/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-None-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/dec-subseq.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9e34d99ae2c6837f487980c721c4b6acf9d9b15c-9e34d99 [2021-07-09 21:05:07,586 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-09 21:05:07,587 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-09 21:05:07,609 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-09 21:05:07,642 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-None-NoLbe.epf [2021-07-09 21:05:07,670 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-09 21:05:07,670 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-09 21:05:07,670 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-09 21:05:07,670 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-09 21:05:07,671 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-09 21:05:07,671 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-09 21:05:07,671 INFO L138 SettingsManager]: * Use SBE=true [2021-07-09 21:05:07,671 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-09 21:05:07,671 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-09 21:05:07,671 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-09 21:05:07,672 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-09 21:05:07,672 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-09 21:05:07,672 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-09 21:05:07,672 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-09 21:05:07,672 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-09 21:05:07,672 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-09 21:05:07,672 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-09 21:05:07,672 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-09 21:05:07,672 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-09 21:05:07,672 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-09 21:05:07,672 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-09 21:05:07,673 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-09 21:05:07,673 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-09 21:05:07,673 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-09 21:05:07,673 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-09 21:05:07,673 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-09 21:05:07,673 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-09 21:05:07,673 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-09 21:05:07,673 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-09 21:05:07,673 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-09 21:05:07,673 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-07-09 21:05:07,673 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-09 21:05:07,674 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-09 21:05:07,944 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-09 21:05:07,966 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-09 21:05:07,968 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-09 21:05:07,969 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-09 21:05:07,970 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-09 21:05:07,970 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/dec-subseq.wvr.bpl [2021-07-09 21:05:07,970 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/dec-subseq.wvr.bpl' [2021-07-09 21:05:07,994 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-09 21:05:07,995 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-09 21:05:07,996 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-09 21:05:07,996 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-09 21:05:07,996 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-09 21:05:08,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 09:05:07" (1/1) ... [2021-07-09 21:05:08,009 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 09:05:07" (1/1) ... [2021-07-09 21:05:08,014 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-09 21:05:08,015 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-09 21:05:08,016 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-09 21:05:08,016 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-09 21:05:08,021 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 09:05:07" (1/1) ... [2021-07-09 21:05:08,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 09:05:07" (1/1) ... [2021-07-09 21:05:08,022 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 09:05:07" (1/1) ... [2021-07-09 21:05:08,022 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 09:05:07" (1/1) ... [2021-07-09 21:05:08,025 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 09:05:07" (1/1) ... [2021-07-09 21:05:08,028 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 09:05:07" (1/1) ... [2021-07-09 21:05:08,028 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 09:05:07" (1/1) ... [2021-07-09 21:05:08,029 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-09 21:05:08,030 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-09 21:05:08,030 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-09 21:05:08,031 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-09 21:05:08,032 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 09:05:07" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-09 21:05:08,097 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-09 21:05:08,097 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-09 21:05:08,097 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-09 21:05:08,097 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-09 21:05:08,097 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-09 21:05:08,097 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-09 21:05:08,098 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-09 21:05:08,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-09 21:05:08,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-09 21:05:08,098 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-09 21:05:08,238 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-09 21:05:08,238 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-09 21:05:08,240 INFO L202 PluginConnector]: Adding new model dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 09:05:08 BoogieIcfgContainer [2021-07-09 21:05:08,240 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-09 21:05:08,241 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-09 21:05:08,241 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-09 21:05:08,243 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-09 21:05:08,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 09.07 09:05:07" (1/2) ... [2021-07-09 21:05:08,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f6033d9 and model type dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.07 09:05:08, skipping insertion in model container [2021-07-09 21:05:08,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.07 09:05:08" (2/2) ... [2021-07-09 21:05:08,244 INFO L111 eAbstractionObserver]: Analyzing ICFG dec-subseq.wvr.bpl [2021-07-09 21:05:08,248 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-09 21:05:08,248 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-09 21:05:08,248 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-09 21:05:08,248 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-09 21:05:08,268 INFO L149 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-07-09 21:05:08,282 INFO L255 AbstractCegarLoop]: Starting to check reachability of 3 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-07-09 21:05:08,339 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-09 21:05:08,339 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-09 21:05:08,339 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-09 21:05:08,340 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-09 21:05:08,340 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-09 21:05:08,340 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-09 21:05:08,340 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-09 21:05:08,340 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-09 21:05:08,346 INFO L110 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 28 transitions, 72 flow [2021-07-09 21:05:08,356 INFO L132 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 63 states, 62 states have (on average 2.0161290322580645) internal successors, (125), 62 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 21:05:08,363 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 21:05:08,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 21:05:08,366 INFO L82 PathProgramCache]: Analyzing trace with hash -879164253, now seen corresponding path program 1 times [2021-07-09 21:05:08,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 21:05:08,372 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008798512] [2021-07-09 21:05:08,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 21:05:08,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 21:05:08,621 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-07-09 21:05:08,621 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 21:05:08,622 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008798512] [2021-07-09 21:05:08,622 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008798512] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 21:05:08,622 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077077540] [2021-07-09 21:05:08,622 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 [2021-07-09 21:05:08,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 21:05:08,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 7 conjunts are in the unsatisfiable core [2021-07-09 21:05:08,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-09 21:05:08,803 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-07-09 21:05:08,803 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077077540] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 21:05:08,803 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-09 21:05:08,803 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2021-07-09 21:05:08,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542611739] [2021-07-09 21:05:08,807 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-09 21:05:08,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 21:05:08,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-09 21:05:08,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-07-09 21:05:08,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-09 21:05:08,816 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-09 21:05:08,816 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 21:05:08,816 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-09 21:05:08,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-09 21:05:09,061 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-07-09 21:05:09,061 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 21:05:09,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 21:05:09,062 INFO L82 PathProgramCache]: Analyzing trace with hash 2065829802, now seen corresponding path program 2 times [2021-07-09 21:05:09,062 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 21:05:09,062 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681146070] [2021-07-09 21:05:09,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 21:05:09,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 21:05:09,163 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 40 proven. 22 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-07-09 21:05:09,163 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 21:05:09,163 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [681146070] [2021-07-09 21:05:09,163 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [681146070] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 21:05:09,163 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751353722] [2021-07-09 21:05:09,163 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 [2021-07-09 21:05:09,233 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-09 21:05:09,234 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-09 21:05:09,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 10 conjunts are in the unsatisfiable core [2021-07-09 21:05:09,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-09 21:05:09,438 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 53 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-07-09 21:05:09,439 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751353722] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 21:05:09,439 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-09 21:05:09,439 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2021-07-09 21:05:09,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6911868] [2021-07-09 21:05:09,440 INFO L462 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-07-09 21:05:09,440 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 21:05:09,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-07-09 21:05:09,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-07-09 21:05:09,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-09 21:05:09,441 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-09 21:05:09,441 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 21:05:09,441 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-07-09 21:05:09,441 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-09 21:05:09,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-09 21:05:09,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-09 21:05:09,695 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 21:05:09,695 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 21:05:09,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 21:05:09,695 INFO L82 PathProgramCache]: Analyzing trace with hash 591285512, now seen corresponding path program 3 times [2021-07-09 21:05:09,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 21:05:09,696 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371339795] [2021-07-09 21:05:09,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 21:05:09,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 21:05:09,781 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 91 proven. 