/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-NewStatesSleepPersistentFixedOrder-NoLbe-Lockstep.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/bench/exp2x4.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-9bbddad6b14272d9691b7fb6f1c011d15ab18596-9bbddad [2021-06-14 20:39:28,997 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-14 20:39:28,998 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-14 20:39:29,015 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-06-14 20:39:29,015 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-06-14 20:39:29,016 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-06-14 20:39:29,017 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-06-14 20:39:29,019 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-06-14 20:39:29,020 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-06-14 20:39:29,020 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-06-14 20:39:29,021 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-06-14 20:39:29,022 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-06-14 20:39:29,022 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-06-14 20:39:29,023 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-06-14 20:39:29,023 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-06-14 20:39:29,024 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-06-14 20:39:29,025 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-06-14 20:39:29,025 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-06-14 20:39:29,026 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-06-14 20:39:29,027 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-06-14 20:39:29,028 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-06-14 20:39:29,029 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-06-14 20:39:29,030 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-06-14 20:39:29,030 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-06-14 20:39:29,032 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-06-14 20:39:29,039 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-NewStatesSleepPersistentFixedOrder-NoLbe-Lockstep.epf [2021-06-14 20:39:29,054 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-14 20:39:29,054 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-14 20:39:29,054 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-14 20:39:29,054 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-14 20:39:29,055 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-14 20:39:29,055 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-14 20:39:29,055 INFO L138 SettingsManager]: * Use SBE=true [2021-06-14 20:39:29,056 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-14 20:39:29,056 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-14 20:39:29,056 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-14 20:39:29,056 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-14 20:39:29,056 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-14 20:39:29,056 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-14 20:39:29,056 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-14 20:39:29,056 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-14 20:39:29,057 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-14 20:39:29,057 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-14 20:39:29,057 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-14 20:39:29,057 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-14 20:39:29,057 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-14 20:39:29,057 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-14 20:39:29,057 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-14 20:39:29,057 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-14 20:39:29,057 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-14 20:39:29,058 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-14 20:39:29,058 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-14 20:39:29,058 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-14 20:39:29,058 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-14 20:39:29,058 INFO L138 SettingsManager]: * DFS Order used in POR=PSEUDO_LOCKSTEP [2021-06-14 20:39:29,058 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-14 20:39:29,058 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-14 20:39:29,058 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-14 20:39:29,059 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-14 20:39:29,059 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=PERSISTENT_SLEEP_NEW_STATES_FIXEDORDER [2021-06-14 20:39:29,059 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-14 20:39:29,308 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-14 20:39:29,332 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-14 20:39:29,334 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-14 20:39:29,335 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-14 20:39:29,341 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-14 20:39:29,341 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/bench/exp2x4.wvr.bpl [2021-06-14 20:39:29,342 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/bench/exp2x4.wvr.bpl' [2021-06-14 20:39:29,356 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-14 20:39:29,358 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-14 20:39:29,358 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-14 20:39:29,358 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-14 20:39:29,359 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-14 20:39:29,366 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "exp2x4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 08:39:29" (1/1) ... [2021-06-14 20:39:29,371 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "exp2x4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 08:39:29" (1/1) ... [2021-06-14 20:39:29,376 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-14 20:39:29,376 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-14 20:39:29,377 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-14 20:39:29,377 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-14 20:39:29,382 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "exp2x4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 08:39:29" (1/1) ... [2021-06-14 20:39:29,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "exp2x4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 08:39:29" (1/1) ... [2021-06-14 20:39:29,382 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "exp2x4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 08:39:29" (1/1) ... [2021-06-14 20:39:29,383 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "exp2x4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 08:39:29" (1/1) ... [2021-06-14 20:39:29,384 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "exp2x4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 08:39:29" (1/1) ... [2021-06-14 20:39:29,386 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "exp2x4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 08:39:29" (1/1) ... [2021-06-14 20:39:29,387 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "exp2x4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 08:39:29" (1/1) ... [2021-06-14 20:39:29,387 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-14 20:39:29,388 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-14 20:39:29,388 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-14 20:39:29,388 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-14 20:39:29,389 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "exp2x4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 08:39:29" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-14 20:39:29,441 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-14 20:39:29,442 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-14 