/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleep-NoLbe-Lockstep.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-bad/ring-nondet.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-a47a088281b0b97d17910950432b7c5b5bc3adeb-a47a088 [2021-07-14 06:55:31,843 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-07-14 06:55:31,845 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-07-14 06:55:31,875 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-07-14 06:55:31,909 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-POR-NewStatesSleep-NoLbe-Lockstep.epf [2021-07-14 06:55:31,930 INFO L113 SettingsManager]: Loading preferences was successful [2021-07-14 06:55:31,930 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-07-14 06:55:31,931 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-07-14 06:55:31,931 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-07-14 06:55:31,932 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-07-14 06:55:31,932 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-07-14 06:55:31,932 INFO L138 SettingsManager]: * Use SBE=true [2021-07-14 06:55:31,933 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-07-14 06:55:31,933 INFO L138 SettingsManager]: * sizeof long=4 [2021-07-14 06:55:31,933 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-07-14 06:55:31,933 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-07-14 06:55:31,934 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-07-14 06:55:31,934 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-07-14 06:55:31,934 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-07-14 06:55:31,934 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-07-14 06:55:31,934 INFO L138 SettingsManager]: * sizeof long double=12 [2021-07-14 06:55:31,934 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-07-14 06:55:31,935 INFO L138 SettingsManager]: * Use constant arrays=true [2021-07-14 06:55:31,935 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-07-14 06:55:31,935 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-07-14 06:55:31,935 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-07-14 06:55:31,935 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-07-14 06:55:31,936 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-07-14 06:55:31,936 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-14 06:55:31,936 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-07-14 06:55:31,936 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-07-14 06:55:31,937 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-07-14 06:55:31,945 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-07-14 06:55:31,945 INFO L138 SettingsManager]: * DFS Order used in POR=PSEUDO_LOCKSTEP [2021-07-14 06:55:31,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-07-14 06:55:31,945 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-07-14 06:55:31,945 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-07-14 06:55:31,946 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-07-14 06:55:31,946 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2021-07-14 06:55:31,946 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-07-14 06:55:32,230 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-07-14 06:55:32,249 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-07-14 06:55:32,252 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-07-14 06:55:32,253 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-07-14 06:55:32,254 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-07-14 06:55:32,254 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-bad/ring-nondet.wvr.bpl [2021-07-14 06:55:32,254 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-bad/ring-nondet.wvr.bpl' [2021-07-14 06:55:32,281 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-07-14 06:55:32,282 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-07-14 06:55:32,283 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-07-14 06:55:32,283 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-07-14 06:55:32,283 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-07-14 06:55:32,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 06:55:32" (1/1) ... [2021-07-14 06:55:32,299 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 06:55:32" (1/1) ... [2021-07-14 06:55:32,306 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-07-14 06:55:32,307 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-07-14 06:55:32,307 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-07-14 06:55:32,307 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-07-14 06:55:32,314 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 06:55:32" (1/1) ... [2021-07-14 06:55:32,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 06:55:32" (1/1) ... [2021-07-14 06:55:32,316 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 06:55:32" (1/1) ... [2021-07-14 06:55:32,316 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 06:55:32" (1/1) ... [2021-07-14 06:55:32,319 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 06:55:32" (1/1) ... [2021-07-14 06:55:32,322 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 06:55:32" (1/1) ... [2021-07-14 06:55:32,323 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 06:55:32" (1/1) ... [2021-07-14 06:55:32,324 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-07-14 06:55:32,325 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-07-14 06:55:32,325 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-07-14 06:55:32,325 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-07-14 06:55:32,326 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 06:55:32" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-07-14 06:55:32,393 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-07-14 06:55:32,393 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-07-14 06:55:32,393 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-07-14 06:55:32,394 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-07-14 06:55:32,394 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-07-14 06:55:32,394 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-07-14 06:55:32,395 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-07-14 06:55:32,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-07-14 06:55:32,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-07-14 06:55:32,396 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2021-07-14 06:55:32,396 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-07-14 06:55:32,396 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-07-14 06:55:32,397 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-07-14 06:55:32,652 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-07-14 06:55:32,652 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-07-14 06:55:32,654 INFO L202 PluginConnector]: Adding new model ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 06:55:32 BoogieIcfgContainer [2021-07-14 06:55:32,654 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-07-14 06:55:32,656 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-07-14 06:55:32,656 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-07-14 06:55:32,658 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-07-14 06:55:32,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 14.07 06:55:32" (1/2) ... [2021-07-14 06:55:32,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5714a7f5 and model type ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.07 06:55:32, skipping insertion in model container [2021-07-14 06:55:32,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "ring-nondet.