:10:56,146 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-14 07:10:56,146 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-14 07:10:56,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-14 07:10:56,146 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-14 07:10:56,146 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-14 07:10:56,146 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-14 07:10:56,146 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-14 07:10:56,147 INFO L138 SettingsManager]: * DFS Order used in POR=PSEUDO_LOCKSTEP [2021-07-14 07:10:56,147 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-14 07:10:56,147 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-14 07:10:56,147 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-07-14 07:10:56,147 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-14 07:10:56,147 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2021-07-14 07:10:56,147 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-14 07:10:56,365 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-14 07:10:56,384 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-14 07:10:56,386 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-14 07:10:56,386 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-14 07:10:56,388 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-14 07:10:56,388 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/min-le-max.wvr.bpl [2021-07-14 07:10:56,389 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/min-le-max.wvr.bpl' [2021-07-14 07:10:56,405 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-14 07:10:56,406 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-14 07:10:56,408 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-14 07:10:56,408 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-14 07:10:56,408 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-14 07:10:56,416 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "min-le-max.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 07:10:56" (1/1) ... [2021-07-14 07:10:56,422 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "min-le-max.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 07:10:56" (1/1) ... [2021-07-14 07:10:56,427 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-14 07:10:56,428 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-14 07:10:56,428 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-14 07:10:56,428 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-14 07:10:56,433 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "min-le-max.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 07:10:56" (1/1) ... [2021-07-14 07:10:56,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "min-le-max.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 07:10:56" (1/1) ... [2021-07-14 07:10:56,434 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "min-le-max.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 07:10:56" (1/1) ... [2021-07-14 07:10:56,434 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "min-le-max.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 07:10:56" (1/1) ... [2021-07-14 07:10:56,436 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "min-le-max.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 07:10:56" (1/1) ... [2021-07-14 07:10:56,438 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "min-le-max.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 07:10:56" (1/1) ... [2021-07-14 07:10:56,439 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "min-le-max.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 07:10:56" (1/1) ... [2021-07-14 07:10:56,439 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-14 07:10:56,442 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-14 07:10:56,442 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-14 07:10:56,442 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-14 07:10:56,443 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "min-le-max.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 07:10:56" (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 [2021-07-14 07:10:56,490 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-14 07:10:56,491 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-14 07:10:56,491 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-14 07:10:56,491 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-14 07:10:56,491 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-14 07:10:56,491 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-14 07:10:56,491 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-14 07:10:56,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-14 07:10:56,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-14 07:10:56,491 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-07-14 07:10:56,491 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-07-14 07:10:56,491 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-07-14 07:10:56,492 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-14 07:10:56,646 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-14 07:10:56,646 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-14 07:10:56,647 INFO L202 PluginConnector]: Adding new model min-le-max.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 07:10:56 BoogieIcfgContainer [2021-07-14 07:10:56,647 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-14 07:10:56,648 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-14 07:10:56,648 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-14 07:10:56,650 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-14 07:10:56,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "min-le-max.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 07:10:56" (1/2) ... [2021-07-14 07:10:56,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e2242ce and model type min-le-max.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 07:10:56, skipping insertion in model container [2021-07-14 07:10:56,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "min-le-max.