20:39:29,442 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-14 20:39:29,442 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-14 20:39:29,442 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-14 20:39:29,442 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-14 20:39:29,442 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-14 20:39:29,442 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-14 20:39:29,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-14 20:39:29,443 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-14 20:39:29,443 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-14 20:39:29,443 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-14 20:39:29,443 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-06-14 20:39:29,443 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-06-14 20:39:29,443 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-06-14 20:39:29,444 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-14 20:39:29,640 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-14 20:39:29,640 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-14 20:39:29,642 INFO L202 PluginConnector]: Adding new model exp2x4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 08:39:29 BoogieIcfgContainer [2021-06-14 20:39:29,642 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-14 20:39:29,643 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-14 20:39:29,643 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-14 20:39:29,645 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-14 20:39:29,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "exp2x4.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.06 08:39:29" (1/2) ... [2021-06-14 20:39:29,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76593943 and model type exp2x4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.06 08:39:29, skipping insertion in model container [2021-06-14 20:39:29,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "exp2x4.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.06 08:39:29" (2/2) ... [2021-06-14 20:39:29,646 INFO L111 eAbstractionObserver]: Analyzing ICFG exp2x4.wvr.bpl [2021-06-14 20:39:29,661 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-14 20:39:29,661 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-14 20:39:29,662 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-14 20:39:29,662 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-14 20:39:29,705 INFO L149 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2021-06-14 20:39:29,719 INFO L255 AbstractCegarLoop]: Starting to check reachability of 5 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-06-14 20:39:29,755 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-14 20:39:29,755 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-14 20:39:29,755 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-14 20:39:29,756 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-14 20:39:29,756 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-14 20:39:29,756 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-14 20:39:29,756 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-14 20:39:29,756 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-14 20:39:29,880 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 20:39:29,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 20:39:29,884 INFO L82 PathProgramCache]: Analyzing trace with hash -17559550, now seen corresponding path program 1 times [2021-06-14 20:39:29,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 20:39:29,889 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079863757] [2021-06-14 20:39:29,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 20:39:29,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 20:39:30,133 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 14 proven. 42 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-14 20:39:30,134 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 20:39:30,134 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079863757] [2021-06-14 20:39:30,135 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079863757] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 20:39:30,135 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169021479] [2021-06-14 20:39:30,135 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 [2021-06-14 20:39:30,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 20:39:30,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 7 conjunts are in the unsatisfiable core [2021-06-14 20:39:30,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-14 20:39:30,564 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 33 proven. 9 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-06-14 20:39:30,564 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [169021479] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 20:39:30,564 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-14 20:39:30,565 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7] total 17 [2021-06-14 20:39:30,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398210401] [2021-06-14 20:39:30,568 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-14 20:39:30,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 20:39:30,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-14 20:39:30,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2021-06-14 20:39:30,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 20:39:30,578 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 20:39:30,579 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 4.944444444444445) internal successors, (89), 17 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-14 20:39:30,579 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 20:39:31,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-14 20:39:31,249 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-06-14 20:39:31,249 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 20:39:31,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 20:39:31,250 INFO L82 PathProgramCache]: Analyzing trace with hash 1039928123, now seen corresponding path program 2 times [2021-06-14 20:39:31,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 20:39:31,250 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638626701] [2021-06-14 20:39:31,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 20:39:31,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 20:39:31,313 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 31 proven. 9 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-06-14 20:39:31,314 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 20:39:31,314 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638626701] [2021-06-14 20:39:31,314 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638626701] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 20:39:31,314 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115178967] [2021-06-14 20:39:31,314 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 [2021-06-14 20:39:31,358 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-14 20:39:31,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-14 20:39:31,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-14 20:39:31,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-14 20:39:31,625 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 37 proven. 