58 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-07-09 21:05:09,781 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 21:05:09,782 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371339795] [2021-07-09 21:05:09,782 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371339795] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 21:05:09,782 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028619219] [2021-07-09 21:05:09,782 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 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 [2021-07-09 21:05:09,842 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-07-09 21:05:09,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-09 21:05:09,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 62 conjunts are in the unsatisfiable core [2021-07-09 21:05:09,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-09 21:05:10,996 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-07-09 21:05:10,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 76 treesize of output 132 [2021-07-09 21:05:11,097 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-09 21:05:11,393 WARN L205 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 81 [2021-07-09 21:05:11,394 INFO L628 ElimStorePlain]: treesize reduction 464, result has 44.4 percent of original size [2021-07-09 21:05:11,474 INFO L550 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-09 21:05:11,474 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:84, output treesize:77 [2021-07-09 21:05:12,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:05:12,053 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:05:12,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:05:12,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:05:12,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:05:12,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:05:12,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:05:12,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:05:12,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:05:12,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:05:12,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:05:12,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:05:12,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:05:12,067 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:05:12,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:05:12,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:05:12,135 INFO L354 Elim1Store]: treesize reduction 78, result has 42.2 percent of original size [2021-07-09 21:05:12,135 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 8 select indices, 8 select index equivalence classes, 16 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 12 case distinctions, treesize of input 68 treesize of output 78 [2021-07-09 21:05:12,169 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-09 21:05:12,179 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:05:12,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:05:12,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:05:12,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:05:12,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:05:12,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:05:12,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:05:12,191 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:05:12,192 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:05:12,193 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:05:12,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:05:12,194 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:05:12,196 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:05:12,197 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:05:12,199 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:05:12,200 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:05:12,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:05:12,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:05:12,204 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:05:12,205 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:05:12,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:05:12,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:05:12,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:05:12,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:05:12,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:05:12,295 INFO L354 Elim1Store]: treesize reduction 52, result has 58.4 percent of original size [2021-07-09 21:05:12,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 25 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 11 case distinctions, treesize of input 68 treesize of output 94 [2021-07-09 21:05:12,328 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-07-09 21:05:12,334 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:05:12,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:05:12,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:05:12,336 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:05:12,337 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:05:12,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:05:12,341 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:05:12,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:05:12,345 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:05:12,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:05:12,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:05:12,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:05:12,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:05:12,411 INFO L354 Elim1Store]: treesize reduction 82, result has 7.9 percent of original size [2021-07-09 21:05:12,412 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 13 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 8 case distinctions, treesize of input 57 treesize of output 25 [2021-07-09 21:05:12,415 INFO L550 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2021-07-09 21:05:12,420 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:05:12,421 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:05:12,422 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:05:12,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:05:12,423 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:05:12,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:05:12,426 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:05:12,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:05:12,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:05:12,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:05:12,430 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:05:12,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:05:12,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:05:12,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:05:12,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:05:12,437 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:05:12,438 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:05:12,439 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:05:12,440 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:05:12,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:05:12,441 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:05:12,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:05:12,443 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-07-09 21:05:12,448 INFO L354 Elim1Store]: treesize reduction 148, result has 0.7 percent of original size [2021-07-09 21:05:12,449 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 9 select indices, 9 select index equivalence classes, 23 disjoint index pairs (out of 36 index pairs), introduced 9 new quantified variables, introduced 13 case distinctions, treesize of input 68 treesize of output 1 [2021-07-09 21:05:12,449 INFO L550 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2021-07-09 21:05:12,502 INFO L628 ElimStorePlain]: treesize reduction 24, result has 73.0 percent of original size [2021-07-09 21:05:12,509 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 3 xjuncts. [2021-07-09 21:05:12,509 INFO L247 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:295, output treesize:47 [2021-07-09 21:05:12,635 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 38 proven. 