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 07:10:56" (2/2) ... [2021-07-14 07:10:56,652 INFO L111 eAbstractionObserver]: Analyzing ICFG min-le-max.wvr.bpl [2021-07-14 07:10:56,657 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-14 07:10:56,657 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-14 07:10:56,657 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-14 07:10:56,658 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-14 07:10:56,719 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-07-14 07:10:56,751 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 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 [2021-07-14 07:10:56,794 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-14 07:10:56,794 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-14 07:10:56,794 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-14 07:10:56,794 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-14 07:10:56,795 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-14 07:10:56,795 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-14 07:10:56,795 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-14 07:10:56,795 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-14 07:10:56,854 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 07:10:56,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 07:10:56,857 INFO L82 PathProgramCache]: Analyzing trace with hash 474168096, now seen corresponding path program 1 times [2021-07-14 07:10:56,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 07:10:56,866 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980146302] [2021-07-14 07:10:56,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 07:10:56,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 07:10:57,069 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-07-14 07:10:57,070 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 07:10:57,070 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980146302] [2021-07-14 07:10:57,070 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980146302] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 07:10:57,071 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [241321031] [2021-07-14 07:10:57,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 07:10:57,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 07:10:57,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 7 conjunts are in the unsatisfiable core [2021-07-14 07:10:57,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 07:10:57,245 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-07-14 07:10:57,245 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [241321031] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 07:10:57,245 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 07:10:57,246 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 6 [2021-07-14 07:10:57,247 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092609976] [2021-07-14 07:10:57,249 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-07-14 07:10:57,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 07:10:57,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-07-14 07:10:57,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-07-14 07:10:57,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 07:10:57,259 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 07:10:57,260 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 6 states have internal predecessors, (34), 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) [2021-07-14 07:10:57,260 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 07:10:57,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-07-14 07:10:57,545 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-07-14 07:10:57,546 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 07:10:57,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 07:10:57,546 INFO L82 PathProgramCache]: Analyzing trace with hash -1100627440, now seen corresponding path program 2 times [2021-07-14 07:10:57,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 07:10:57,547 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005210604] [2021-07-14 07:10:57,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 07:10:57,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 07:10:57,711 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-07-14 07:10:57,711 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 07:10:57,711 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005210604] [2021-07-14 07:10:57,711 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005210604] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 07:10:57,712 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120253690] [2021-07-14 07:10:57,712 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 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 [2021-07-14 07:10:57,742 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-14 07:10:57,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 07:10:57,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 12 conjunts are in the unsatisfiable core [2021-07-14 07:10:57,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 07:10:57,851 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-07-14 07:10:57,861 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-14 07:10:57,862 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 07:10:57,862 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-14 07:10:57,863 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:3 [2021-07-14 07:10:57,907 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-07-14 07:10:57,907 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120253690] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 07:10:57,907 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 07:10:57,907 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-07-14 07:10:57,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847506602] [2021-07-14 07:10:57,908 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-14 07:10:57,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 07:10:57,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-14 07:10:57,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-07-14 07:10:57,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 07:10:57,909 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 07:10:57,909 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 7 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 07:10:57,909 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-07-14 07:10:57,909 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 07:10:58,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-14 07:10:58,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-14 07:10:58,328 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 07:10:58,333 INFO L247 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-07-14 07:10:58,334 INFO L202 PluginConnector]: Adding new model min-le-max.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.07 07:10:58 BasicIcfg [2021-07-14 07:10:58,334 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-07-14 07:10:58,335 INFO L168 Benchmark]: Toolchain (without parser) took 1928.32 ms. Allocated memory is still 195.0 MB. Free memory was 175.0 MB in the beginning and 124.9 MB in the end (delta: 50.1 MB). Peak memory consumption was 50.1 MB. Max. memory is 8.0 GB. [2021-07-14 07:10:58,335 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 195.0 MB. Free memory is still 176.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-14 07:10:58,335 INFO L168 Benchmark]: Boogie Procedure Inliner took 19.45 ms. Allocated memory is still 195.0 MB. Free memory was 174.8 MB in the beginning and 173.