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.07 06:55:32" (2/2) ... [2021-07-14 06:55:32,661 INFO L111 eAbstractionObserver]: Analyzing ICFG ring-nondet.wvr.bpl [2021-07-14 06:55:32,666 WARN L148 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-07-14 06:55:32,666 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-07-14 06:55:32,666 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-07-14 06:55:32,667 INFO L474 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-07-14 06:55:32,704 INFO L149 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-07-14 06:55:32,739 INFO L255 AbstractCegarLoop]: Starting to check reachability of 4 error locations. No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-07-14 06:55:32,806 INFO L378 AbstractCegarLoop]: Interprodecural is true [2021-07-14 06:55:32,807 INFO L379 AbstractCegarLoop]: Hoare is false [2021-07-14 06:55:32,807 INFO L380 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-07-14 06:55:32,807 INFO L381 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-07-14 06:55:32,807 INFO L382 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-07-14 06:55:32,807 INFO L383 AbstractCegarLoop]: Difference is false [2021-07-14 06:55:32,807 INFO L384 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-07-14 06:55:32,807 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == ULTIMATE.start======== [2021-07-14 06:55:32,964 INFO L430 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 06:55:32,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 06:55:32,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1067803992, now seen corresponding path program 1 times [2021-07-14 06:55:32,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 06:55:32,976 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364374518] [2021-07-14 06:55:32,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 06:55:33,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 06:55:33,280 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 06:55:33,280 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 06:55:33,281 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364374518] [2021-07-14 06:55:33,281 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364374518] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 06:55:33,281 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [359359006] [2021-07-14 06:55:33,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 06:55:33,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 06:55:33,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 7 conjunts are in the unsatisfiable core [2021-07-14 06:55:33,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 06:55:33,632 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-07-14 06:55:33,633 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [359359006] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 06:55:33,633 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 06:55:33,633 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 3] total 10 [2021-07-14 06:55:33,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495634805] [2021-07-14 06:55:33,638 INFO L462 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-07-14 06:55:33,638 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 06:55:33,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-07-14 06:55:33,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-07-14 06:55:33,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 06:55:33,652 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 06:55:33,654 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 10 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 06:55:33,655 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 06:55:33,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-14 06:55:34,201 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-07-14 06:55:34,202 INFO L430 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 06:55:34,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 06:55:34,203 INFO L82 PathProgramCache]: Analyzing trace with hash 271805250, now seen corresponding path program 2 times [2021-07-14 06:55:34,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 06:55:34,203 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594386458] [2021-07-14 06:55:34,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 06:55:34,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 06:55:35,222 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 0 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-07-14 06:55:35,222 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 06:55:35,222 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594386458] [2021-07-14 06:55:35,223 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594386458] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 06:55:35,223 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052797213] [2021-07-14 06:55:35,223 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 06:55:35,299 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-07-14 06:55:35,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 06:55:35,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 27 conjunts are in the unsatisfiable core [2021-07-14 06:55:35,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 06:55:35,888 INFO L354 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2021-07-14 06:55:35,888 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 13 [2021-07-14 06:55:35,891 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-14 06:55:35,894 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 06:55:35,895 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-14 06:55:35,895 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:7 [2021-07-14 06:55:35,954 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-07-14 06:55:35,957 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-14 06:55:35,959 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 06:55:35,959 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-14 06:55:35,959 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:11, output treesize:3 [2021-07-14 06:55:36,043 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 13 proven. 