9 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-06-14 20:39:31,625 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115178967] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 20:39:31,625 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-14 20:39:31,625 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 11] total 13 [2021-06-14 20:39:31,626 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084324222] [2021-06-14 20:39:31,626 INFO L462 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-06-14 20:39:31,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 20:39:31,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-06-14 20:39:31,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-06-14 20:39:31,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 20:39:31,630 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 20:39:31,630 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 14 states, 14 states have (on average 4.642857142857143) internal successors, (65), 13 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-14 20:39:31,630 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-14 20:39:31,630 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 20:39:32,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-06-14 20:39:32,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-14 20:39:32,424 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 20:39:32,425 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 20:39:32,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 20:39:32,425 INFO L82 PathProgramCache]: Analyzing trace with hash -1560384864, now seen corresponding path program 3 times [2021-06-14 20:39:32,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 20:39:32,426 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848537253] [2021-06-14 20:39:32,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 20:39:32,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 20:39:32,569 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 21 proven. 87 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-14 20:39:32,569 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 20:39:32,569 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848537253] [2021-06-14 20:39:32,569 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848537253] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 20:39:32,569 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118151049] [2021-06-14 20:39:32,570 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 [2021-06-14 20:39:32,605 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-06-14 20:39:32,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-14 20:39:32,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 22 conjunts are in the unsatisfiable core [2021-06-14 20:39:32,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-14 20:39:33,656 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 48 proven. 54 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-06-14 20:39:33,657 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118151049] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 20:39:33,657 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-14 20:39:33,657 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 20] total 34 [2021-06-14 20:39:33,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760222447] [2021-06-14 20:39:33,658 INFO L462 AbstractCegarLoop]: Interpolant automaton has 35 states [2021-06-14 20:39:33,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 20:39:33,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-06-14 20:39:33,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=1098, Unknown=0, NotChecked=0, Total=1190 [2021-06-14 20:39:33,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 20:39:33,660 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 20:39:33,662 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 35 states, 35 states have (on average 3.4285714285714284) internal successors, (120), 34 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-14 20:39:33,662 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 13 states. [2021-06-14 20:39:33,662 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2021-06-14 20:39:33,662 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 20:39:35,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-14 20:39:35,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-14 20:39:35,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-14 20:39:35,416 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 20:39:35,416 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 20:39:35,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 20:39:35,417 INFO L82 PathProgramCache]: Analyzing trace with hash -271379633, now seen corresponding path program 4 times [2021-06-14 20:39:35,417 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 20:39:35,417 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422441747] [2021-06-14 20:39:35,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 20:39:35,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 20:39:35,467 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 52 proven. 12 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-06-14 20:39:35,467 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 20:39:35,467 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422441747] [2021-06-14 20:39:35,467 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422441747] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 20:39:35,467 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546705482] [2021-06-14 20:39:35,467 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 20:39:35,524 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-14 20:39:35,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-14 20:39:35,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 15 conjunts are in the unsatisfiable core [2021-06-14 20:39:35,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-14 20:39:35,869 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 76 proven. 12 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-06-14 20:39:35,869 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546705482] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 20:39:35,869 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-14 20:39:35,869 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 15] total 17 [2021-06-14 20:39:35,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427598911] [2021-06-14 20:39:35,870 INFO L462 AbstractCegarLoop]: Interpolant automaton has 18 states [2021-06-14 20:39:35,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-14 20:39:35,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-06-14 20:39:35,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2021-06-14 20:39:35,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-14 20:39:35,871 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-14 20:39:35,871 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 18 states, 18 states have (on average 4.277777777777778) internal successors, (77), 17 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-06-14 20:39:35,871 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 14 states. [2021-06-14 20:39:35,871 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 26 states. [2021-06-14 20:39:35,871 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 22 states. [2021-06-14 20:39:35,871 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-14 20:39:36,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-06-14 20:39:36,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-14 20:39:36,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-06-14 20:39:36,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-06-14 20:39:36,620 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 20:39:36,621 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-06-14 20:39:36,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-14 20:39:36,621 INFO L82 PathProgramCache]: Analyzing trace with hash 872519639, now seen corresponding path program 5 times [2021-06-14 20:39:36,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-14 20:39:36,621 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069216596] [2021-06-14 20:39:36,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-14 20:39:36,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-14 20:39:36,847 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-06-14 20:39:36,847 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-14 20:39:36,847 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069216596] [2021-06-14 20:39:36,847 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069216596] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-14 20:39:36,848 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288441802] [2021-06-14 20:39:36,848 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_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 [2021-06-14 20:39:36,897 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-06-14 20:39:36,897 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-14 20:39:36,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 61 conjunts are in the unsatisfiable core [2021-06-14 20:39:36,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-14 20:39:42,301 WARN L205 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2021-06-14 20:39:42,965 WARN L205 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 131 [2021-06-14 20:39:44,240 WARN L205 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 141 [2021-06-14 20:39:45,332 WARN L205 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 144 [2021-06-14 20:39:45,374 WARN L348 FreeRefinementEngine]: Global settings require throwing the following exception [2021-06-14 20:39:45,588 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-14 20:39:45,589 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Possible infinite loop detected aux_div_aux_div_x2_10_89 already exists at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.SolveForSubjectUtils.tryToHandleDivModSubterm(SolveForSubjectUtils.java:198) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.SolveForSubjectUtils.findTreatableDivModSubterm(SolveForSubjectUtils.java:585) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.SolveForSubjectUtils.findTreatableDivModSubterm(SolveForSubjectUtils.java:573) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.SolveForSubjectUtils.solveForSubject(SolveForSubjectUtils.java:76) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.PolynomialRelation.solveForSubject(PolynomialRelation.java:451) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.SolveForSubjectUtils.tryToHandleDivModSubterm(SolveForSubjectUtils.java:212) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.SolveForSubjectUtils.findTreatableDivModSubterm(SolveForSubjectUtils.java:585) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.SolveForSubjectUtils.findTreatableDivModSubterm(SolveForSubjectUtils.java:573) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.SolveForSubjectUtils.solveForSubject(SolveForSubjectUtils.java:76) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.PolynomialRelation.solveForSubject(PolynomialRelation.java:451) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionDer$DerHelperMcsbr.solveForSubject(DualJunctionDer.java:408) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionDer$DerHelperMcsbr.solveForSubject(DualJunctionDer.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionDer$IDerHelper.findBestReplacementSbr(DualJunctionDer.java:312) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionDer$IDerHelper.tryToEliminateSbr(DualJunctionDer.java:328) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionDer.tryToEliminateOne(DualJunctionDer.java:231) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionDer.tryExhaustivelyToEliminate(DualJunctionDer.java:198) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionDer.tryToEliminateOne(DualJunctionDer.java:182) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionDer.tryExhaustivelyToEliminate(DualJunctionDer.java:149) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionDer.tryToEliminate(DualJunctionDer.java:127) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:869) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:835) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:753) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective2(QuantifierPusher.java:384) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:316) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.convert(QuantifierPusher.java:227) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.cacheConvert(TermTransformer.java:131) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer$Convert.walk(TermTransformer.java:79) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.transform(TermTransformer.java:272) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.eliminate(QuantifierPusher.java:144) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.eliminate(QuantifierPusher.java:166) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp$LiveVariablesPostprocessorForward.postprocess(TraceCheckSpWp.java:539) 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:561) 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:364) 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) [2021-06-14 20:39:45,593 INFO L168 Benchmark]: Toolchain (without parser) took 16235.94 ms. Allocated memory was 185.6 MB in the beginning and 331.4 MB in the end (delta: 145.8 MB). Free memory was 164.6 MB in the beginning and 146.3 MB in the end (delta: 18.2 MB). Peak memory consumption was 164.5 MB. Max. memory is 8.0 GB. [2021-06-14 20:39:45,594 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.12 ms. Allocated memory is still 185.6 MB. Free memory is still 165.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-06-14 20:39:45,594 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.48 ms. Allocated memory is still 185.6 MB. Free memory was 164.5 MB in the beginning and 163.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-14 20:39:45,594 INFO L168 Benchmark]: Boogie Preprocessor took 11.09 ms. Allocated memory is still 185.6 MB. Free memory was 163.0 MB in the beginning and 162.0 MB in the end (delta: 997.7 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-06-14 20:39:45,594 INFO L168 Benchmark]: RCFGBuilder took 253.55 ms. Allocated memory is still 185.6 MB. Free memory was 162.0 MB in the beginning and 150.4 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-06-14 20:39:45,594 INFO L168 Benchmark]: TraceAbstraction took 15950.18 ms. Allocated memory was 185.6 MB in the beginning and 331.4 MB in the end (delta: 145.8 MB). Free memory was 150.0 MB in the beginning and 146.3 MB in the end (delta: 3.7 MB). Peak memory consumption was 149.9 MB. Max. memory is 8.0 GB. [2021-06-14 20:39:45,594 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 185.6 MB. Free memory is still 165.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 17.48 ms. Allocated memory is still 185.6 MB. Free memory was 164.5 MB in the beginning and 163.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 11.09 ms. Allocated memory is still 185.6 MB. Free memory was 163.0 MB in the beginning and 162.0 MB in the end (delta: 997.7 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 253.55 ms. Allocated memory is still 185.6 MB. Free memory was 162.0 MB in the beginning and 150.4 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 15950.18 ms. Allocated memory was 185.6 MB in the beginning and 331.4 MB in the end (delta: 145.8 MB). Free memory was 150.0 MB in the beginning and 146.3 MB in the end (delta: 3.7 MB). Peak memory consumption was 149.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: Possible infinite loop detected aux_div_aux_div_x2_10_89 already exists de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Possible infinite loop detected aux_div_aux_div_x2_10_89 already exists: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.polynomials.SolveForSubjectUtils.tryToHandleDivModSubterm(SolveForSubjectUtils.java:198) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...