114 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-07-09 21:05:12,635 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1028619219] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 21:05:12,635 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-09 21:05:12,635 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 33] total 39 [2021-07-09 21:05:12,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063519875] [2021-07-09 21:05:12,637 INFO L462 AbstractCegarLoop]: Interpolant automaton has 40 states [2021-07-09 21:05:12,637 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 21:05:12,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-07-09 21:05:12,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=1389, Unknown=0, NotChecked=0, Total=1560 [2021-07-09 21:05:12,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-09 21:05:12,639 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-09 21:05:12,639 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 40 states, 40 states have (on average 3.1) internal successors, (124), 39 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 21:05:12,639 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-07-09 21:05:12,639 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-09 21:05:12,639 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-09 21:05:15,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-09 21:05:15,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-09 21:05:15,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-07-09 21:05:16,137 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 21:05:16,137 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 21:05:16,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 21:05:16,141 INFO L82 PathProgramCache]: Analyzing trace with hash -2126713137, now seen corresponding path program 1 times [2021-07-09 21:05:16,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 21:05:16,141 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116852214] [2021-07-09 21:05:16,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 21:05:16,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 21:05:16,246 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 230 proven. 116 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-07-09 21:05:16,260 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 21:05:16,261 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116852214] [2021-07-09 21:05:16,261 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116852214] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 21:05:16,261 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [867135910] [2021-07-09 21:05:16,261 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 [2021-07-09 21:05:16,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 21:05:16,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 19 conjunts are in the unsatisfiable core [2021-07-09 21:05:16,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-09 21:05:16,481 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 260 proven. 86 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-07-09 21:05:16,481 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [867135910] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 21:05:16,481 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-09 21:05:16,481 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2021-07-09 21:05:16,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257807219] [2021-07-09 21:05:16,481 INFO L462 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-07-09 21:05:16,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 21:05:16,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-07-09 21:05:16,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=87, Unknown=0, NotChecked=0, Total=156 [2021-07-09 21:05:16,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-09 21:05:16,482 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-09 21:05:16,482 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 13 states, 13 states have (on average 7.230769230769231) internal successors, (94), 12 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 21:05:16,482 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-07-09 21:05:16,482 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-09 21:05:16,482 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 54 states. [2021-07-09 21:05:16,482 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-09 21:05:16,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-09 21:05:16,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-09 21:05:16,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-07-09 21:05:16,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-09 21:05:16,769 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 21:05:16,769 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 21:05:16,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 21:05:16,769 INFO L82 PathProgramCache]: Analyzing trace with hash -666495754, now seen corresponding path program 2 times [2021-07-09 21:05:16,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 21:05:16,770 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165567844] [2021-07-09 21:05:16,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 21:05:16,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 21:05:16,937 INFO L134 CoverageAnalysis]: Checked inductivity of 633 backedges. 398 proven. 224 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-07-09 21:05:16,937 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 21:05:16,937 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165567844] [2021-07-09 21:05:16,937 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165567844] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 21:05:16,937 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [9602397] [2021-07-09 21:05:16,937 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 21:05:17,000 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-09 21:05:17,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-09 21:05:17,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 25 conjunts are in the unsatisfiable core [2021-07-09 21:05:17,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-09 21:05:17,205 INFO L134 CoverageAnalysis]: Checked inductivity of 633 backedges. 437 proven. 