73 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-07-14 06:55:36,044 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1052797213] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 06:55:36,044 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 06:55:36,044 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 15] total 36 [2021-07-14 06:55:36,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361669173] [2021-07-14 06:55:36,045 INFO L462 AbstractCegarLoop]: Interpolant automaton has 37 states [2021-07-14 06:55:36,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 06:55:36,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-07-14 06:55:36,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=196, Invalid=1136, Unknown=0, NotChecked=0, Total=1332 [2021-07-14 06:55:36,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 06:55:36,048 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 06:55:36,048 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 37 states, 37 states have (on average 3.324324324324324) internal successors, (123), 36 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 06:55:36,048 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-07-14 06:55:36,049 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 06:55:36,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-14 06:55:36,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-07-14 06:55:37,095 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 06:55:37,095 INFO L430 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 06:55:37,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 06:55:37,096 INFO L82 PathProgramCache]: Analyzing trace with hash 1442521926, now seen corresponding path program 3 times [2021-07-14 06:55:37,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 06:55:37,096 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822278179] [2021-07-14 06:55:37,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 06:55:37,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 06:55:37,218 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-07-14 06:55:37,219 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 06:55:37,219 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822278179] [2021-07-14 06:55:37,219 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822278179] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 06:55:37,219 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571945214] [2021-07-14 06:55:37,219 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 06:55:37,280 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-07-14 06:55:37,280 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 06:55:37,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 24 conjunts are in the unsatisfiable core [2021-07-14 06:55:37,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 06:55:37,414 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-07-14 06:55:37,414 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 10 [2021-07-14 06:55:37,416 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-14 06:55:37,419 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 06:55:37,419 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-14 06:55:37,419 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:7 [2021-07-14 06:55:37,459 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 15 treesize of output 7 [2021-07-14 06:55:37,461 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-07-14 06:55:37,462 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-07-14 06:55:37,462 INFO L550 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-07-14 06:55:37,463 INFO L247 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:3 [2021-07-14 06:55:37,505 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 21 proven. 32 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-07-14 06:55:37,505 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571945214] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 06:55:37,505 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 06:55:37,505 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10] total 15 [2021-07-14 06:55:37,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152521030] [2021-07-14 06:55:37,506 INFO L462 AbstractCegarLoop]: Interpolant automaton has 16 states [2021-07-14 06:55:37,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 06:55:37,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-07-14 06:55:37,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2021-07-14 06:55:37,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 06:55:37,507 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 06:55:37,507 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 16 states, 16 states have (on average 5.0625) internal successors, (81), 15 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 06:55:37,507 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-07-14 06:55:37,507 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 20 states. [2021-07-14 06:55:37,508 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 06:55:38,722 WARN L205 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 42 [2021-07-14 06:55:39,167 WARN L205 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2021-07-14 06:55:39,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-14 06:55:39,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-07-14 06:55:39,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-07-14 06:55:39,448 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 06:55:39,448 INFO L430 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 06:55:39,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 06:55:39,449 INFO L82 PathProgramCache]: Analyzing trace with hash 812801934, now seen corresponding path program 4 times [2021-07-14 06:55:39,449 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 06:55:39,449 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065859520] [2021-07-14 06:55:39,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 06:55:39,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 06:55:39,557 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 104 proven. 145 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2021-07-14 06:55:39,557 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 06:55:39,558 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065859520] [2021-07-14 06:55:39,558 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065859520] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 06:55:39,558 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286386626] [2021-07-14 06:55:39,558 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 [2021-07-14 06:55:39,651 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-07-14 06:55:39,651 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 06:55:39,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 14 conjunts are in the unsatisfiable core [2021-07-14 06:55:39,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 06:55:39,840 INFO L134 CoverageAnalysis]: Checked inductivity of 362 backedges. 