/usr/bin/java -Xmx16000000000 -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-DelaySleep-NoLbe-Lockstep.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/min-max-inc-dec.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-b7a4f01caba76767183cf06280be652b0b124764-b7a4f01 [2021-06-07 15:47:25,995 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-06-07 15:47:25,996 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-06-07 15:47:26,017 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-06-07 15:47:26,039 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-DelaySleep-NoLbe-Lockstep.epf [2021-06-07 15:47:26,054 INFO L113 SettingsManager]: Loading preferences was successful [2021-06-07 15:47:26,054 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-06-07 15:47:26,055 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-06-07 15:47:26,055 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-06-07 15:47:26,055 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-06-07 15:47:26,056 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-06-07 15:47:26,056 INFO L138 SettingsManager]: * Use SBE=true [2021-06-07 15:47:26,056 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-06-07 15:47:26,056 INFO L138 SettingsManager]: * sizeof long=4 [2021-06-07 15:47:26,056 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-06-07 15:47:26,056 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-06-07 15:47:26,056 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-06-07 15:47:26,056 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-06-07 15:47:26,056 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-06-07 15:47:26,056 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-06-07 15:47:26,056 INFO L138 SettingsManager]: * sizeof long double=12 [2021-06-07 15:47:26,057 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-06-07 15:47:26,057 INFO L138 SettingsManager]: * Use constant arrays=true [2021-06-07 15:47:26,057 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-06-07 15:47:26,057 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-06-07 15:47:26,057 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-06-07 15:47:26,057 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-06-07 15:47:26,057 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-06-07 15:47:26,057 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-06-07 15:47:26,057 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-06-07 15:47:26,057 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-06-07 15:47:26,057 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-06-07 15:47:26,058 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-06-07 15:47:26,058 INFO L138 SettingsManager]: * DFS Order used in POR=PSEUDO_LOCKSTEP [2021-06-07 15:47:26,058 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-06-07 15:47:26,058 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-06-07 15:47:26,058 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-06-07 15:47:26,058 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-06-07 15:47:26,058 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_DELAY_SET [2021-06-07 15:47:26,058 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-06-07 15:47:26,280 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-06-07 15:47:26,298 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-06-07 15:47:26,299 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-06-07 15:47:26,300 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-06-07 15:47:26,301 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-06-07 15:47:26,302 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/min-max-inc-dec.wvr.bpl [2021-06-07 15:47:26,302 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/min-max-inc-dec.wvr.bpl' [2021-06-07 15:47:26,339 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-06-07 15:47:26,340 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-06-07 15:47:26,342 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-06-07 15:47:26,342 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-06-07 15:47:26,342 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-06-07 15:47:26,351 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "min-max-inc-dec.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.06 03:47:26" (1/1) ... [2021-06-07 15:47:26,357 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "min-max-inc-dec.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.06 03:47:26" (1/1) ... [2021-06-07 15:47:26,362 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-06-07 15:47:26,363 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-06-07 15:47:26,363 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-06-07 15:47:26,364 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-06-07 15:47:26,368 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "min-max-inc-dec.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.06 03:47:26" (1/1) ... [2021-06-07 15:47:26,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "min-max-inc-dec.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.06 03:47:26" (1/1) ... [2021-06-07 15:47:26,377 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "min-max-inc-dec.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.06 03:47:26" (1/1) ... [2021-06-07 15:47:26,377 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "min-max-inc-dec.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.06 03:47:26" (1/1) ... [2021-06-07 15:47:26,384 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "min-max-inc-dec.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.06 03:47:26" (1/1) ... [2021-06-07 15:47:26,386 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "min-max-inc-dec.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.06 03:47:26" (1/1) ... [2021-06-07 15:47:26,387 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "min-max-inc-dec.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.06 03:47:26" (1/1) ... [2021-06-07 15:47:26,387 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-06-07 15:47:26,388 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-06-07 15:47:26,388 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-06-07 15:47:26,388 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-06-07 15:47:26,391 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "min-max-inc-dec.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.06 03:47:26" (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 [2021-06-07 15:47:26,445 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-06-07 15:47:26,446 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-06-07 15:47:26,446 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-06-07 15:47:26,447 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-06-07 15:47:26,447 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-06-07 15:47:26,447 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-06-07 15:47:26,447 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-06-07 15:47:26,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-06-07 15:47:26,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-06-07 15:47:26,447 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-06-07 15:47:26,447 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-06-07 15:47:26,447 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-06-07 15:47:26,448 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2021-06-07 15:47:26,448 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-06-07 15:47:26,448 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-06-07 15:47:26,448 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread5 given in one single declaration [2021-06-07 15:47:26,449 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2021-06-07 15:47:26,449 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2021-06-07 15:47:26,449 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-06-07 15:47:26,659 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-06-07 15:47:26,659 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-06-07 15:47:26,660 INFO L202 PluginConnector]: Adding new model min-max-inc-dec.