185 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-07-09 21:05:17,206 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [9602397] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 21:05:17,206 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-09 21:05:17,206 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 15 [2021-07-09 21:05:17,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549373826] [2021-07-09 21:05:17,206 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-09 21:05:17,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-09 21:05:17,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-09 21:05:17,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=132, Unknown=0, NotChecked=0, Total=240 [2021-07-09 21:05:17,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-09 21:05:17,207 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-09 21:05:17,207 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 7.5625) internal successors, (121), 15 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-09 21:05:17,207 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-07-09 21:05:17,207 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 8 states. [2021-07-09 21:05:17,207 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 54 states. [2021-07-09 21:05:17,207 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-07-09 21:05:17,207 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-09 21:05:17,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-07-09 21:05:17,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-07-09 21:05:17,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-07-09 21:05:17,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-07-09 21:05:17,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-07-09 21:05:17,496 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 21:05:17,496 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-09 21:05:17,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-09 21:05:17,497 INFO L82 PathProgramCache]: Analyzing trace with hash 2106231037, now seen corresponding path program 3 times [2021-07-09 21:05:17,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-09 21:05:17,497 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941426343] [2021-07-09 21:05:17,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-09 21:05:17,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-09 21:05:17,666 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 611 proven. 368 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-07-09 21:05:17,666 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-09 21:05:17,666 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941426343] [2021-07-09 21:05:17,666 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941426343] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-09 21:05:17,666 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1346133949] [2021-07-09 21:05:17,666 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 21:05:17,739 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-07-09 21:05:17,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-09 21:05:17,742 WARN L261 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 160 conjunts are in the unsatisfiable core [2021-07-09 21:05:17,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-09 21:05:47,970 WARN L205 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2021-07-09 21:06:19,360 WARN L205 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2021-07-09 21:07:29,796 WARN L227 Executor]: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000) stderr output: (error "out of memory") [2021-07-09 21:07:29,798 WARN L348 FreeRefinementEngine]: Global settings require throwing the following exception [2021-07-09 21:07:29,998 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-09 21:07:29,999 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:241) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:258) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.checkSat(WrapperScript.java:163) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.ManagedScript.checkSat(ManagedScript.java:138) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.MonolithicImplicationChecker.checkImplication(MonolithicImplicationChecker.java:85) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.compare(PredicateUnifier.java:934) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier$PredicateComparison.(PredicateUnifier.java:773) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:345) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:305) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$UnifyPostprocessor.postprocess(TraceCheckSpWp.java:582) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:440) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:201) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:299) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:185) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:163) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:297) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:190) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:180) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:597) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:374) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:69) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:63) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:367) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:293) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:238) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1461) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:654) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:238) ... 46 more [2021-07-09 21:07:30,002 INFO L168 Benchmark]: Toolchain (without parser) took 142007.38 ms. Allocated memory was 199.2 MB in the beginning and 374.3 MB in the end (delta: 175.1 MB). Free memory was 179.6 MB in the beginning and 316.2 MB in the end (delta: -136.6 MB). Peak memory consumption was 39.4 MB. Max. memory is 8.0 GB. [2021-07-09 21:07:30,002 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.10 ms. Allocated memory is still 199.2 MB. Free memory is still 180.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-07-09 21:07:30,002 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.53 ms. Allocated memory is still 199.2 MB. Free memory was 179.6 MB in the beginning and 178.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-07-09 21:07:30,002 INFO L168 Benchmark]: Boogie Preprocessor took 13.99 ms. Allocated memory is still 199.2 MB. Free memory was 178.2 MB in the beginning and 177.3 MB in the end (delta: 898.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-07-09 21:07:30,002 INFO L168 Benchmark]: RCFGBuilder took 209.65 ms. Allocated memory is still 199.2 MB. Free memory was 177.1 MB in the beginning and 164.1 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-07-09 21:07:30,002 INFO L168 Benchmark]: TraceAbstraction took 141760.78 ms. Allocated memory was 199.2 MB in the beginning and 374.3 MB in the end (delta: 175.1 MB). Free memory was 163.7 MB in the beginning and 316.2 MB in the end (delta: -152.5 MB). Peak memory consumption was 23.7 MB. Max. memory is 8.0 GB. [2021-07-09 21:07:30,003 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 0.10 ms. Allocated memory is still 199.2 MB. Free memory is still 180.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 18.53 ms. Allocated memory is still 199.2 MB. Free memory was 179.6 MB in the beginning and 178.2 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 8.0 GB. * Boogie Preprocessor took 13.99 ms. Allocated memory is still 199.2 MB. Free memory was 178.2 MB in the beginning and 177.3 MB in the end (delta: 898.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 209.65 ms. Allocated memory is still 199.2 MB. Free memory was 177.1 MB in the beginning and 164.1 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 141760.78 ms. Allocated memory was 199.2 MB in the beginning and 374.3 MB in the end (delta: 175.1 MB). Free memory was 163.7 MB in the beginning and 316.2 MB in the end (delta: -152.5 MB). Peak memory consumption was 23.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. stderr output: (error "out of memory") : de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:241) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...