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-07-14 07:10:58,335 INFO L168 Benchmark]: Boogie Preprocessor took 11.24 ms. Allocated memory is still 195.0 MB. Free memory was 173.5 MB in the beginning and 172.5 MB in the end (delta: 961.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-07-14 07:10:58,335 INFO L168 Benchmark]: RCFGBuilder took 205.57 ms. Allocated memory is still 195.0 MB. Free memory was 172.5 MB in the beginning and 161.4 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-07-14 07:10:58,335 INFO L168 Benchmark]: TraceAbstraction took 1685.88 ms. Allocated memory is still 195.0 MB. Free memory was 160.9 MB in the beginning and 124.9 MB in the end (delta: 36.0 MB). Peak memory consumption was 36.5 MB. Max. memory is 8.0 GB. [2021-07-14 07:10:58,336 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 195.0 MB. Free memory is still 176.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 19.45 ms. Allocated memory is still 195.0 MB. Free memory was 174.8 MB in the beginning and 173.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 8.0 GB. * Boogie Preprocessor took 11.24 ms. Allocated memory is still 195.0 MB. Free memory was 173.5 MB in the beginning and 172.5 MB in the end (delta: 961.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 205.57 ms. Allocated memory is still 195.0 MB. Free memory was 172.5 MB in the beginning and 161.4 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1685.88 ms. Allocated memory is still 195.0 MB. Free memory was 160.9 MB in the beginning and 124.9 MB in the end (delta: 36.0 MB). Peak memory consumption was 36.5 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: 1602, positive: 1453, positive conditional: 1453, positive unconditional: 0, negative: 149, negative conditional: 149, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: DistributingIndependenceRelation.Independence Queries: [ total: 1457, positive: 1453, positive conditional: 1453, positive unconditional: 0, negative: 4, negative conditional: 4, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DistributingIndependenceRelation.Statistics on underlying relations: [ CachedIndependenceRelation.Independence Queries: [ total: 1457, positive: 1419, positive conditional: 0, positive unconditional: 1419, negative: 38, negative conditional: 0, negative unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 118, positive: 114, positive conditional: 0, positive unconditional: 114, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 118, positive: 114, positive conditional: 0, positive unconditional: 114, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Independence Queries: [ total: 4, positive: 0, positive conditional: 0, positive unconditional: 0, negative: 4, negative conditional: 0, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 25, positive: 8, positive conditional: 8, positive unconditional: 0, negative: 17, negative conditional: 13, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 67, positive: 9, positive conditional: 9, positive unconditional: 0, negative: 57, negative conditional: 24, negative unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1457, positive: 1305, positive conditional: 0, positive unconditional: 1305, negative: 34, negative conditional: 0, negative unconditional: 34, unknown: 118, unknown conditional: 0, unknown unconditional: 118] , Statistics on independence cache: Total cache size (in pairs): 139, Positive cache size: 122, Positive conditional cache size: 8, Positive unconditional cache size: 114, Negative cache size: 17, Negative conditional cache size: 13, Negative unconditional cache size: 4, SemanticConditionEliminator.Independence Queries: [ total: 70, positive: 34, positive conditional: 34, positive unconditional: 0, negative: 36, negative conditional: 28, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 70, positive: 34, positive conditional: 34, positive unconditional: 0, negative: 36, negative conditional: 28, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 25, positive: 8, positive conditional: 8, positive unconditional: 0, negative: 17, negative conditional: 13, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 67, positive: 9, positive conditional: 9, positive unconditional: 0, negative: 57, negative conditional: 24, negative unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 70, positive: 26, positive conditional: 26, positive unconditional: 0, negative: 23, negative conditional: 15, negative unconditional: 8, unknown: 21, unknown conditional: 21, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 139, Positive cache size: 122, Positive conditional cache size: 8, Positive unconditional cache size: 114, Negative cache size: 17, Negative conditional cache size: 13, Negative unconditional cache size: 4, Eliminated conditions: 8, SemanticConditionEliminator.Independence Queries: [ total: 70, positive: 34, positive conditional: 34, positive unconditional: 0, negative: 36, negative conditional: 28, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 70, positive: 34, positive conditional: 34, positive unconditional: 0, negative: 36, negative conditional: 28, negative unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SemanticIndependenceRelation.Independence Queries: [ total: 25, positive: 8, positive conditional: 8, positive unconditional: 0, negative: 17, negative conditional: 13, negative unconditional: 4, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 67, positive: 9, positive conditional: 9, positive unconditional: 0, negative: 57, negative conditional: 24, negative unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 70, positive: 26, positive conditional: 26, positive unconditional: 0, negative: 23, negative conditional: 15, negative unconditional: 8, unknown: 21, unknown conditional: 21, unknown unconditional: 0] , Statistics on independence cache: Total cache size (in pairs): 139, Positive cache size: 122, Positive conditional cache size: 8, Positive unconditional cache size: 114, Negative cache size: 17, Negative conditional cache size: 13, Negative unconditional cache size: 4, Eliminated conditions: 8 ], Maximal queried relation: 2, Independence queries for same thread: 145 - PositiveResult [Line: 52]: 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 7 procedures, 41 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1570.2ms, OverallIterations: 2, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.0ms, PartialOrderReductionTime: 334.4ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 18, 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: 21.6ms SsaConstructionTime, 113.3ms SatisfiabilityAnalysisTime, 519.2ms InterpolantComputationTime, 126 NumberOfCodeBlocks, 126 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 122 ConstructedInterpolants, 0 QuantifiedInterpolants, 466 SizeOfPredicates, 6 NumberOfNonLiveVariables, 141 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 4 InterpolantComputations, 0 PerfectInterpolantSequences, 45/82 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...