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.06 03:47:26 BoogieIcfgContainer [2021-06-07 15:47:26,661 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-06-07 15:47:26,662 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-06-07 15:47:26,662 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-06-07 15:47:26,664 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-06-07 15:47:26,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "min-max-inc-dec.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.06 03:47:26" (1/2) ... [2021-06-07 15:47:26,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ff382a2 and model type min-max-inc-dec.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.06 03:47:26, skipping insertion in model container [2021-06-07 15:47:26,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "min-max-inc-dec.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.06 03:47:26" (2/2) ... [2021-06-07 15:47:26,665 INFO L111 eAbstractionObserver]: Analyzing ICFG min-max-inc-dec.wvr.bpl [2021-06-07 15:47:26,668 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-06-07 15:47:26,669 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-06-07 15:47:26,669 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-06-07 15:47:26,669 INFO L471 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-06-07 15:47:26,741 INFO L149 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2021-06-07 15:47:26,754 INFO L255 AbstractCegarLoop]: Starting to check reachability of 6 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 [2021-06-07 15:47:26,785 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-06-07 15:47:26,785 INFO L379 AbstractCegarLoop]: Hoare is false [2021-06-07 15:47:26,786 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-06-07 15:47:26,786 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-06-07 15:47:26,786 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-06-07 15:47:26,786 INFO L383 AbstractCegarLoop]: Difference is false [2021-06-07 15:47:26,786 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-06-07 15:47:26,786 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-06-07 15:47:26,873 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-07 15:47:26,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-07 15:47:26,876 INFO L82 PathProgramCache]: Analyzing trace with hash 435843452, now seen corresponding path program 1 times [2021-06-07 15:47:26,881 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-07 15:47:26,881 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897331094] [2021-06-07 15:47:26,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-07 15:47:26,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 15:47:27,014 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-07 15:47:27,015 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-07 15:47:27,015 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897331094] [2021-06-07 15:47:27,015 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897331094] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 15:47:27,015 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736345847] [2021-06-07 15:47:27,015 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 [2021-06-07 15:47:27,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 15:47:27,097 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 5 conjunts are in the unsatisfiable core [2021-06-07 15:47:27,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-07 15:47:27,277 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-07 15:47:27,277 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736345847] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 15:47:27,278 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-07 15:47:27,278 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2021-06-07 15:47:27,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090124575] [2021-06-07 15:47:27,282 INFO L462 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-06-07 15:47:27,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-07 15:47:27,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-06-07 15:47:27,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-06-07 15:47:27,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-07 15:47:27,291 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-07 15:47:27,292 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 6 states have internal predecessors, (50), 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) [2021-06-07 15:47:27,293 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-07 15:47:27,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-07 15:47:27,639 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-06-07 15:47:27,639 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-07 15:47:27,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-07 15:47:27,640 INFO L82 PathProgramCache]: Analyzing trace with hash 934641664, now seen corresponding path program 2 times [2021-06-07 15:47:27,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-07 15:47:27,640 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598826468] [2021-06-07 15:47:27,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-07 15:47:27,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 15:47:27,711 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-06-07 15:47:27,711 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-07 15:47:27,711 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598826468] [2021-06-07 15:47:27,711 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598826468] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 15:47:27,711 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812565638] [2021-06-07 15:47:27,711 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 [2021-06-07 15:47:27,776 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-06-07 15:47:27,776 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-07 15:47:27,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-07 15:47:27,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-07 15:47:27,961 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-06-07 15:47:27,962 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1812565638] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 15:47:27,962 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-07 15:47:27,962 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 11 [2021-06-07 15:47:27,962 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91874108] [2021-06-07 15:47:27,963 INFO L462 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-06-07 15:47:27,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-07 15:47:27,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-06-07 15:47:27,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-06-07 15:47:27,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-07 15:47:27,964 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-07 15:47:27,964 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 11 states have internal predecessors, (76), 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) [2021-06-07 15:47:27,964 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-07 15:47:27,964 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-07 15:47:28,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-07 15:47:28,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-06-07 15:47:28,617 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-07 15:47:28,618 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-07 15:47:28,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-07 15:47:28,618 INFO L82 PathProgramCache]: Analyzing trace with hash 219068600, now seen corresponding path program 3 times [2021-06-07 15:47:28,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-07 15:47:28,619 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346558549] [2021-06-07 15:47:28,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-07 15:47:28,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 15:47:28,715 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-06-07 15:47:28,715 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-07 15:47:28,715 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346558549] [2021-06-07 15:47:28,716 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346558549] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 15:47:28,716 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254437133] [2021-06-07 15:47:28,716 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 [2021-06-07 15:47:28,755 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-06-07 15:47:28,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-07 15:47:28,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 8 conjunts are in the unsatisfiable core [2021-06-07 15:47:28,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-07 15:47:28,819 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-06-07 15:47:28,821 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-06-07 15:47:28,823 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-06-07 15:47:28,824 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-06-07 15:47:28,824 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:3 [2021-06-07 15:47:28,876 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-06-07 15:47:28,877 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [254437133] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 15:47:28,877 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-07 15:47:28,879 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2021-06-07 15:47:28,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918430376] [2021-06-07 15:47:28,880 INFO L462 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-06-07 15:47:28,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-07 15:47:28,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-06-07 15:47:28,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-06-07 15:47:28,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-07 15:47:28,881 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-07 15:47:28,881 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 8 states have internal predecessors, (47), 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) [2021-06-07 15:47:28,882 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-07 15:47:28,882 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 27 states. [2021-06-07 15:47:28,882 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-07 15:47:32,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-07 15:47:32,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-07 15:47:32,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-07 15:47:33,017 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-07 15:47:33,017 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-07 15:47:33,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-07 15:47:33,018 INFO L82 PathProgramCache]: Analyzing trace with hash 1043222780, now seen corresponding path program 4 times [2021-06-07 15:47:33,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-07 15:47:33,018 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461971951] [2021-06-07 15:47:33,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-07 15:47:33,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 15:47:33,084 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 13 proven. 14 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-06-07 15:47:33,084 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-07 15:47:33,084 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461971951] [2021-06-07 15:47:33,084 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461971951] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 15:47:33,084 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636197553] [2021-06-07 15:47:33,084 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 [2021-06-07 15:47:33,128 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-06-07 15:47:33,128 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-07 15:47:33,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-07 15:47:33,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-07 15:47:33,257 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 19 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-06-07 15:47:33,257 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [636197553] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 15:47:33,257 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-07 15:47:33,257 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9] total 16 [2021-06-07 15:47:33,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082078504] [2021-06-07 15:47:33,258 INFO L462 AbstractCegarLoop]: Interpolant automaton has 17 states [2021-06-07 15:47:33,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-07 15:47:33,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-06-07 15:47:33,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2021-06-07 15:47:33,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-07 15:47:33,259 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-07 15:47:33,259 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 17 states, 17 states have (on average 4.705882352941177) internal successors, (80), 16 states have internal predecessors, (80), 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) [2021-06-07 15:47:33,259 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-07 15:47:33,259 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 42 states. [2021-06-07 15:47:33,259 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-06-07 15:47:33,259 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-07 15:47:53,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-07 15:47:53,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-07 15:47:53,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-07 15:47:53,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2021-06-07 15:47:53,488 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-07 15:47:53,489 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-07 15:47:53,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-07 15:47:53,489 INFO L82 PathProgramCache]: Analyzing trace with hash -1641375466, now seen corresponding path program 5 times [2021-06-07 15:47:53,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-07 15:47:53,489 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219315321] [2021-06-07 15:47:53,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-07 15:47:53,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 15:47:53,615 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 32 proven. 47 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-06-07 15:47:53,615 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-07 15:47:53,615 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219315321] [2021-06-07 15:47:53,615 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219315321] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 15:47:53,615 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187739116] [2021-06-07 15:47:53,615 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 [2021-06-07 15:47:53,690 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s) [2021-06-07 15:47:53,690 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-07 15:47:53,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2021-06-07 15:47:53,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-07 15:47:53,888 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 34 proven. 47 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-06-07 15:47:53,888 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1187739116] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 15:47:53,889 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-07 15:47:53,889 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 22 [2021-06-07 15:47:53,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12075621] [2021-06-07 15:47:53,889 INFO L462 AbstractCegarLoop]: Interpolant automaton has 23 states [2021-06-07 15:47:53,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-07 15:47:53,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-06-07 15:47:53,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2021-06-07 15:47:53,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-07 15:47:53,890 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-07 15:47:53,890 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 23 states, 23 states have (on average 4.521739130434782) internal successors, (104), 22 states have internal predecessors, (104), 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) [2021-06-07 15:47:53,890 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-07 15:47:53,890 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 42 states. [2021-06-07 15:47:53,890 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-06-07 15:47:53,890 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 124 states. [2021-06-07 15:47:53,890 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-07 15:47:56,343 WARN L205 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2021-06-07 15:49:31,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-07 15:49:31,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-07 15:49:31,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-07 15:49:31,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2021-06-07 15:49:31,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 266 states. [2021-06-07 15:49:31,724 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-07 15:49:31,725 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-07 15:49:31,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-07 15:49:31,725 INFO L82 PathProgramCache]: Analyzing trace with hash -1851620470, now seen corresponding path program 6 times [2021-06-07 15:49:31,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-07 15:49:31,725 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280569755] [2021-06-07 15:49:31,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-07 15:49:31,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 15:49:31,775 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 34 proven. 13 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-06-07 15:49:31,776 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-07 15:49:31,776 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280569755] [2021-06-07 15:49:31,776 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280569755] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 15:49:31,776 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [727261350] [2021-06-07 15:49:31,776 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE 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 [2021-06-07 15:49:31,821 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2021-06-07 15:49:31,821 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-06-07 15:49:31,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 11 conjunts are in the unsatisfiable core [2021-06-07 15:49:31,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-07 15:49:31,957 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 16 proven. 43 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-06-07 15:49:31,958 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [727261350] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 15:49:31,958 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-07 15:49:31,958 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9] total 14 [2021-06-07 15:49:31,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016291870] [2021-06-07 15:49:31,958 INFO L462 AbstractCegarLoop]: Interpolant automaton has 15 states [2021-06-07 15:49:31,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-07 15:49:31,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-06-07 15:49:31,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-06-07 15:49:31,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-07 15:49:31,959 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-07 15:49:31,959 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 15 states, 15 states have (on average 5.933333333333334) internal successors, (89), 14 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) [2021-06-07 15:49:31,959 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-07 15:49:31,959 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 42 states. [2021-06-07 15:49:31,959 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-06-07 15:49:31,959 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 124 states. [2021-06-07 15:49:31,959 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 266 states. [2021-06-07 15:49:31,959 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-06-07 15:54:04,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-06-07 15:54:04,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-06-07 15:54:04,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-06-07 15:54:04,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2021-06-07 15:54:04,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 266 states. [2021-06-07 15:54:04,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-06-07 15:54:04,601 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-07 15:54:04,602 INFO L430 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr4INUSE_VIOLATION]=== [2021-06-07 15:54:04,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-06-07 15:54:04,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1479915942, now seen corresponding path program 7 times [2021-06-07 15:54:04,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-06-07 15:54:04,602 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770088252] [2021-06-07 15:54:04,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-06-07 15:54:04,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 15:54:04,782 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 33 proven. 42 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-06-07 15:54:04,782 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-06-07 15:54:04,782 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770088252] [2021-06-07 15:54:04,784 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770088252] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 15:54:04,784 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394032442] [2021-06-07 15:54:04,784 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-06-07 15:54:04,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-06-07 15:54:04,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 10 conjunts are in the unsatisfiable core [2021-06-07 15:54:04,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-06-07 15:54:05,033 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 40 proven. 10 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-06-07 15:54:05,033 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [394032442] provided 0 perfect and 1 imperfect interpolant sequences [2021-06-07 15:54:05,033 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-06-07 15:54:05,033 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 9] total 24 [2021-06-07 15:54:05,033 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518794649] [2021-06-07 15:54:05,034 INFO L462 AbstractCegarLoop]: Interpolant automaton has 25 states [2021-06-07 15:54:05,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-06-07 15:54:05,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-06-07 15:54:05,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=511, Unknown=0, NotChecked=0, Total=600 [2021-06-07 15:54:05,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-06-07 15:54:05,034 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-06-07 15:54:05,035 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 25 states, 25 states have (on average 4.04) internal successors, (101), 24 states have internal predecessors, (101), 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) [2021-06-07 15:54:05,035 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-06-07 15:54:05,035 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 42 states. [2021-06-07 15:54:05,035 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 12 states. [2021-06-07 15:54:05,035 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 124 states. [2021-06-07 15:54:05,035 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 266 states. [2021-06-07 15:54:05,035 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 65 states. [2021-06-07 15:54:05,035 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states.