104 proven. 78 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2021-07-14 06:55:39,840 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [286386626] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 06:55:39,840 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 06:55:39,840 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 5 [2021-07-14 06:55:39,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156120020] [2021-07-14 06:55:39,841 INFO L462 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-07-14 06:55:39,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 06:55:39,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-07-14 06:55:39,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-07-14 06:55:39,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 06:55:39,842 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 06:55:39,842 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 5 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 06:55:39,842 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-07-14 06:55:39,842 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 31 states. [2021-07-14 06:55:39,842 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 37 states. [2021-07-14 06:55:39,842 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 06:55:40,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-14 06:55:40,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-07-14 06:55:40,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-07-14 06:55:40,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 06:55:40,432 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 06:55:40,433 INFO L430 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 06:55:40,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 06:55:40,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1673288646, now seen corresponding path program 5 times [2021-07-14 06:55:40,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 06:55:40,434 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763967944] [2021-07-14 06:55:40,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 06:55:40,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-07-14 06:55:41,072 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 84 proven. 266 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-07-14 06:55:41,072 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-07-14 06:55:41,072 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763967944] [2021-07-14 06:55:41,072 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763967944] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 06:55:41,072 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731732388] [2021-07-14 06:55:41,073 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 [2021-07-14 06:55:41,187 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 14 check-sat command(s) [2021-07-14 06:55:41,188 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-07-14 06:55:41,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 33 conjunts are in the unsatisfiable core [2021-07-14 06:55:41,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-07-14 06:55:42,017 WARN L205 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2021-07-14 06:55:42,276 WARN L205 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 77 [2021-07-14 06:55:42,696 WARN L205 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 91 [2021-07-14 06:55:43,110 WARN L205 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 101 [2021-07-14 06:55:43,556 WARN L205 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2021-07-14 06:55:43,999 WARN L205 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 114 [2021-07-14 06:55:44,515 WARN L205 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 124 [2021-07-14 06:55:45,030 WARN L205 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2021-07-14 06:55:46,969 WARN L205 SmtUtils]: Spent 475.00 ms on a formula simplification. DAG size of input: 252 DAG size of output: 167 [2021-07-14 06:55:47,479 INFO L134 CoverageAnalysis]: Checked inductivity of 358 backedges. 2 proven. 354 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-07-14 06:55:47,480 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731732388] provided 0 perfect and 1 imperfect interpolant sequences [2021-07-14 06:55:47,480 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-07-14 06:55:47,480 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 26] total 43 [2021-07-14 06:55:47,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102499871] [2021-07-14 06:55:47,482 INFO L462 AbstractCegarLoop]: Interpolant automaton has 44 states [2021-07-14 06:55:47,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-07-14 06:55:47,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2021-07-14 06:55:47,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=1714, Unknown=0, NotChecked=0, Total=1892 [2021-07-14 06:55:47,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-07-14 06:55:47,484 INFO L482 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-07-14 06:55:47,484 INFO L483 AbstractCegarLoop]: Interpolant automaton has has 44 states, 44 states have (on average 4.386363636363637) internal successors, (193), 43 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-07-14 06:55:47,484 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 10 states. [2021-07-14 06:55:47,484 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 32 states. [2021-07-14 06:55:47,484 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 37 states. [2021-07-14 06:55:47,484 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-07-14 06:55:47,484 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-07-14 06:55:49,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-07-14 06:55:49,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-07-14 06:55:49,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-07-14 06:55:49,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-07-14 06:55:49,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-07-14 06:55:49,496 WARN L519 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-07-14 06:55:49,496 INFO L430 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]=== [2021-07-14 06:55:49,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-07-14 06:55:49,497 INFO L82 PathProgramCache]: Analyzing trace with hash -220759399, now seen corresponding path program 6 times [2021-07-14 06:55:49,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-07-14 06:55:49,497 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155343527] [2021-07-14 06:55:49,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-07-14 06:55:51,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown